A method of manufacturing a semiconductor device, includes the steps of: (a) forming a first inter-level insulating film on a semiconductor substrate formed with semiconductor elements; (b) forming a contact hole through the first inter-level insulating film; (c) forming a plug made of conductive material capable of being nitrided, the plug being embedded in the contact hole; and (d) heating the semiconductor substrate in a nitriding atmosphere to nitride the plug from a surface thereof. This se...

A resin bonded rare earth magnet, compression molded from rare earth-transition alloy powder and thermosetting resin, having a magnet 1 comprising a mixture of thermosetting resin and rare earth-transition alloy powder with a particle size of between 20 and 300 microns, a filling material 3 with particle size between 0.1 and 15 microns which is used to fill in the depressions 2 on the surface of said magnet 1 and is then fixed with said thermosetting resin, and a corrosion inhibiting coat 4 made...

Atomic layer epitaxy (ALE) is applied to the fabrication of new forms of rare-earth oxides, rare-earth nitrides and rare-earth phosphides. Further, ternary compounds composed of binary (rare-earth oxides, rare-earth nitrides and rare-earth phosphides) mixed with silicon and or germanium to form compound semiconductors of the formula RE-(O, N, P)-(Si,Ge) are also disclosed, where RE=at least one selection from group of rare-earth metals, O=oxygen, N=nitrogen, P=phosphorus, Si=silicon and Ge=germa...

A method of the invention for manufacturing a rare earth bonded magnet has the steps of mixing a rare earth magnet powder, binder resin and an additive at a predetermined ratio, kneading the mixture at a temperature not lower than the thermal deformation temperature of the binder resin, granulating or graining the kneaded blend to granules of an average size ranging from 0.01 mm to 2 mm or so, conducting a compacting molding of the granulated material at a first temperature at which the binder r...

Rare earth metal silicide alloys comprising about 25 to about 40% rare earth metals, about 35 to about 50% Si, about 5 to about 25% Fe, about 2 to about 8% Ca, about 2 to about 4% Ba and about 1 to about 3% Sr, the proportions based on the weight of the alloy are disclosed. Also disclosed is a method of making rare earth metal silicide alloys and a method of treating high strength-low alloy steel with the rare earth metal silicide alloys of the invention.

A method for forming a Schottky diode structure is disclosed. The method includes the steps of: a) Providing a substrate; b) forming a rare-earth containing layer over the substrate; and c) forming a metal layer over the rare-earth containing layer. The Schottky diode structure with a rare-earth containing layer has the properties of high-temperature stability, high Schottky barrier height (SBH), and low reverse leakage current.

The present invention discloses the doping of rare earth elements into porous silicon, resulting in enhancement of luminescence. The doping is an electro-chemical process using constant voltage bias across the two electrodes in which the anode is porous silicon and the cathode is platinum. The doping process involves a well-defined solution of electrolytes that controls the conductivity of the solution, and set values of constant voltages that selectively allow the desired rare earth elements be...

A rare earth optical temperature sensor is disclosed for measuring high temperatures. Optical temperature sensors exist that channel emissions from a sensor to a detector using a light pipe. The invention uses a rare earth emitter to transform the sensed thermal energy into a narrow band width optical signal that travels to a detector using a light pipe. An optical bandpass filter at the detector removes any noise signal outside of the band width of the signal from the emitter.

An R--Fe--B permanent magnet wherein R is Nd or a combination of Nd with a rare earth element is prepared by casting an R--Fe--B alloy, crushing the alloy in an oxygen-free atmosphere of argon, nitrogen or vacuum, effecting comminution, compaction, sintering, aging, and cutting and/or polishing the magnet to give a finished surface. The magnet is then heat treated in an argon, nitrogen or low-pressure vacuum atmosphere having a limited oxygen partial pressure, obtaining a highly oil resistant si...

Rare earth silicate octahedral/tetrahedral molecular sieves with the octahedral chains as rare earth centers exhibit enhanced thermal and hydrothermal stability.