US Government As Represented by the Secretary of the Army

Other

Donald W Eckart

Louis E Branovich

Gerard L Freeman

Bernard Smith

Arthur Tauber

Steven C Tidrow

William D Wilber

Robert D Finnegan

William C Drach

Paul Fischer

Ernest Potenziani, Ii

Joel R Shappirio

Bernard Sith

Louis F Branovich

Richard T Lareau

Luis M Casas

Rare earth metal containing compounds of the formula SrYbSbOhave been prepared with high critical temperature thin film superconductor structures, and can be fabricated into a superconductor insulator superconductor step edge Josephson junction, as well as being used in other ferroelectrics, pyroelectrics, and hybrid device structures.

Rare earth metal compounds for use in high critical temperature Josephson junctions

Rare earth metal containing compounds of the formula SrLuSbOand SrLaSbOhave been prepared as high critical temperature thin film superconductor structures, and can be used in other ferroelectrics, pyroelectrics, piezoelectrics, and hybrid device structures.

Rare earth metal compounds for use in high critical temperature thin film super-conductors

Rare earth metal containing compounds of the general formula SrRESbO, wherein RE is a rare earth metal, have been prepared as dielectric substrates and buffer layers in thin film superconductor structures, and can be used in other ferroelectrics, pyroelectrics, piezoelectrics, and hybrid device structures.

Rare earth metal compounds for use in high critical temperature thin film structures for super-conductors, ferroelectrics, pyroelectrics, piezoelectrics, and hybrids

Rare earth metal containing compounds of the formula SrLuSbOhave been prepared with high critical temperature thin film superconductor structures, and can be fabricated into an antenna, as well as being used in other ferroelectrics, pyroelectrics, piezoelectrics, and hybrid device structures.

Rare earth metal compounds for use in high critical temperature thin film super-conducting antennas

Rare earth metal containing compounds of the general formula Sr RESbO , wherein RE is a rare earth metal, have been prepared with high critical temperature thin film superconductor strucutures, and can be used in other ferroelectrics, pyroelectrics, piezoelectrics, and hybrid device structures.

Rare earth metal compounds for use in high critical temperature thin film super-conductors, ferroelectrics, pyroelectrics, piezoelectrics, and hybrids

A method is provided of preparing an impregnated cathode with enhanced thionic emission from a porous billet by impregnating the billed with a suitable impregnant in the presence of an oxygen deficient compound. Additives such as Ir, Os, and Rh react in such a way as to increase emission by reacting to generate oxygen deficient compounds such as WO.sub.2. Moreover, intermediate oxygen sufficient products formed in the chemical reactions can be used as impregnants providing they generate oxygen deficient compounds in the presence of the active emissive material.

Methods of making thermionic cathode using oxygen deficient and fully

Thermionic cathode using oxygen deficient and fully oxidized material

Compounds of the general formula A.sub.2 MeSbO.sub.6 wherein A is either barium (Ba) or strontium (Sr) and Me is a non-magnetic ion selected from the group consisting of scandium (Sc), indium (In) and gallium (Ga) have been prepared and included in high critical temperature thin film superconductor structures.

Compound in the series A.sub.2 MeSbO.sub.6 for use as substrates

A piezoelectrically controlled superconducting switch is provided for use in superconducting devices and piezoelectric devices. This switch includes a substrate, a superconductor which is bonded to the substrate, and a piezoelectric subassembly which has a load applicator and voltage source for straining the superconductor and for changing its superconductor curve of resistivity versus temperature.

Piezoelectrically controlled superconducting switch

A substrate free single crystal pyroelectric film particularly suited for use in rapid thermal response sensors is made from a single crystal substrate by a method including the steps of:

Method of making a pyroelectric film sensing device

A thermionic cathode having an overcoating of emissive material having a position including a mixture Aluminum Tungstate and Scandium Tungstate which react, when heated, to provide the cathode with enhanced electron emissions.

Thermionic cathode

To provide a method of measuring thin film thicknesses that is a simple, ck method for determining the thickness of layers as thin as 1-2 nm which, although destructive, consumes very little material.

Method for measuring thin film thickness

A method is provided of preparing an impregnated cathode with enhanced thionic emission from a porous billet by impregnating the billet with a suitable impregnant in the presence of an oxygen deficient compound.

Method of preparing an impregnated cathode with an enhanced thermionic

An improved scandate cathode having an increased emission density is prepared from a porous tungsten billet that has been impregnated with Ba.sub.3 Al.sub.2 O.sub.6 by coating the top surface of the impregnated billet with a mixture of Sc.sub.6 WO.sub.12,Sc(WO.sub.4).sub.3, and W in the mole ratio of 1:3:2, heating the billet to about 1000.degree. C. in a vacuum to cause BaWO.sub.4 and Sc to form in the billet in a molar ratio of 1:1, removing the billet and cleaning in a jewelers lathe, and preparing the billet for a cathode environment.

Preparing a scandate cathode by impregnating a porous tungsten billet

An improved scandate cathode is made from a hollow cylinder of a metal that ill not react with Sc.sub.2 (WO.sub.4).sub.3. The first step in making such a cathode is to insert a metal plug at the bottom of the cylinder to a height that will allow the remaining volume of the cylinder to be filled with the reactants WO.sub.3 and Sc.sub.2 O.sub.3. Next, the reactants are heated in a vacuum to about 1100.degree. C. to form the reaction product Sc.sub.2 (WO.sub.4).sub.3. The plug is then removed from the cylinder, the cylinder is inverted, and BaH.sub.2 is added to the volume of the cylinder that had been occupied by the plug. Finally, the cylinder is heated to decompose the BaH.sub.2.

Growing community of inventors

Wall, NJ, United States of America

Donald W Eckart