EVIDENCE OF MIXED MAGNETIC PHASES IN TBRU2GE2

Citation
A. Garnier et al., EVIDENCE OF MIXED MAGNETIC PHASES IN TBRU2GE2, Physical review. B, Condensed matter, 57(9), 1998, pp. 5235-5239
Citations number
16
Categorie Soggetti
Physics, Condensed Matter
ISSN journal
01631829
Volume
57
Issue
9
Year of publication
1998
Pages
5235 - 5239
Database
ISI
SICI code
0163-1829(1998)57:9<5235:EOMMPI>2.0.ZU;2-A
Abstract
In compounds with normal rare earths at the same crystallographic site , mixed magnetic phases with two distinct rare-earth magnetic states, namely, a zero moment one and another with a high moment, can be stabi lized at low temperature not only in zero applied field but also in di fferent field-induced magnetic phases of a metamagnetic process. These characteristics are observed in tetragonal TbRu2Ge2 from neutron diff raction and magnetization measurements on a single crystal. It is show n that such magnetic structures may originate from a moment instabilit y due to the crystal field in the presence of frustrated exchange inte ractions. Numerical simulations using the periodic-field model allowed us to satisfactorily account for the observed properties and emphasiz e the crucial role played by the crystal field.