Abstract: There is provided an alloy with ultrafine crystal grains excellent in corrosion resistance, at least 50% of the alloy structure being occupied by ultrafine crystal grains, the alloy having a surface layer containing hydroxide components in a total proportion of 65% or more based on oxide components.

Abstract: An electromagnetic steel sheet having a corrosion-resistant electrically insulating film. The insulating film is formed by spraying and baking, on the steel sheet, a treating liquid containing an emulsion of fine resin particles, a reducing agent and an accelerator. The emulsion of fine resin particles exhibits a weight change peak temperature of not lower than about 400.degree. C. as measured by differential thermal weight measurement conducted while raising the emulsion temperature at a constant rate of temperature rise. The emulsion also substantially resists when contacted by phosphoric acid. The reducing agent is a phosphate ion aqueous solution containing a metal. Also disclosed is a corrosion-resistant core made from the electromagnetic steel sheet.

Abstract: A soft magnetic alloy thin film includes a fine crystalline phase and an amorphous phase. The fine crystalline phase includes an average crystalline grain size of 10 nm or less in diameter and has body-centered cubic structure mainly composed of Fe. The amorphous phase has a nitrogen (N) compound as the main composition and occupies at least 50% of the structure of the thin film. An element M is incorporated at least in the amorphous phase, and includes at least one element selected from the group consisting of Ti, Zr, Hf, V, Nb, Ta, W, and rare earth metal elements. A plane-type magnetic device is made using this thin film.

Abstract: Methods for preparing magnetic strips are provided in which the strips are manufactured to a thickness of less than about 0.005 inches and are made of a ferrous alloy having a carbon content of from about 0.4 to about 1.2 weight percent. The strips can be prepared by first manufacturing an alloy having a carbon content below about 0.5 weight percent to the desired thickness and then subjecting the strip to a carburizing step to raise the carbon content in the strip. The strips can also be prepared by controlling the chemistry of the initial alloy and controlling the processing of that alloy until the desired thickness and requisite magnetic properties are obtained. The strips are particularly useful in EAS systems.

Abstract: A noise filter includes an annular magnetic core made of a soft magnetic alloy ribbon mainly made of Fe and containing B and at least one element selected from a group consisting of Ti, Zr, Hf, Nb, Ta, Mo and W, at least 50% of the soft magnetic alloy structure being composed of body-centered cubic structured fine grains having an average grain size of 30 nm or below, a casing for accommodating the magnetic core and having an insulating plate, a pair of coils separated from each other by the insulating plate, and an electronic circuit for connecting a core element made up of the magnetic core, the casing and the coils.

Abstract: Methods for preparing magnetic strips are provided in which the strips are manufactured to a thickness of less than about 0.003 inches and are made of a ferrous alloy having a carbon content of from about 0.4 to about 1.2 weight percent. The strips are prepared by first manufacturing an alloy having a carbon content below about 0.5 weight percent to the desired thickness and then subjecting the strip to a carburizing step to raise the carbon content in the strip.

Abstract: There is provided an accicular ferromagnetic metal powder with which one can produce magnetic media for high-density recording that are improved in storage stability and magnetic characteristics.The improved ferromagnetic metal powder essentially consists of iron and 50 atm % based on the amount of iron of cobalt and at least one of aluminum and yttrium or any other rare earth element and contains no more than 0.05 wt % of an element of Group Ia of the periodic table (Li, Na, K). The amount of aluminum is in the range of 0.1-30 atm %, the amount of yttrium or any other rare earth element is in the range of and 0.1-10 atm %, each being based on the total quantity of the metal elements present. In either of these cases, the residue of an element of Group IIa of the periodic table (Mg, Ca, Sr, Ba) is preferably 0.1 wt % or less.

Abstract: There is provided according to the present invention a magnetic alloy with ultrafine crystal grains having a composition represented by the general formula:Fe.sub.100-x-y M.sub.x B.sub.y (atomic %)wherein M represents at least one element selected from Ti, Zr, Hf, V, Nb, Mo, Ta, Cr, W and Mn, 4.ltoreq.x.ltoreq.15, 2.ltoreq.y.ltoreq.25, and 7.ltoreq.x+y.ltoreq.35, at least 50% of the alloy structure being occupied by crystal grains having an average grain size of 500 .ANG. or less, and the crystal grains being based on a bcc structure. It may further contain X (Si, Ge, P, Ga, etc.) and/or T (Au, Co, Ni, etc.). This magnetic alloy has an excellent saturation magnetic flux density, permeability and heat resistance.

