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 ribbon-shaped strip of an amorphous magnetic alloy is heat treated, while applying a transverse saturating magnetic field. The treated strip is used in a marker for a pulsed-interrogation electronic article surveillance system. A preferred material for the strip is formed of iron, cobalt, silicon and boron with the proportion of cobalt exceeding 30% by atomic percent.

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: 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: Ultrafine particles of Fe-Co-P material with a Fe/Co atomic ratio of from 95/5 to 70/30 and a (Fe+Co)/P atomic ratio of from 85/15 to 60/40 show improved ferromagnetic properties. The average particle size is from 0.005 to 0.1 .mu.m. Such ultrafine particles are prepared through gas phase reaction by evaporating a source material. They are useful in both magnetic and thermomagnetic recording media ensuring high density recording.

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 magnetic material and an actuator having magnetic circuit elements incorporating the magnetic material formed of equal amounts of iron and cobalt and between about 2.1 to 5% by weight vanadium. The actuator is well suited for inclusion in an impact printer for driving the impact members of the impact printer in response to printing signals. The composition of the magnetic material of the actuator provides high energy efficiency under greatly fluctuating direct current conditions by reducing eddy currents.

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: 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 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 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 hard magnetic alloy free of rare earths, consisting of 14-20% of a transition metal (Zr or Hf), 1-5% silicon, 0.3-5.6% boron, and the remainder essentially cobalt, the alloy having a microstructure substantially devoid of nonmagnetic phases and consisting of a high proportion of (Co-Si).sub.11 TM.sub.2 phase and a lesser proportion of (Co-Si).sub.23 TM.sub.6 phase, such phases being distributed throughout in a regular manner in a fine grain. Substitution agents of nickel or iron may be used for up to 10% of the cobalt, substitutional agents of vanadium or niobium may be used for up to 5% of the TM, and aluminum, copper, or gallium for up to 2% of the silicon. The alloy has high coercivity, high temperture stability, and excellent corrosion resistance. The alloy may be processed directly by extrusion with reduced requirements for boron and silicon.

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 magnetic metallic glass alloy exhibits, in combination, high saturation induction and low magnetic anisotropy energy. The alloy has a composition described by the formula Fe.sub.a Co.sub.b B.sub.c Si.sub.d C.sub.e, where "a"-"e" are in atom percent, "a" ranges from about 72 to about 84, "b" ranges from about 2 to about 8, "c" ranges from about 11 to about 16, "d" ranges from about 1 to about 4, and "e" ranges from 0 to about 4, with up to about 1 atom percent of Mn being optionally present. Such an alloy is especially suited for use in large magnetic cores associated with pulse power applications requiring high magnetization rates. Examples of such applications include high power pulse sources for linear induction particle accelerators, induction modules for coupling energy from the pulse source to the beam of these accelerators, magnetic switches in power generators in inertial confinement fusion research, magnetic modulators for driving excimer lasers, and the like.

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: Fe-base soft magnetic alloy powder and dust core having the composition represented by the general formula:(Fe.sub.1-a M.sub.a).sub.100-x-y-z-.alpha.-.beta.-.gamma. Cu.sub.x Si.sub.y B.sub.z M'.sub..alpha. M".sub..beta. X.sub..gamma.wherein M is Co and/or Ni, M' is at least one element selected from the group consisting of Nb, W, Ta, Zr, Hf, Ti and Mo, M" is at least one element selected from the group consisting of V, Cr, Mn, Al, elements in the platinum group, Sc, Y, rare earth elements, Au, Zn, Sn and Re, X is at least one element selected from the group consisting of C, Ge, P, Ga, Sb, In, Be and As, and a, x, y, z, .alpha., .beta. and .gamma. respectively satisfy 0.ltoreq.a.ltoreq.0.5, 0.1.ltoreq.x.ltoreq.3, 0.ltoreq.y.ltoreq.30, 0.ltoreq.z.ltoreq.25, 0.ltoreq.y+z.ltoreq.35, 0.1.ltoreq..alpha..ltoreq.30, 0.ltoreq..beta..ltoreq.10 and 0.ltoreq..gamma..ltoreq.10, at least 50% of the alloy structure being fine crystalline particles having an average particle size of 500 .ANG. or less.

