Investigation of the domain structure transformation under mechanical deformations in permalloy microparticles

20th International Youth Scientific School "Coherent Optics and Optical Spectroscopy"

Bizyaev, D.A.^1 ; Bukharaev, A.A.^1,2 ; Nurgazizov, N.I.^1,2 ; Khanipov, T.F.^1

Kazan E. K. Zavoisky Physical-Technical Institute, 10/7 Sibirskiy Trakt, Kazan

420034, Russia^1

Kazan Federal University, 18 Kremlevsakya St, Kazan

420008, Russia^2

关键词: Domain structure;    Effective anisotropy;    External magnetic field;    Magnetic force microscopies (MFM);    Mechanical compression;    Mechanical deformation;    Non-uniform distribution;    Substrate surface;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/859/1/012005/pdf
DOI  :  10.1088/1742-6596/859/1/012005

来源: IOP

【 摘 要 】

Using magnetic force microscopy (MFM) and computer simulation it was shown that the mechanical compression of the permalloy microparticles leads to the increase in the effective anisotropy field and the noticeable decrease in the external magnetic field value necessary for the formation of the uniform magnetization in the compressed particle. The analysis of MFM images of microparticles covering the whole substrate surface made it possible to conclude about the uniform or nonuniform distribution of stresses induced in the particles in the different area of the substrate.