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

Abstract

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

Citation Formats

Ma, L., Shi, Z., Zhou, S. M., E-mail: wur@uci.edu, E-mail: shiming@tongji.edu.cn, Hu, J., Costa, M., Wu, R. Q., E-mail: wur@uci.edu, E-mail: shiming@tongji.edu.cn, Li, J., Xu, X. G., Jiang, Y., Guo, G. Y., and Graduate Institute of Applied Physics, National Chengchi University, Taipei 116, Taiwan. Magneto-optical Kerr effect in L1{sub 0} FePdPt ternary alloys: Experiments and first-principles calculations. United States: N. p., 2014. Web. doi:10.1063/1.4872463.
Ma, L., Shi, Z., Zhou, S. M., E-mail: wur@uci.edu, E-mail: shiming@tongji.edu.cn, Hu, J., Costa, M., Wu, R. Q., E-mail: wur@uci.edu, E-mail: shiming@tongji.edu.cn, Li, J., Xu, X. G., Jiang, Y., Guo, G. Y., & Graduate Institute of Applied Physics, National Chengchi University, Taipei 116, Taiwan. Magneto-optical Kerr effect in L1{sub 0} FePdPt ternary alloys: Experiments and first-principles calculations. United States. doi:10.1063/1.4872463.
Ma, L., Shi, Z., Zhou, S. M., E-mail: wur@uci.edu, E-mail: shiming@tongji.edu.cn, Hu, J., Costa, M., Wu, R. Q., E-mail: wur@uci.edu, E-mail: shiming@tongji.edu.cn, Li, J., Xu, X. G., Jiang, Y., Guo, G. Y., and Graduate Institute of Applied Physics, National Chengchi University, Taipei 116, Taiwan. Wed . "Magneto-optical Kerr effect in L1{sub 0} FePdPt ternary alloys: Experiments and first-principles calculations". United States. doi:10.1063/1.4872463.
@article{osti_22275550,
title = {Magneto-optical Kerr effect in L1{sub 0} FePdPt ternary alloys: Experiments and first-principles calculations},
author = {Ma, L. and Shi, Z. and Zhou, S. M., E-mail: wur@uci.edu, E-mail: shiming@tongji.edu.cn and Hu, J. and Costa, M. and Wu, R. Q., E-mail: wur@uci.edu, E-mail: shiming@tongji.edu.cn and Li, J. and Xu, X. G. and Jiang, Y. and Guo, G. Y. and Graduate Institute of Applied Physics, National Chengchi University, Taipei 116, Taiwan},
abstractNote = {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.},
doi = {10.1063/1.4872463},
journal = {Journal of Applied Physics},
number = 18,
volume = 115,
place = {United States},
year = {Wed May 14 00:00:00 EDT 2014},
month = {Wed May 14 00:00:00 EDT 2014}
}
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  • CuCr{sub 2}Se{sub 4} is one of the few compounds that exhibits a magneto-optical (MO) Kerr angle of greater than one degree at room temperature. To better understand the origin of this effect, the MO properties of ferromagnetic CuCr{sub 2}X{sub 4} (X=S,thinspSe,thinspTe) spinel chalcogenides are evaluated using fully relativistic local-density electronic structure calculations. Treating the 3d electronic states within the standard band description, excellent agreement with the measured MO spectra is obtained. The calculations are analyzed to further elucidate aspects of the Kerr rotation. {copyright} {ital 1999} {ital The American Physical Society}