Thermoelectric material development. Final report (open access)

Thermoelectric material development. Final report

A search was made for improved TE materials that could have higher efficiency than state-of-the-art SiGe alloys used in Radioisotope Thermoelectric Generators. A new family of materials having the skutterudite structure was identified (cubic space group Im3, formula (Fe, Co, Ni)As{sub 3}). Properties of n-type IrSb{sub 3}, CoSb{sub 3}, and their solid solutions were investigated. Pt, Te, Tl, and In were used as dopants. The thermal conductivity was reduced by about 70% for the solid solutions vs the binary compounds. A maximum ZT of about 0.36 was measured on Co-rich solid solutions which is 160% improved over that of the binary compounds.
Date: October 1, 1994
Creator: Vandersande, J.W.; Allevato, C. & Caillat, T.
Object Type: Report
System: The UNT Digital Library
[Barbara C. Jordan Speech for CA Democratic Party] (open access)

[Barbara C. Jordan Speech for CA Democratic Party]

Text of a speech given by Barbara C. Jordan before the California Democratic Party in Los Angeles, California, endorsing Kathleen Brown for election as governor.
Date: October 4, 1994
Creator: Jordan, Barbara C.
Object Type: Text
System: The Portal to Texas History
[Delta Sigma Theta Awards Gala at the 42nd national convention] captions transcript

[Delta Sigma Theta Awards Gala at the 42nd national convention]

Video footage provided by The Black Academy of Arts and Letters shown during the Delta Sigma Theta Awards Gala. The footage shows an animated slideshow with photo slides of famous members of the sorority along with their names and city. A narrator speaks over the slideshow giving a brief description of the women's accomplishments. The women commonly serve their community in positions of education, politics, civil rights, and public service.
Date: October 6, 1994
Creator: unknown
Object Type: Video
System: The UNT Digital Library