Abstract: A compression molded soft magnetic core comprising annealed soft ferromagnetic metal particles bonded together in a thermoplastic polymer matrix having a heat deflection temperature greater than about 400.degree. C. and selected from the group consisting of polybenzimidazole and polyimides.

Abstract: There is provided a metallic magnetic powder with which one can produce magnetic media for high-density recording that are improved in storage stability and magnetic characteristics.The improved ferromagnetic metal powder contains no more than 0.05 wt % of an element of Group Ia of the periodic table. The powder may optionally contain 0.1-30 atm % of aluminum and/or 0.1-10 atm % of Y or any other rare earth element based on the total quantity of the metal elements present. In either of these cases, the residue of an element of Group IIa of the periodic table is preferably 0.1 wt % or less.

Abstract: Disclosed herein are granulated particles for magnetic particles for magnetic recording, comprising: acicular ferric hydroxide oxide particles or acicular iron oxide particles; and at least one selected from the group consisting of semisynthetic starch and semisynthetic cellulose and having a bulk density of not less than 0.3 g/cm.sup.3 and a powdering ratio of not more than 40%, and a process for producing the granulated particles, and magnetic particles obtained from such granulated particles.

Abstract: An amorphous magnetic thin film possesses as at least part of a thin film forming area a microstructure composed of a first amorphous phase containing at least either of iron and cobalt and bearing magnetism and a second amorphous phase disposed round the first amorphous phase and containing boron and at least one element selected from among the elements of the 4B Group in the Periodic Table of Elements and exhibits uniaxial magnetic anisotropy in the plane of film. The amorphous magnetic thin film possesses soft magnetism concurrently satisfying high saturation magnetization and high resistivity and, at the same time, easily acquires high frequency permeability by applying magnetic field in the hard axis of magnetization. Use of these amorphous magnetic thin films for plane magnetic elements permits the plane magnetic elements to be miniaturized and to be endowed with exalted performance. The amorphous magnetic thin film possesses a composition substantially represented by the formula:(Fe.sub.1-x Co.sub.x).

Abstract: Disclosed herein is a perpendicular magnetic film comprising a spinel thin film which is formed on a substrate, which contains Fe as the main ingredient and further contains Co and Ni, and which has a coercive force of less than 3000 Oe, the plane (400) thereof being predominantly oriented in parallel with said substrate, the spacing of the plane (400) being not more than 2.082 .ANG., the molar ratio of Co to Fe being 0.005 to 0.32 and the molar ratio of Ni to Co being at least 0.6.

Abstract: A magnetic alloy which contains Fe; 1-15 at. %, at least one element selected from the group consisting of Ti, Zr, Hf, V, Nb, Ta, Mo and W; 1-10 at. %, at least one element selected from among platinum group elements; 0.1-5 at. %, at least one element selected from the group consisting of Cu, Ag, Au and Cd; 1-20 at. %, at least two elements selected from the group consisting of C, O, B and N; and 3-10 at. %, Al.

Abstract: Disclosed herein are spindle-shaped magnetic iron based alloy particles containing at least one selected from the group consisting of Ni, Al, Si, P, Co, Mg, B and Zn, which have a particle length of 0.05 to 0.40 .mu.m, a crystallite size of 110 to 180 .ANG., a specific surface area of 30 to 60 m.sup.2 /g, a coercive force of 1,300 to 1,700 Oe and a saturation magnetization (.sigma.s) of not less than 100 emu/g and a process for producing the same.

Abstract: A high permeability Fe-based alloy having a composition of (Fe.sub.a M.sub.100-a).sub.100-b X.sub.b, wherein M represents at least one element selected from a group consisting of Nb, Zr, Ta, Hf, Ti, V, and Si, and X represents hydrogen or oxygen. The letters a and b represent atomic percentages, wherein preferably 85<=a<=97 and 4<=b<=10. In the preferred embodiment, the alloy comprises a nano-scale alpha-Fe crystalline phase having a grain size of less than 20 nm.

