A study of Barkhausen avalanche statistics through the critical disorder in a ferromagnetic thin film : experimental investigation and theoretical modeling
Journal of Magnetism and Magnetic Materials(2020)
摘要
•Barkhausen noise experiment at subcritical disorder in thin films.•Noise measured from planar Hall effect, more sensitive than conventional methods.•Observation of peculiar temperature dependence of power-law exponents.•Explained with Random Field Ising model and micromagnetic simulations.
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关键词
Barkhausen statistics,Planar Hall effect,Random field Ising model,Permalloy thin film
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