Abstract
We present the results of ac and dc susceptibility, magnetization, magnetic relaxation, specific heat, and electrical resistivity measurements on U2 AuGa3, an orthorhombic CeCu2 -type nonmagnetic atom disorder system. These data clearly indicate that U2 AuGa3 undergoes a spin glass phase transition at a static freezing temperature Ts =23.6 K, in spite of the lack of triangular magnetic structure. It is observed that the variation of the characteristic temperature Tir (the bifurcation point between field-cooled and zero-field-cooled susceptibilities) with applied field H for U2 AuGa3 is not consistent with the "AT line," but follows a Tir ∝- H25 law. The observed spin glass behavior and the formation of frustrated magnetic interactions in U2 AuGa3 are discussed in a magnetic cluster model.
Original language | English |
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Article number | 142505 |
Pages (from-to) | 1-3 |
Number of pages | 3 |
Journal | Applied Physics Letters |
Volume | 87 |
Issue number | 14 |
DOIs | |
Publication status | Published - 2005 Oct 3 |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)