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Origin of magnetic anisotropy in La_((1\-x))Sr_(x)MnO₃

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arxiv 2305.16493 v1 pith:KVRL7342 submitted 2023-05-25 cond-mat.str-el cond-mat.mtrl-sci

Origin of magnetic anisotropy in La_((1\-x))Sr_(x)MnO₃

Birendra Kumar , Harish Chandr Chauhan , Ajay Baro , Jyoti Saini , Ankita Tiwari , Mukesh Verma , Yugandhar Bitla , Subhasis Ghosh This is my paper
classification cond-mat.str-el cond-mat.mtrl-sci
keywords anisotropymagneticoriginaroundbackgroundboundaryclustersdomains
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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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