Abstract: The material for permanent magnet according to the present invention comprises an acicular iron powder having successively on the surface (1) a coated layer of aluminum phosphate, (2) a diffused layer of rare earth element or a diffused layer of rare earth element.boron or a diffused layer of rare earth element.boron.nitrogen, and (3) a coated layer of aluminum phosphate. The material for permanent magnet can be produced by (a) a step of mixing and covering an acicular goethite (FeOOH) crystal with aluminum phosphate, (b) a step of preparing an acicular iron powder coated with a layer of aluminum phosphate by reducing under hydrogen atmosphere at 300.degree.-500.degree. C. the acicular goethite (FeOOH) crystal covered by the aluminum phosphate, (c) a step of diffusing a rare earth element or a rare earth element and boron into the surface layer of aluminum phosphate by heating under argon atmosphere at 650.degree.-1000.degree. C.

Abstract: An Fe-based soft magnetic alloy having a high saturated magnetic flux density and having a composition represented by formula (I) below:(Fe.sub.1-a Q.sub.a).sub.b B.sub.x T.sub.y T'.sub.z (I)wherein Q represents at least one element selected from the group consisting of Co and Ni; T represents at least one element selected from the group consisting of Ti, Zr, Hf, V, Nb, Ta, Mo and W, with Zr and/or Hf being always included; T' represents at least one element selected from the group consisting of Cu, Ag, Au, Ni, Pd and Pt; a, b, x, y and z are real numbers satisfying relationships below:0.ltoreq.a.ltoreq.0.05 atomic %,0<b.ltoreq.93 atomic %,0.5.ltoreq.x.ltoreq.16 atomic %,4.ltoreq.y.ltoreq.10 atomic %,0.ltoreq.z.ltoreq.4.5 atomic %provided that when 0<z.ltoreq.4.5 atomic %, Q represents Co and 0<b.ltoreq.92 atomic %; and when z=0, 0.5.ltoreq.x.ltoreq.8 atomic % and 4.ltoreq.y.ltoreq.9 atomic %.

Abstract: The thin film of the invention for use in a magnetic head has an atomic ratio composition of the formula:(Fe.sub.100-z Ni.sub.z).sub.100-x-y M.sub.x N.sub.ywherein M is at least one member selected from the group consisting of Mg, Ca, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Mn, and B, 6.ltoreq.x.ltoreq.14, 6.2.ltoreq.y.ltoreq.15, 0.6.ltoreq.y/x.ltoreq.2.0, and 0.ltoreq.z.ltoreq.10, and has a relative intensity ratio of Fe (200) peak to Fe (110) peak in an X-ray diffraction spectrum of at least 1 and high Fe (100) orientation, with a film surface oriented in (200) plane. Heat treatment improves the (100) orientation. The thin film has very high heat resistance of remaining stable at 700.degree. C. or higher and excellent soft magnetic properties in that it has a high saturation magnetic flux density Bs, a low coercive force, a high magnetic permeability, and minimized magnetostriction. It is hard enough.

Abstract: A soft magnetic thin micro-crystalline film of FeT.sub.b N.sub.c (at %) wherein T is at least one of Zr, Hf, Ti, Nb, Ta, V, Mo and W, and 0<b.ltoreq.20 and 0<c.ltoreq.22 except the range of b.ltoreq.7.5 and c.ltoreq.5, exhibits low coercivity Hc of 80-400 Am.sup.-1 (1-5 Oe) which is stable upon heating at elevated temperature for glass bonding.This film is produced by crystallizing an amorphous alloy film of the similar composition at 350.degree.-650.degree. C. to a crystal grain size up to 30 nm to provide uniaxial anisotropy and increased magnetic permeability at higher frequency. It can also provide low magnetostriction around .lambda.s=0.Composite magnetic head is made using this thin film. Diffusion preventive SiO.sub.2 layer disposed between ferrite core and this thin film in the magnetic head prevents an interdiffusion layer and suppress beat in the output signal.

Abstract: A low-iron loss grain oriented electromagnetic steel sheet subjected to final finishing annealing has a plurality of linear grooves formed on surface of the steel sheet in a direction across the rolling direction, so as to improve the magnetic characteristics of the steel sheet. The linear grooves have a substantially rectangular cross-sectional shape in which the angle of a groove side wall to the direction of the thickness of the sheet is about 60.degree. or less. Projections are present at a bottom portion of the groove, and the depth at the top of the projection at the groove bottom is at least about 1/2 of the maximum groove depth. The steel sheet maintains a low iron loss even after stress relief annealing. The present invention provides a method of stably producing the steel sheet.

