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arXiv · 1905.10776

Molecular Beam Epitaxy Grown $Cr_2Te_3$ Thin Films with Tunable Curie Temperatures

Hongxi Li·Linjing Wang·Tao Yu·Liang Zhou·Yang Qiu·Hongtao He·Fei Ye·Iam Keong Sou·Gan Wang
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Abstract

Materials with perpendicular magnetic anisotropy (PMA) effect with high Curie temperature ($T_C$) is essential in applications. In this work, $Cr_2Te_3$ thin films showing PMA with $T_C$ ranging from 165 K to 295 K were successfully grown on $Al_2O_3$ by the molecular beam epitaxy (MBE) technique. The structural analysis, magneto-transport and magnetic characterizations were conducted to study the physical origin of the improved $T_C$. In particular, ferromagnetic (FM) and antiferromagnetic (AFM) ordering competition were investigated. A phenomenological model based on the coupling degree between FM and AFM ordering was proposed to explain the observed $T_C$ enhancement. Our findings indicate that the $T_C$ of $Cr_2Te_3$ thin film can be tuned, which make it hold the potential for various magnetic applications.

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Hongxi Li, Linjing Wang, Tao Yu, Liang Zhou, Yang Qiu, Hongtao He, Fei Ye, Iam Keong Sou, Gan Wang. 2019-05-26. Molecular Beam Epitaxy Grown $Cr_2Te_3$ Thin Films with Tunable Curie Temperatures. https://arxiv.org/abs/1905.10776

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