Magnetization dynamics of a CrO$ 2$ grain studied by micro-Hall magnetometry - Condensed Matter > Strongly Correlated ElectronsReport as inadecuate




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Abstract: Micro-Hall magnetometry is employed to study the magnetization dynamics of asingle, micron-size CrO$ 2$ grain. With this technique we track the motion of asingle domain wall, which allows us to probe the distribution of imperfectionsthroughout the material. An external magnetic field along the grain-s easymagnetization direction induces magnetization reversal, giving rise to a seriesof sharp jumps in magnetization. Supported by micromagnetic simulations, weidentify the transition to a state with a single cross-tie domain wall, wherepinning-depinning of the wall results in stochastic Barkhausen jumps.



Author: Pintu Das, Fabrizio. Porrati, Steffen Wirth, Ashna Bajpai, Michael Huth, Yuzo Ohno, Hideo Ohno, Jens Müller

Source: https://arxiv.org/







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