Abstract: This invention provides a ferromagnetic material Fe.sub.60 M.sub.x N.sub.y where M is at least one element selected from Al, Ga, In and Tl, N is at least one element selected from P, As, Sb and Bi, x has a range of 1.ltoreq..times..ltoreq.39 and x+y=40 and excluding Fe.sub.60 Ga.sub.X AS.sub.y. A preferred ferromagnetic material is Fe.sub.60 Ga.sub.x As.sub.y , preferably when x has a range of 3.ltoreq..times..ltoreq.37, more preferably when x has a range of 20.ltoreq..times..ltoreq.37, and even more preferably when x has a range of 30.ltoreq..times..ltoreq.37. Typically, ferromagnetic materials of this type can be homogenised by annealing or melt spinning. Melt spun Fe.sub.60 Ga.sub.x As.sub.y can show Curie Temperatures (T.sub.c) of about 470.degree. C. and saturation magnestions of about 89 emu/g. Typically a ferromagentic material of the Fe.sub.60 M.sub.x N.sub.y has a B8.sub.2 type structure.

Abstract: The soft magnetic thin film of the invention has an atomic ratio composition of the formula:[(Fe.sub.1-y Ni.sub.y).sub.1-x M.sub.x ].sub.1-z N.sub.zwherein M is at least one member selected from the group consisting of Mg, Ca, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Mn, and B, 0.001.ltoreq.x.ltoreq.0.15, 0.ltoreq.y.ltoreq.0.1, and 0.001.ltoreq.z.ltoreq.0.15, and has a relative intensity ratio of Fe (200) peak to Fe (110) peak in an X-ray diffraction spectrum of at least 1/3 and high Fe (100) orientation. It has excellent soft magnetic properties in that it has a high saturation magnetic flux density Bs, heat resistance, a low coercive force Hc, and a high magnetic permeability .mu.. A magnetic head using such a thin film has improved otherwise properties, recording/reproducing sensitivity, and electromagnetic properties, and is highly reliable.

Abstract: A magnetic alloy film suitable for high density recording has a composition of (Fe.sub.x M.sub.y N.sub.z).sub.a L.sub.b, where L is Cu and/or Ag. The provision of Cu and/or Ag in a range from 0.5 to 5 atomic % enhances thermal stability of the soft magnet properties of the alloy.

Abstract: The soft magnetic alloy film of the present invention is not a simple nitride alloy film but incorporates a compositional modulation in which at least the content of nitrogen is periodically modulated in the direction of film thickness after the deposition of the alloy film by a sputtering procedure. Also, the soft magnetic alloy film of the present invention contains a main content of Fe for providing higher saturation magnetization, one or more metals selected from Nb, Ta, Zr, Ti, and Hf, and fine grains of Fe based materials developed after annealing. Therefore, the soft magnetic alloy film of the present invention can exhibit better magnetic properties including higher saturation magnetization and improved soft magnetic characteristics after the annealing and also, ensuring minimum magnetostriction with a specific composition.

Abstract: An acicular alloy base magnetic powder comprising iron and cobalt, which has an average particle long axis size of not larger than 0.25 .mu.m, an axial ratio of from 4 to 8, a cobalt content of from 8 to 50% by weight based on the weight of iron and saturation magnetization of at least 120 emu/g after being kept standing at the temperature of 60.degree. C. and relative humidity of 90% for a week, which has improved corrosion resistance and can provide a magnetic recording medium suitable for recording in the short wavelength range.

Abstract: A ferromagnetic thin film comprising Fe as a main component, at least one element of B, C, Al and Si and at least one transition metal element except noble metals Au, Ag, Ru, Pd, Os, Ir and Pt. This can accomplish a ferromagnetic thin film having a high saturation flux density, a high initial permeability and a low coercive force, and also having an excellent corrosion resistance and thermal resistance. The ferromagnetic thin film having the above high performances can be manufactured in a high yield by forming the above materials into a film in an atmosphere of a mixed gas of Ar and N.sub.2, and thereafter heating the film at a given temperature. It is possible to give a magnetic head suitable for high-density recording, that enables good recording and reproducing on and from a magnetic recording medium having a high coercive force.

Abstract: Disclosed is a process for preparing acicular non-sintered iron metal pigments for magnetic signal recording, having a high storage density, high saturation magnetization and remanence, the coercive field strength of which at a given crystallite size of the starting material is low and is increased as desired by subsequent annealing. The preparation of said iron metal pigments is effected by reduction of iron oxide compounds with metal hydrides of metals of the Groups I or II of the Periodic Table of Elements in organic solvents, with the metal hydrides being solvatized with a carrier in the form of a carrier complex.

