Abstract: The present invention relates to particles comprising a core and a shell, and a method of producing said particle. The core comprises mainly TiN, wherein the shell comprises mainly TiO2. The shell has a thickness of more than 5 nm and of less than 200 nm. The core size is preferably larger than 10 nm and is preferably smaller than 100 um.

Abstract: A semiconductor device, for example an IC, having conductor tracks (3) of a metal (3) exhibiting a better conductance than aluminium, such as copper, silver, gold or an alloy thereof. The tracks are situated on an insulating layer (2) and are connected to a semiconductor region (1A) or to an aluminium conductor track by means of a metal plug (5), for example of tungsten, which is situated in an aperture (4) in the insulating layer (2). The bottom and walls of the aperture (4) are provided with an electroconductive material (6), such as titanium nitride, which forms a diffusion barrier for the metal (3). In accordance with the invention, the insulating layer (2) comprises a sub-layer (2A), which forms a diffusion barrier for the metal (3) and which extends, outside the aperture (4), throughout the surface of the semiconductor body (10). As a result, the conductor tracks (3) no longer have to be provided with a sheath serving as a diffusion barrier for the metal (3).

Abstract: The invention relates to a low-pressure mercury discharge lamp with a very good color rendering and with a color point (x.sub.L, y.sub.L on or adjacent the Planckian locus, provided with a gastight, radiation-transmitting envelope which contains mercury and rare gas, and provided with a luminescent layer which comprisesa first luminescent material activated by bivalent europium having an emission mainly in the blue region of the visible portion of the spectrum,a second luminescent material activated by bivalent manganese and having at least an emission band mainly in the red region of the visible spectrum anda third luminescent material having an emission mainly in the yellow region of the visible spectrum.According to the invention, the third luminescent material is defined by the formulaSr.sub.(2-x-y) M.sub.x SiO.sub.4 :Eu.sup.+2.sub.y,in which 0,0005.ltoreq.y.ltoreq.0,05, M being barium and/or calcium and 0,01.ltoreq.x.ltoreq.0,1.

Abstract: A method of manufacturing a semiconductor device whereby on a surface (1) of a semiconductor body (2) a layer comprising aluminum (3) is deposited, in which conductor tracks (4) are etched, between which then an insulating aluminum compound (6) is provided in that a layer of such a material (7) is deposited, which layer is then removed down to the conductor tracks (4) by a bulk reducing treatment, upon which an insulating layer (11) is deposited into which contact windows (13, 14) are etched down to the layer comprising aluminum (4) for local contacting of the conductor tracks (4). The conductor tracks (4) are provided with a top layer (8) before the deposition of the insulating aluminum compound, and the aluminum compound is removed again down to the top layer (8) after the deposition by means of a polishing treatment which is practically incapable of removing the top layer (8).

Abstract: A projection television system comprising a cathode-ray tube having a face plate, a display screen coated with a phosphor of the type ZnS:Ag and an interference filter arranged between the display screen and the face plate.The ZnS:Ag has an admixture which slightly increases the y-coordinate of the light emitted by the phosphor.This enables an increased maximum luminance in the white-D-point without the y-coordinate of the light emitted by the cathode-ray tube becoming too low.

Abstract: A superconductive thin layer of an oxidic material is manufactured by contacting at least two starting substtances with each other, after which diffusion and a chemical reaction in the solid state occur by means of increasing the temperature, while forming the superconductive thin layer.

Abstract: Superconductive thin layer of YBa.sub.2 Cu.sub.3 O.sub.7-.delta. in which reactions with the substrate are prevented in that at least the surface of the substrate consists of a compound having such a composition that in the Y.sub.2 O.sub.3 -BaO-CuO phase diagram it is situated on a segregation line with YBa.sub.2 Cu.sub.3 O.sub.7-.delta. as shown in FIG. 1.

Abstract: Blue-luminescing lanthanum-gadolinium-oxybromide, activated by trivalent cerium, which oxybromide is also activated by trivalent terbium and is defined by the molecular formulaLa.sub.1-x-y-z Gd.sub.x Ce.sub.y Tb.sub.z OBr,in which0.25.ltoreq.x.ltoreq.1-y-z,0.002.ltoreq.y.ltoreq.0.05,0.0001.ltoreq.z.ltoreq.0.005 and y.ltoreq.z.

Abstract: Phosphors used in colour cathode ray tubes, particularly but not exclusively projection television tubes, have colour point standards or chromaticities modified to conform to European Broadcasting Union (EBU) standards by disposing an interference filter in the light-path from the phosphor, for example, between the phosphor and the faceplate, which has a peak gain greater than unity over a selected part of the frequency spectrum. As a result, an efficient broadband phosphor can be employed to obtain the desired chromaticity and thereby increase the white-D luminance of projection television systems.

