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Title: Magneto-optical Kerr effect in L1{sub 0} FePdPt ternary alloys: Experiments and first-principles calculations

We have studied the magneto-optical Kerr effect (MOKE) of L1{sub 0} Fe{sub 0.5}(Pd{sub 1−x}Pt{sub x}){sub 0.5} alloy films with both experiments and first-principles calculations. In the visible region, negative Kerr rotation and ellipticity peaks are, respectively, observed in the regions of 1.5–2.0 eV and 1.7–2.6 eV. These peaks are shifted towards higher energies, and their magnitudes are enhanced for larger x. The MOKE evolution is mainly ascribed to the anomalous Hall conductivity contributed by the spin-down d{sub ↓,x{sup 2}−y{sup 2}} bands from Pd and Pt. We established a close correlation among the MOKE spectra, the spin orbit coupling strength, and the band feature for this prototypical system.
Authors:
; ;  [1] ; ; ;  [2] ;  [3] ; ;  [4] ;  [5] ;  [6]
  1. Shanghai Key Laboratory of Special Artificial Microstructure and Pohl Institute of Solid State Physics and School of Physics Science and Engineering, Tongji University, Shanghai 200092 (China)
  2. Department of Physics and Astronomy, University of California, Irvine, California 92697-4575 (United States)
  3. School of Optics Science and Engineering, Fudan University, Shanghai 200433 (China)
  4. State Key Laboratory for Advanced Metals and Materials, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083 (China)
  5. Department of Physics, National Taiwan University, Taipei 106, Taiwan (China)
  6. (China)
Publication Date:
OSTI Identifier:
22275550
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 115; Journal Issue: 18; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CORRELATIONS; ELECTRONIC STRUCTURE; EV RANGE; INTERMETALLIC COMPOUNDS; IRON; KERR EFFECT; LITHIUM; L-S COUPLING; MAGNETO-OPTICAL EFFECTS; PALLADIUM; PLATINUM; SPIN; TERNARY ALLOY SYSTEMS; THIN FILMS