Random spin freezing in uranium intermetallic compound UCuSi

Dexin Li, Shigeki Nimori, Yoshinobu Shiokawa

Research output: Contribution to journalArticlepeer-review


The results of low-temperature ac susceptibility, dc magnetization, magnetic relaxation, specific heat, and electrical resistivity measurements on the uranium intermetallic compound UCuSi, a hexagonal CeCd2-type non-magnetic atom disorder system, are reported. The results establish that a spin-glass state is formed in this compound at low temperature. Some dynamical parameters characterizing the spin freezing state of this system, such as static spin freezing temperature Ts, critical exponent zν, and activation energy Ea, are determined from dynamical analysis of the ac susceptibility data. The observed properties are discussed based on a magnetic cluster model.

Original languageEnglish
Pages (from-to)3299-3306
Number of pages8
JournalJournal of Physics Condensed Matter
Issue number12
Publication statusPublished - 2006 Mar 29


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