Magnetism and electronic structure of selected Gd_1鈭抶Sm_xIn₃ compounds

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• 作者：Anna Bajorek ; ^{anna.bajorek@us.edu.pl} ; Gra偶yna Che艂kowska ; Artur Chrobak ; Marzena Kwiecie艅-Grudziecka
• 关键词：A. Rare-earth intermetallics ; B. Crystallography ; B. Magnetic properties ; B. Electronic structure of metals and alloys
• 刊名：Intermetallics
• 出版年：2012
• 期刊代码：36_09669795
• 类别：ms
• 出版时间：July, 2012
• 卷：26
• 期：Complete
• 页码：142-149
• 文件大小：1378 K

摘要

In the paper magnetic properties of polycrystalline Gd_1鈭抶Sm_xIn₃ intermetallic compounds are presented. The cubic AuCu₃-type of crystal structure for the whole series was confirmed with the use of X-ray powder diffraction. A partial replacement of Gd by Sm atoms is reflected in the decreasing of the N茅el temperature (T_N) as well as effective magnetic moment (渭_eff). Magnetic susceptibility of studied compounds follows the modified Curie-Weiss law in the paramagnetic range. Electronic structure studied by XPS method shows a domination of Gd-Sm states in the valence band. The mixed valence state of samarium ions at concentration x = 0.3 was confirmed by analysis of the Sm core level lines.