Magnetic Properties of Fe Nanorings with Small Defects

Abstract

Abstract: Magnetic dynamic properties of Fe nanorings with small defects were simulated with Monte Carlo method. It is found that hysteresis loops of small defect Fe nanoring have "bistable" characteristics, which is consistent with experimental results. Energy research shows that vortex states appear in the region of local energy minimum. Remanence of defect system changes with defect location: The remanence increases first and then decreases with the increase of Y, and remains relatively stable in the middle region. Spin configuration of the system explains the above phenomenon well.

Key words: Fe nanoring with small defect, Monte Carlo method, fast Fourier transform micromagnetism method, magnetic properties

CLC Number:

O482.1

DENG Chuchu, ZHANG Xinyuan, CHEN Shuiyuan, WU Yuhan, YE Qingying, HUANG Zhigao. Magnetic Properties of Fe Nanorings with Small Defects[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2020, 37(4): 473-478.

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