Direct evidence of ferromagnetism in MnSb2Te4
Wenbo Ge, Paul M. Sass, Jiaqiang Yan, Seng Huat Lee, Zhiqiang Mao and, Weida Wu
TL;DR
This study provides direct magnetic imaging evidence of ferromagnetism in MnSb2Te4, showing weak domain wall pinning and temperature-dependent behavior consistent with bulk magnetization.
Contribution
It presents the first direct magnetic imaging of ferromagnetic domains in MnSb2Te4 using cryogenic magnetic force microscopy.
Findings
Weak pinning of domain walls in MnSb2Te4
Negligible magnetic hysteresis loop observed
Temperature dependence matches bulk magnetization behavior
Abstract
We report the magnetic imaging of ferromagnetic domains in the van der Waals single crystal MnSb2Te4 from two different sources using cryogenic magnetic force microscopy. The magnetic field dependence of the domains reveals very weak pinning of domain walls in MnSb2Te4, resulting in a negligibly small magnetic hysteresis loop. The temperature dependence of the domain contrast reveals a mean field like behavior, in good agreement with that of bulk magnetization measurements.
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