R-dependency of the hardness of perovskite-type RRh3B compounds (R = La, Gd, Lu and Sc)

Authors
Shishido, T Kudou, K Okada, S Ye, JH Yoshikawa, A Sasaki, T Oku, M Horiuchi, H Higashi, I Kohiki, S Kawazoe, Y Nakajima, K
Citation
T. Shishido et al., R-dependency of the hardness of perovskite-type RRh3B compounds (R = La, Gd, Lu and Sc), JPN J A P 1, 40(10), 2001, pp. 6037-6038
Citations number
7
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS → ACNP
Volume
40
Issue
10
Year of publication
2001
Pages
6037 - 6038
Database
ISI
SICI code
Abstract
Perovskite-type rare-earth rhodium borides of the chemical formula RRh3B (R = La, Gd, Lu and Sc) have been studied from the viewpoint of microhardness . Polycrystals of RRh3B are synthesized by the arc melting method. RRh3B co mpounds have a perovskite-type cubic structure (space group: Pm (3) over ba rm). The microhardness become larger with the contraction of the volume of the Rb6B octahedron in the perovskite-type structure. As a result, microhar dness increases with decreasing atomic size of R in RRh3B.