Abstract: Soft magnetic alloy comprising Fe, a vitrifying element (Si and B), and Cu, and containing a crystalline phase shows a low magnetic permeability of up to 3,000 at 100 kHz. Magnetic cores formed therefrom have low permeability, a wide unsaturation region, and iso.permeability without forming a gap and find application in choke coils and transformers.

Abstract: In the production by the single-roll technique of a thin amorphous strip as the matrix for the manufacture of a thin Co-based amorphous alloy strip or a thin Fe-based microcrystalline alloy strip, the conditions for the production are controlled to those specified by the invention. The production conditions thus controlled concern the atmosphere and the pressure to be used for ejecting a molten metal onto a rotating cooling member, the shape of a nozzle, the distance between the nozzle and the rotary cooling member, the material for the rotary cooling member and peripheral speed of the rotary cooling member, etc. The individual numerical values of these conditions are severally important. The thin strip which has an extremely small thickness and few pinholes thus is obtained. In the thin Co-based amorphous alloy strip, the extreme decrease of thickness to below 4.8 .mu.m notably enhances the soft magnetic properties such as permeability and core loss in the high frequency range.

Abstract: An Fe-based soft magnetic alloy essentially consisting of an Fe-based alloy including fine crystal grains used for such as a magnetic core. An average size of the fine crystal grains is controlled to 300.ANG. or less. Each of the fine crystal grains is composed of a body-centered cubic phase at least partially including a super lattice. This alloy has a high saturation flux density and excellent soft magnetic characteristics such as a low iron loss and a high magnetic permeability. This alloy is suitable as a core material for various kinds of choke coils.

Abstract: Fe-based soft magnetic alloy having excellent soft magnetic characteristics with high saturated magnetic flux density, characterized in that it has fine crystal grains dispersed in an amorphous phase and is expressed by the general formula:Fe.sub.100-a-b-c Cu.sub.a M.sub.b Y.sub.cwhere:"M" is at least one or more selected from elements of groups IVa, Va, VIa of the periodic table, Mn, Co, Ni, Al, and the Platinum group,"Y" is at least one or more selected from Si, B, P, or Cand 3<a.ltoreq.8 (atomic %)0.1<b.ltoreq.83.1.ltoreq.a+b.ltoreq.1215.ltoreq.c.ltoreq.28.Also described is a dust core made from an alloy powder having fine crystal grains dispersed in an amorphous phase and expressed by the formulaFe.sub.100-a-b-c-d-e Cu.sub.a M'.sub.b M".sub.c Si.sub.d B.sub.

Abstract: Disclosed herein are acicular magnetic iron based alloy particles for magnetic recording, containing 1.5 to 10 mol % of B based on Fe (calculated as B) and 1.5 to 10 mol % of Co based on Fe (calculated as Co) in the vicinity of the surfaces of said particles and having a saturation magnetization of not less than 125 emu/g and an S.F.D. value of not more than 0.50, and a process for producing the same.

Abstract: A magnetic alloy represented by the compositional formula:Fe.sub.x N.sub.y M.sub.zwherein M represents at least one of the elements B, C, Al, Ga, or Ge, or M is M'.sub.z L.sub.v wherein M' has the same definition as the above M and L represents at least one selected from the group consisting of Ti, V, Cr, Co, Ni, Cu, Y, Zr, Nb, Mo, Ru, Rh, Pd, Ag, Sn, Sb, Hf, Ta, W, Re, Os, Ir, Pt, Au and Pb; and x, y and z or x, y, z and v have the following relationship: 1.ltoreq.y.ltoreq.20, 0.5.ltoreq.z.ltoreq.15 and x+y+=100 or 1.ltoreq.y.ltoreq.20, 0.5.ltoreq.z.ltoreq.15, 0.3.ltoreq.v.ltoreq.15 and x+y+z+v=100, respectively, in atom %.

Abstract: A ferromagnetic material having the formula MGa.sub.2-x As.sub.x where 0.15.ltoreq.x.ltoreq.0.99 and M represents one of Fe.sub.3, Fe.sub.3 partially substituted by manganese or Fe.sub.3 partially substituted by cobalt.

