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arXiv · 2308.08952

Magnetic Order in A Quenched-High-Temperature-Phase of Cu-Doped MnBi

Gina Angelo·Jeremy G. Philbrick·Jian Zhang·Tai Kong·Xin Gui
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Abstract

Permanent magnets are of great importance due to their vast applications. MnBi has been proposed to be a potential permanent magnet that can be widely used while past efforts have been focused on optimizing the ferromagnetic low-temperature phase of MnBi. Herein, we report a series of new materials, CuxMn1-xBi, crystallizing in a quenched high-temperature-phase (QHTP) MnBi-related structure. We synthesized single crystals of CuxMn1-xBi and found that they crystallize in an unreported trigonal structure (P -31c). Magnetic properties measurements imply high-temperature antiferromagnetic (AFM) ordering and low-temperature ferromagnetic or ferrimagnetic (FM/FiM) ordering. By analyzing the doping effect on crystal structure and magnetic properties, we established a magnetic phase diagram for Cu-doped MnBi and attributed the AFM and FM/FiM to two different atomic sites of Mn.

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Gina Angelo, Jeremy G. Philbrick, Jian Zhang, Tai Kong, Xin Gui. 2023-08-17. Magnetic Order in A Quenched-High-Temperature-Phase of Cu-Doped MnBi. https://arxiv.org/abs/2308.08952

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