Multiple magnetic transitions in single-crystal Gd5Rh4Ge10

Ramakrishnan, S. ; Patil, N. G. ; Nieuwenhuys, G. J. ; Mydosh, J. A. (2003) Multiple magnetic transitions in single-crystal Gd5Rh4Ge10 Physical Review B: Condensed Matter and Materials Physics, 68 (9). 094420_1-094420_5. ISSN 1098-0121

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Official URL: http://prb.aps.org/abstract/PRB/v68/i9/e094420

Related URL: http://dx.doi.org/10.1103/PhysRevB.68.094420

Abstract

Compounds belonging to the R5Ir4Si10 family exhibit a variety of ground states depending on the nature of the rare-earth element R. In this work, we report resistivity, magnetization, and heat-capacity studies on a single crystal of Gd5Rh4Ge10. Unusual multiple magnetic transitions are observed in Gd5Rh4Ge10 (where there is no crystal-field contribution). It appears that one of the four-fold transitions which occurs at the highest temperature is a second-order (continuous) phase transition while the other three probably involving moment reorientations and noncollinear amplitude modulations. In general, the basic cause of the magnetic orderings is due to anisotropic indirect exchange interaction (Ruderman-Kittel-Kasuya-Yasida type) coupled with multiple site occupancy of the Gd atoms.

Item Type:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:40794
Deposited On:25 May 2011 12:13
Last Modified:25 May 2011 12:13

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