Abstract: A soft magnetic alloy film has a composition formula expressed by Fex Mz Cw. M is at least one metallic element selected from a group consisting of Ti, Zr, Hf, Nb, Ta, Mo or W, or a mixture of these metallic elements. The composition ratio of x, z and w satisfies the relation expressed by 50 atomic %.ltoreq.x.ltoreq.96 atomic %, 2 atomic %.ltoreq.z.ltoreq.30 atomic %, 0.5 atomic %.ltoreq.w.ltoreq.25 atomic %, and x+z+w=100. The metallic structure of the soft magnetic alloy film basically consists of crystal grains having an average grain size of 0.08 .mu.m or below. The metallic structure contains the crystal phase of carbide of the element M.

Abstract: A magnetic metallic glass alloy exhibits, in combination, high saturation induction and high Curie temperature. The alloy has a composition described by the formula Fe.sub.a Co.sub.b Ni.sub.c B.sub.d Si.sub.e C.sub.f, where "a"-"f" are in atom percent, "a" ranges from about 75 to about 81, "b" ranges from 0 to about 6, "c" ranges from about 2 to about 6, "d" ranges from about 11 to about 16, "e" ranges from 0 to about 4, and "f" ranges from 0 to about 4, with the provisos that (i) the sum of "b" and "c" may not be greater than about 8, (ii) "d" may not be greater than about 14 when "b" is zero (iii) "e" may be zero only when "b" is greater than zero, and (iv) "f" is zero when "e" is zero. This alloy is suitable for use in large magnetic cores used in various applications requiring high magnetization rates, and in the cores of line frequency power distribution transformers, airborne transformers, current transformers, ground fault interrupters, switch-mode power supplies, and the like.

Abstract: A ferritic alloy, having an improved combination of magnetic properties and corrosion resistance, contains, in weight percent, about______________________________________ % ______________________________________ Carbon 0.03 max. Manganese 0.5 max. Silicon 0.5 max. Phosphorus 0.03 max. Sulfur 0-0.5 Chromium 10-13.0 Molybdenum 0-1.5 Nitrogen 0.05 max. Titanium 0.01 max. Aluminum 0.01 max. ______________________________________and the balance is essentially iron. The alloy, and articles made therefrom, provide higher saturation induction than known corrosion resistant, magnetic alloys.

Abstract: A metal-in-gap type magnetic head having a small undulation of reproduction output caused by a pseudo-gap and method of manufacture thereof are provided, wherein the magnetic head employs as a back core a ferrite (particularly, a ferrite containing Sn) and employs in a metal portion which constitutes a front core an alloy film (particularly, a composition transition alloy film) having a composition expressed by T-M-X-N, where T is at least one metal element selected from a group consisting of Fe, Co and Ni, M is at least one metal element selected from a group consisting of Nb, Zr, Ti, Ta, Hf, Cr, Mo, W and Mn, X is at least one metalloid element selected from a group consisting of B, Si and Ge, and N is nitrogen.

Abstract: A method of manufacturing a heat resisting magnetic scale is disclosed which comprises a manufacturing process in which at least a part of a heat resisting base is heated and immediately cooled for the purpose of fusing the heated part to the base and changing both the magnetic characteristics of the part of the base which has been heated and the Curie point of the part which has been heated is raised to 100.degree. C. or higher.

Abstract: A magnetic material having an Fe-Si-Al type magnetic alloy with addition of one or more additive elements selected from a group consisting of Be, Mg, Ca, Sr, Ba, Sc, Y, Nb, Ta and Hf. The material has been subjected to an oxidation heat-treatment so as to contain a predetermined amount of oxygen.

Abstract: A low-frequency transformer including a magnetic core made of an alloy having the composition represented by the general formula:(Fe.sub.1-a M.sub.a).sub.100-x-y-z-.alpha. Cu.sub.x Si.sub.y B.sub.z M'.sub..alpha. (atomic %)wherein M is Co and/or Ni, M' is at least one element selected from the group consisting of Nb, W, Ta, Mo, Zr, Hf and Ti, and a, x, y, z and .alpha. respectively satisfy 0.ltoreq.a.ltoreq.0.3, 0.1.ltoreq.x.ltoreq.3, 0.ltoreq.y.ltoreq.17, 4.ltoreq.z.ltoreq.17, 10.ltoreq.y+z.ltoreq.28 and 0.1.ltoreq..alpha..ltoreq.5, at least 50% of the alloy structure being occupied by fine crystal grains having an average grain size of 1000 .ANG. or less when measured by their maximum diameters. The alloy may further contain at least one element selected from the group consisting of Ge, P, C, Ga, Al and N.

