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Synchrotron X-ray spectroscopic study of the antiferromagnetic-ferromagnetic transition in Ni-doped FeRh epitaxial thin films

Journal Article · · Journal of Alloys and Compounds
 [1];  [2];  [3];  [3];  [4];  [5];  [6];  [4];  [4];  [4];  [7]
  1. Chinese Academy of Sciences (CAS), Beijing (China). Institute of High Energy Physics; University of Hyogo (Japan)
  2. State Grid Sichuan Electric Power Research Institute, Sichuan (China); Tsinghua Univ., Beijing (China)
  3. Univ. of Tokyo (Japan)
  4. Tsinghua Univ., Beijing (China)
  5. Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
  6. Japan Synchrotron Radiation Research Institute (JASRI), Sayo, Hyogo (Japan)
  7. University of Hyogo (Japan); Osaka Univ. (Japan)

Here we investigate the change of magnetism and electronic structure across the antiferromagnetic (AFM)-ferromagnetic (FM) transition of Ni-doped FeRh epitaxial thin films by x-ray magnetic circular dichroism (XMCD) and hard x-ray photoemission spectroscopy (HAXPES). The Rh L edge XMCD results indicate that the remnant FM phase at low temperature possesses smaller Rh moment than the normal FM phase which can undergo AFM-FM transition. The HAXPES results confirm an increase of Rh 4d density of state at the Fermi level and a possible "well-screened" state at the Ni 2p photoemission in the FM phase. FM fluctuation of the inter-site Fe-Fe exchange coupling within the AFM phase can be interpreted from the temperature dependence of the Fe 2p HAXPES results.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF); National Natural Science Foundation of China (NSFC); Japan Society for the Promotion of Science (JSPS) (KAKENHI); Basic Research Funding of IHEP
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
2386986
Alternate ID(s):
OSTI ID: 1894363
Journal Information:
Journal of Alloys and Compounds, Journal Name: Journal of Alloys and Compounds Vol. 921; ISSN 0925-8388
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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Figures / Tables (4)


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