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

Journal Article · Sat Mar 28 00:00:00 EDT 2015 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4915934· OSTI ID:22399333

Ou-Yang, T. Y. ^[1]; Shu, G. J.

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1. Department of Physics, National Taiwan University, Taipei 10617, Taiwan (China)

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.

• OSTI ID: 22399333
• Journal Information: Journal of Applied Physics, Vol. 117, Issue 12; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

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