Abstract: A magnetic core material made of a Fe-Co base alloy for use at high frequencies, and has excellent high-frequency alternating magnetic properties. The core material composition is Co: 45-53% by weight, C: 0.3-3% by weight, one or both of Mn and Si: 0.1-2% by weight, at least one of Mg, Ca, and Ce: 0.1-0.2% by weight, and the remainder Fe and unavoidable impurities. The structure of the alloy comprises a ferrite matrix containing graphite in an amount of from 1-20% by volume dispersed therein. The material is applied, for example, in a dot impact printer and to a pulse motor.

Abstract: A description is given of a hard magnetic material whose composition corresponds to the formula RE.sub.2 Fe.sub.17 C.sub.x, RE consisting of at least 70 at. % of Sm. This material has a relatively large uniaxial magnetic anisotropy and a relatively high T.sub.c and is very suitable for use in permanent magnets.

Abstract: The disclosed magnetic nitride T-M-N film (T is at least one metal selected from the group consisting of Fe, Co, Ni and Mn; M is at least one metal selected from the group consisting of Nb, Zr, Ti, Ta, Hf, Cr, W and Mo; N is nitrogen (N)) has excellent wear resistance and high electric resistivity, and the compositionally modulated nitride film shows a soft magnetic property, as well as thermal stability of the properties.

Abstract: A nitrogen-containing Fe-based soft magnetic alloy suitable for use as the material of a magnetic head core, as well as a method for manufacturing the soft magnetic alloy film. Unlike a mere nitride alloy film, the soft magnetic alloy of the present invention has a compositionally modulated structure in which at least the nitrogen content is periodically modulated in the direction of thickness of the film so as to have a nitride layer rich at least in nitrogen and a non-nitride layer poor at least in nitrogen. The soft magnetic alloy film of the invention comprises a main constituent of Fe, at least one metalloid element selected from the group consisting of B, Si and C, and at least one metal element selected from the group consisting of Nb, Ta, Zr and Ti and has fine Fe-based grains included therein.

Abstract: An Fe-based soft magnetic alloy essentially consisting of an Fe-based alloy including fine crystal grains used for such as a magnetic core. An average size of the fine crystal grains is controlled to 300 .ANG. or less. Each of the fine crystal grains is composed of a body-centered cubic phase at least partially including a super lattice. This alloy has a high saturation flux density and excellent soft magnetic characteristics such as a low iron loss and a high magnetic permeability.

Abstract: A magnetic metallic glass alloy exhibits, in combination, high saturation induction and high Curie temperature. The alloy has a composition described by the formula Fe.sub.a Co.sub.b Ni.sub.c B.sub.d Si.sub.e C.sub.f, where "a"- "f" are in atom percent, "a" ranges from about 75 to about 81, "b" ranges from 0 to about 6, "c" ranges from about 2 to about 6, "d" ranges from about 11 to about 16, "e" ranges from 0 to about 4, and "f" ranges from 0 to about 4, with the provisos that (i) the sum of "b" and "c" may not be greater than about 8, (ii) "d" may not be greater than about 14 when "b" is zero, (iii) "e" may be zero only when "b" is greater than zero, and (iv) "f" is zero when "e" is zero. This alloy is suitable for use in large magnetic cores used in various applications requiring high magnetization rates, and in the cores of line frequency power distribution transformers, airborne transformers, current transsformers, ground fault interrupters, switch-mode power supplies, and the like.

Abstract: A ferritic alloy, having an improved combination of magnetic properties and corrosion resistance, contains, in weight percent, about______________________________________ % ______________________________________ Carbon 0.03 max. Manganese 0.5 max. Silicon 0.5 max. Sulfur 0-0.5 Chromium 2-13.0 Molybdenum 0-1.5 Nitrogen 0.05 max. ______________________________________and the balance is essentially iron. The alloy, and articles made therefrom, provide higher saturation induction than known corrosion resistant, magnetic alloys.

Abstract: A magnetic metal powder comprising fine particles of a transition metal which contain 0.2 to 2.5% by weight of carbon substantially in the form of metal carbide and which are of such a geometry as a minor axis length of 100 to 300 .ANG. and a (major to minor) axial ratio of 1 to 50.