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|Type:||Artigo de periódico|
|Title:||Structurally Tuned Magnetic Properties Of Tbm Rhn In3 M + 2 N (m = 1, 2; N = 0, 1) Intermetallic Antiferromagnets|
Mendonca Ferreira L.
|Abstract:||We report the evolution of the magnetic properties of a new series of intermetallic compounds Tbm Rhn In3 m + 2 n(m = 1, 2 ; n = 0, 1 ) which are structurally related to a class of Ce-based heavy-fermion superconductors (HFS). Measurements of temperature-dependent magnetic susceptibility, specific heat and X-ray resonant magnetic scattering (XRMS) were performed on single crystalline samples of TbIn3, TbRhIn5 and Tb2 RhIn8. The tetragonal materials TbRhIn5 and Tb2 RhIn8 both order antiferromagnetically with higher ordering temperatures (TN = 45.5 and 42.8 K, respectively) than their cubic relative TbIn3 (TN = 32.7 K). Their commensurate magnetic structure and the direction of Tb magnetic moments will be discussed in terms of crystalline electrical field (CEF) effects and Ruderman-Kittel-Kasuya-Yoshida (RKKY) interaction with effects of magnetic frustration being released by lower dimensionality. A more general picture about the role of CEF in determining the magnetic properties of other R-based members of these series is discussed. © 2006 Elsevier B.V. All rights reserved.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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