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Title: Dynamic susceptibility study on the skyrmion phase stability of Fe{sub 0.7}Co{sub 0.3}Si

The AC susceptibilities of Fe{sub 1−x}Co{sub x}Si (0.1 ≤ x ≤ 0.7) alloys were measured and compared with that of MnSi. The range of skyrmion phase in the H-T phase space was enlarged and moved to higher temperatures when approximately 1/3 of the Fe was substituted with Co. Comparing with MnSi, the skyrmion phase of Fe{sub 0.7}Co{sub 0.3}Si was found thermodynamically more stable under a much lower and narrower critical field near 280 ± 50 Oe. The stability range in the H-T phase space and the free energy reduction ΔE (as a function of the applied magnetic field) for both the Fe{sub 0.7}Co{sub 0.3}Si and MnSi were compared.
Authors:
 [1] ;  [2] ; ;  [1] ;  [3] ;  [2] ;  [2]
  1. Department of Physics, National Taiwan University, Taipei 10617, Taiwan (China)
  2. (China)
  3. Center for Condensed Matter Sciences, National Taiwan University, Taipei 10617, Taiwan (China)
Publication Date:
OSTI Identifier:
22399333
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 117; Journal Issue: 12; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; APPROXIMATIONS; COBALT SILICIDES; COMPARATIVE EVALUATIONS; CONCENTRATION RATIO; CRITICAL FIELD; FREE ENERGY; IRON SILICIDES; MANGANESE SILICIDES; PHASE SPACE; PHASE STABILITY; PHASE STUDIES; TEMPERATURE DEPENDENCE