Abstract: A thin film magnetic head provided with a first and a second thin film made of a magnetic material, disposed so as to form a closed magnetic circuit; and an intermediate film made of a non-magnetic material, disposed between the first and the second thin films so as to form a magnetic gap at a part of the magnetic circuit; wherein at least one of the first and the second thin films is made of a quaternary amorphous magnetic alloy, whose principal component is cobalt and which contains hafnium, tantalum and palladium.

Abstract: To obtain an anticorrosive Fe-B-R type permanent magnet; in particular, to reduce deterioration rate of the initial magnetic properties below 10% after the magnet has been kept at 80.degree. C. in 90% relative humidity for 500 hours, the surface of the sintered permanent magnet is coated with metallic coating film layers of at least one noble metal layer and at least one base metal layer disposed on the noble metal layer. Diffusion heat treatment further improves the adhesiveness of the coating film layers.

Abstract: A soft magnetic cobalt/iron alloy with high saturation magnetization comprising 0.15%-0.5% tantalum or niobium or tantalum plus niobium, 33-55% cobalt, the balance consisting of iron apart from very minor alloy ingredients and incidental impurities.

Abstract: The iron-cobalt type soft magnetic material contains 35% to 60% by weight of cobalt, 0.03% to 2.0% by weight of aluminum, the remainder being iron, and is prepared by powder metallurgy.

Abstract: Production of a bonded magnet from a composition of a cross-linkable organic material and a particulate magnetic material by(1) placing in a mold a shaped composition in which the particles of magnetic material are optionally aligned and demagnetized,(2) rotating the mold about an axis thereof,(3) cross-linking the organic material in the shaped composition while rotating the mold,(4) recovering from the mold a shaped article, and(5) optionally remagnetizing the particles.

Abstract: According to the invention, a highly corrosion-resistant alloy that has a high saturated magnetic flux density and can be suitably used as a material for manufacturing magnetic heads is provided.An alloy according to the invention is based on alloy of Fe-Co-Si-Al type to which Cr and Ru if desired are added in order to improve its saturated magnetic flux density and other magnetic characteristics as well as corrosion resistance without degrading its hardness and coercive force.An alloy according to the invention typically contains 1.0 to 3% by weight of Cr as an additive and, if desired, 0.5 to 5% by weight of Ru.

Abstract: Disclosed is a soft magnetic thin film which has superior soft magnetic characteristics and high saturation magnetic flux density. The magnetic thin film is formed by physical vapor deposition process and composed of Fe, Ga, and Si with optional inclusion of Co, Ru, or Cr.

Abstract: A magnetooptical recording medium comprises a ternary amorphous magnetic alloy of Tb-Fe-Co.

Abstract: A cathode-ray tube of the post-focusing type comprising color selection means in the form of a ferromagnetic plate having a large number of apertures. The plate is magnetized so that a magnetic quadrupole lens is formed in each aperture. The ferromagnetic plate consists of an Fe-Co-Cr alloy having 25-27% by weight of Co and the remainder essentially Fe.

Abstract: A ferromagnetic amorphous alloy having a composition represented by (Co.sub.x Ni.sub.y Fe.sub.z).sub.a M.sub.b G.sub.c, wherein M is Cr, Mo and/or W, G is Zr, Hf and/or Ti and x,y,z and a, b, c are selected to meet the conditions of x=1-y-z, 0.ltoreq.y.ltoreq.0.2, 0.ltoreq.z.ltoreq.0.7, a=1-b-c, 0.ltoreq.b.ltoreq.0.05 and 0.05.ltoreq.c.ltoreq.0.2 This amorphous alloy has a superior magnetic characteristic and a high thermal stability.