Abstract
Mechanically polished mono-crystalline (100) manganese zinc ferrite samples have been investigated using magneto-optical spectroscopy and hysteresis loops. The as-polished (100) surface shows a thin damaged layer on top of a relatively thick highly compressed layer. The stress is close to the maximum strength and gives rise to an in-plane anisotropy, with an anisotropy field of up to 460 kA/m. The in-plane coercive field is about 1 kA/m. A Syton treatment can remove the stressed layer and reduce the coercivity.
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