SEARCH · Engineering Papers

Results for “YBi”

Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

SourceResearch connectionFrom yearThrough year

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

2 records

All sources NASA NTRS DOE OSTI

NASA NTRS1986

Effect of diamagnetic substitution on growth-induced anisotropy in (YBi)3Fe5O12

Films of (Y/3-x-y/Bi/x/Pb/y/)(Fe/5-z/Ga/z/)O12(Z = 0-1.1) and (Y/3-x-y/Bi/x/PB/y/)(Fe/5-w/In/w/)O12(w = 0-O.6) garnets were prepared by liquid-phase epitaxy. The effects of tetrahedral Ga and octahedral In substitution on the Bi-based growth-induced uniaxial anisotropy in (Ybi)3Fe5O12 films were measured. Both Ga and In resulted in a linear decrease in the anisotropy with increasing substitution. The effect of octahedral In was twice that of tetrahedral Ga.

Fratello, V. J.↗

NASA NTRS2005

High performance p-type thermoelectric materials and methods of preparation

The present invention is embodied in high performance p-type thermoelectric materials having enhanced thermoelectric properties and the methods of preparing such materials. In one aspect of the invention, p-type semiconductors of formula Zn4-xAxSb3-yBy wherein 0?x?4, A is a transition metal, B is a pnicogen, and 0?y?3 are formed for use in manufacturing thermoelectric devices with substantially enhanced operating characteristics and improved efficiency. Two methods of preparing p-type Zn4Sb3 and related alloys of the present invention include a crystal growth method and a powder metallurgy method.

Caillat, Thierry↗