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arXiv · 2409.14772

Domino-like magnetic phase transition induced by a bias voltage in FeRh thin film

Huiliang Wu·Jianbo Wang·Chenbo Zhao·Qingfeng Zhan·Jiangtao Xue·Senfu Zhang·Jinwu Wei·Xiangqian Wang·Qingfang Liu
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Abstract

The first-order magnetic phase transition (MPT) usually happens with a very wide magnetic field span about tens of thousands Oersted which hinders its applications. In this work, we induce a domino-like MPT via introducing a bias voltage in FeRh thin film and thus realize a large narrowing of transition magnetic field span from 6*10^4 Oe to lower than 2*10^3 Oe at room temperature. Meanwhile, nonvolatile switchings between pure magnetic phases of FeRh at room temperature also can be realized by applying voltage pulses. The critical condition and phase diagram for domino-like MPTs are obtained in theory and our experiments support it well. Our works not only benefit the studies and applications of MPT-based devices but also are significant in the applications of the phase transition systems with resistance change.

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Huiliang Wu, Jianbo Wang, Chenbo Zhao, Qingfeng Zhan, Jiangtao Xue, Senfu Zhang, Jinwu Wei, Xiangqian Wang, Qingfang Liu. 2024-09-23. Domino-like magnetic phase transition induced by a bias voltage in FeRh thin film. https://arxiv.org/abs/2409.14772

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