A Mossbauer study of the new phases Th4Fe13Sn5 and ThFe0.22Sn2

被引：2
作者：
Principi, G [1 ]
Spataru, T
Maddalena, A
Palenzona, A
Manfrinetti, P
Blaha, P
Schwarz, K
Kuncser, V
Filoti, G
机构：
[1] Univ Padua, INFM, DIM, Settore Mat, Padua, Italy
[2] Univ Genoa, INFM, Dipartimento Chim & Chim Ind, Genoa, Italy
[3] Univ Vienna, Inst Phys & Theoret Chem, Vienna, Austria
[4] Natl Inst Phys Mat, Bucharest, Romania
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2001年 / 317卷
关键词：
intermetallics; Mossbauer spectroscopy; magnetic properties;
D O I：
10.1016/S0925-8388(00)01389-X
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Two new phases Th4Fe13Sn5 and ThFe0.22Sn2 have been studied by Fe-57 and Sn-119 Mossbauer spectroscopy. The Fe-57 Mossbauer spectra of Th4Fe13Sn5, measured at room temperature and 4.2 Ii without and with applied magnetic field up to 5.5 T, exhibit four sextets. Our measurements prove that all four Ft: sub-lattices are collinear. The Sn-119 Mossbauer spectra of Th4Fe13Sn5 show two sextets with different B-eff, reflecting the influence of ferromagnetic nn iron atoms. The results obtained from full-potential linear augmented plane wave (LAPW) calculations are in agreement with the experimental data and confirm the assignment of Mossbauer spectra, The Mossbauer data for the ThFe0.22Sn compound prove the existence of two different sites both for Fe and Sn, all having icosahedral co-ordination. (C) 2001 Elsevier Science B.V, All rights reserved.
引用
收藏
页码：567 / 572
页数：6
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