Abstract: A resistance paste for the manufacture of a resistor body, for example, by silk-screening and the resistance body manufactured herewith, which paste comprises a mixture of Pb.sub.2 Rh.sub.x Ru.sub.2-x O.sub.7-y, a permanent binder and a temporary firable binder. In the formula 0.15.ltoreq.x.ltoreq.0.95 and 0.ltoreq.y.ltoreq.1/2. The resulting resistor body in the temperature range from -55.degree. to +150.degree. C. has a temperature coefficient of the resistance between -10.times.10.sup.-6 /.degree.C. and +10.times.10.sup.-6 /.degree.C. and is very stable. The resistance variation during the life of the resistor is smaller than .+-.0.5%.

Abstract: Resistive paste for manufacturing a resistor body by means of screen-printing the paste on a substrate, followed by firing. The paste comprises a silver-palladium alloy, a metal oxidic compound which contains either PdO and/or can react therewith, a permanent and a temporary binder. The metal oxidic compound may be provided as a layer on the AgPd particles or be mixed therewith. The result is a low-ohmic resistor having a .vertline.TRC.vertline.<100.times.10.sup.-6 /.degree.C. in the range from -60.degree. to +200.degree. C.

Abstract: A method of preparing resistance material in accordance with which metal oxides and/or metal oxidic compounds are heated together with a binder and, possibly, metal. A resistor having a temperature coefficient which is low and independent of the dilution, that is to say the level of the resistance value, is obtained by choosing particles which are smaller than 100 nm and vary within a very narrow range only as the starting material.

Abstract: Resistance material comprising a mixture of metal oxidic compounds, metal oxides, a permanent binder and a temporary binder, the resistance-determining component consisting of at least one component having the formula M.sub.x Sr.sub.1-x Rh.sub.2 O.sub.4-4.5 in which M is selected from Pb and Bi and wherein 1/2>x>0. By combining this component with a material having an opposite TCR, a resistor having a very small TCR is obtained. This resistor is formed by firing this resistance material on a substrate.

Abstract: A resistance material comprising a mixture of a permanent binder, a temporary binder and a bismuth-strontium rhodate having a composition defined by the formula Bi.sub.x Sr.sub.1-x Rh.sub.2.5 O.sub.5-5.5 wherein 1/2>x>O as a resistance determining component. This component has a linear positive temperature coefficient of resistance (TCR). A resistor having a very low TCR may be made using a mixture of this resistance-determining material with a resistance-determining component having a negative TCR. The resistor is produced by firing this resistance material on a substrate.

Abstract: Corpuscular material which, while using a whether or not reacting binder, can be processed to resistor bodies. The material consists of corpuscular carrier material of inert oxidic material or, possibly, resistance-determining material, at the surface of which there is an oxidic resistance material retained by chemisorption, such as a noble metal compound. During heating the surface structure is retained. This starting material enables a considerable saving in noble metal compounds.

Abstract: Resistance material consisting of a mixture of metal oxidic compounds, metal oxides, a permanent binder and a temporary binder, the resistance-determining component consisting of barium-rhodate BaRh.sub.6 O.sub.12. This component has a linear positive temperature coefficient of the resistance (TCR) and enables the production of a resistor having a very low TCR by combining the material with a material having a negative TCR. The resistor is obtained by firing this resistance material after it has been applied onto a substrate.

Abstract: Resistance material consisting of a mixture of metal oxidic compounds, metal oxides, a permanent and a temporary binder, the resistance-determining component consisting of thallium rhodate TlRh.sub.2 O.sub.4. This component has a linear positive temperature coefficient of the resistance TCR which enables the composition of a resistor having a very low TCR by combining it with a material having a negative TCR. The resistor is produced on the basis of this resistance material provided on a substrate.

Abstract: .[.Resistance material consisting of a mixture of metal oxidic compounds, metal oxides, a permanent binder and a temporary binder, the resistance-determining component consisting of barium-rhodate BaRh.sub.6 O.sub.12..]. .Iadd.Resistance material consisting essentially of a mixture of a permanent binder, a temporary binder and, as a resistance determining component, a barium-rhodate of the formula BaRh.sub.6 O.sub.12. .Iaddend.This component has a linear positive temperature coefficient of the resistance (TCR) and enables the production of a resistor having a very low TCR by combining the material with a material having a negative TCR. The resistor is obtained by firing this resistance material after it has been applied onto a substrate.