Extended x-ray absorption fine structure study of MnFeP0.56Si0.44 compound

doi:10.1088/1674-1056/24/8/086101

中国物理B ›› 2015, Vol. 24 ›› Issue (8): 86101-086101.doi: 10.1088/1674-1056/24/8/086101

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇下一篇

Extended x-ray absorption fine structure study of MnFeP_0.56Si_0.44 compound

李英杰^a, 哈斯朝鲁^a, 乌仁图雅^a, 宋志强^a, 欧志强^a, 特古斯^b, 中井生央^b

a Inner Mongolia Key Laboratory for Physics and Chemistry of Functional Materials, Physics and Electronic Information College, Inner Mongolia Normal University, Hohhot 010022, China;
b Department of Electrical and Electronic Engineering, Tottori University, Tottori 680-8552, Japan

收稿日期:2014-11-04 修回日期:2015-03-31 出版日期:2015-08-05 发布日期:2015-08-05
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 51461035, 51161017, and 11404176), the Scientific Research Projects of the Higher Educational Department of Inner Mongolian Autonomous Region, China (Grant No. NJZZ14033). The XAFS measurement was performed under the approval of Photon Factory Program Advisory Committee (Proposal Nos. 2012G095 and 2014G047).

Extended x-ray absorption fine structure study of MnFeP_0.56Si_0.44 compound

Li Ying-Jie (李英杰)^a, Haschaolu W (哈斯朝鲁)^a, Wurentuya (乌仁图雅)^a, Song Zhi-Qiang (宋志强)^a, Ou Zhi-Qiang (欧志强)^a, Tegus O (特古斯)^b, Nakai Ikuo (中井生央)^b

a Inner Mongolia Key Laboratory for Physics and Chemistry of Functional Materials, Physics and Electronic Information College, Inner Mongolia Normal University, Hohhot 010022, China;
b Department of Electrical and Electronic Engineering, Tottori University, Tottori 680-8552, Japan

Received:2014-11-04 Revised:2015-03-31 Online:2015-08-05 Published:2015-08-05
Contact: Tegus O E-mail:tegusph@imnu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 51461035, 51161017, and 11404176), the Scientific Research Projects of the Higher Educational Department of Inner Mongolian Autonomous Region, China (Grant No. NJZZ14033). The XAFS measurement was performed under the approval of Photon Factory Program Advisory Committee (Proposal Nos. 2012G095 and 2014G047).

摘要/Abstract

摘要：

The MnFeP_0.56Si_0.44 compound is investigated by x-ray diffraction, magnetic measurements, and x-ray absorption fine structure spectroscopy. It crystallizes in Fe₂P-type structure with the lattice parameters a =b = 5.9823(0) Å and c = 3.4551(1) Å and undergoes a first-order phase transition at the Curie temperature of 255 K. The Fe K edge and Mn K edge x-ray absorption fine structure spectra show that Mn atoms mainly reside at 3g sites, while 3f sites are occupied by Fe atoms. The distances between the absorbing Fe atom and the first and second nearest neighbor Fe atoms in a 3f-layer shift from 2.65 Å and 4.01 Å in the ferromagnetic state to 2.61 Å and 3.96 Å in the paramagnetic phase. On the other hand, the distance between the 3g-layer and 3f-layer changes a little as 2.66 Å–2.73 Å below the Curie temperature and 2.68 Å–2.75 Å above it.

关键词: MnFeP_0.56Si_0.44 compound, Mn K edge, Fe K edge, EXAFS, local structure

Abstract:

Key words: MnFeP_0.56Si_0.44 compound, Mn K edge, Fe K edge, EXAFS, local structure

中图分类号: (X-ray absorption spectroscopy: EXAFS, NEXAFS, XANES, etc.)

61.05.cj

32.30.Rj (X-ray spectra)

李英杰, 哈斯朝鲁, 乌仁图雅, 宋志强, 欧志强, 特古斯, 中井生央. Extended x-ray absorption fine structure study of MnFeP_0.56Si_0.44 compound[J]. 中国物理B, 2015, 24(8): 86101-086101.

Li Ying-Jie (李英杰), Haschaolu W (哈斯朝鲁), Wurentuya (乌仁图雅), Song Zhi-Qiang (宋志强), Ou Zhi-Qiang (欧志强), Tegus O (特古斯), Nakai Ikuo (中井生央). Extended x-ray absorption fine structure study of MnFeP_0.56Si_0.44 compound[J]. Chin. Phys. B, 2015, 24(8): 86101-086101.

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Extended x-ray absorption fine structure study of MnFeP_0.56Si_0.44 compound

Extended x-ray absorption fine structure study of MnFeP_0.56Si_0.44 compound

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