A cubic AuBe5-type YbCu5 phase with trivalent Yb ion

The cubic YbCu5 compound with the AuBe5-type structure was prepared for the first time under a pressure of 1.5 GPa and annealed at 650°C. The previously reported hexagonal YbCu5 phase with the CaCu5-type structure was also confirmed to be stable under relatively lower pressure and at higher temperat...

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Bibliographic Details
Published inJournal of alloys and compounds Vol. 240; no. 1-2; pp. 261 - 265
Main Authors He, J., Tsujii, N., Nakanishi, M., Yoshimura, K., Kosuge, K.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.07.1996
Subjects
Intermetallic
Structure
Susceptibility
Valence state
YbCu
YbCu
Intermetallic
Structure
Susceptibility
Valence state
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Summary:The cubic YbCu5 compound with the AuBe5-type structure was prepared for the first time under a pressure of 1.5 GPa and annealed at 650°C. The previously reported hexagonal YbCu5 phase with the CaCu5-type structure was also confirmed to be stable under relatively lower pressure and at higher temperature. In contrast to the divalent non-magnetic state of Yb ion in the hexagonal phase. Yb ion in the cubic phase was found to be in the trivalent magnetic state. The cubic YbCu5 phase probably presents a reasonable conjunction for a family of isostructural YbCu5, M1 (M = In, Ag, etc.) compounds, both in crystallographic aspect and in physical properties.
ISSN:0925-8388
1873-4669
DOI:10.1016/0925-8388(96)02884-8