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arXiv · 2305.16493

Origin of magnetic anisotropy in $La_{(1\-x)}Sr_{x}MnO_{3}$

Birendra Kumar·Harish Chandr Chauhan·Ajay Baro·Jyoti Saini·Ankita Tiwari·Mukesh Verma·Yugandhar Bitla·Subhasis Ghosh
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Abstract

Here, we report the origin of magnetic anisotropy in Sr-doped infinite layer manganites $La_{(1\-x)}Sr_{x}MnO_{3}$ (0.125 \leq x \leq 0.400). Magnetic anisotropy is responsible for the large difference in the temperature dependence of field-cooled and zero-field-cooled magnetization. Translational symmetry breaking in the context of spins around the boundary between the ferromagnetic (FM) antiferromagnetic (AFM) region leads to FM-AFM interaction and results in magnetic anisotropy (exchange anisotropy). Here, we propose that FM-AFM interaction around the boundary between FM clusters or domains in the AFM background or between AFM clusters or domains in the ferromagnetic background is responsible for doping-dependent nonmonotonic behavior and the origin of magnetic anisotropy.

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Birendra Kumar, Harish Chandr Chauhan, Ajay Baro, Jyoti Saini, Ankita Tiwari, Mukesh Verma, Yugandhar Bitla, Subhasis Ghosh. 2023-05-25. Origin of magnetic anisotropy in $La_{(1\-x)}Sr_{x}MnO_{3}$. https://arxiv.org/abs/2305.16493

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