Modulating Curie Temperature and Magnetic Anisotropy in Nanoscale Layered Cr_{2}Te_{3} Films: Implications for Room-Temperature Spintronics
| Autor: | Lee, In Hak, Choi, Byoung Ki, Kim, Hyuk Jin, Kim, Min Jay, Jeong, Hu Young, Lee, Jong Hoon, Park, Seung-Young, Jo, Younghun, Lee, Chanki, Choi, Jun Woo, Cho, Seong Won, Lee, Suyuon, Kim, Younghak, Kim, Beom Hyun, Lee, Kyeong Jun, Heo, Jin Eun, Chang, Seo Hyoung, Li, Fengping, Chittari, Bheema Lingam, Jung, Jeil, Chang, Young Jun |
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| Rok vydání: | 2021 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | Nanoscale layered ferromagnets have demonstrated fascinating two-dimensional magnetism down to atomic layers, providing a peculiar playground of spin orders for investigating fundamental physics and spintronic applications. However, strategy for growing films with designed magnetic properties is not well established yet. Herein, we present a versatile method to control the Curie temperature (T_{C}) and magnetic anisotropy during growth of ultrathin Cr_{2}Te_{3} films. We demonstrate increase of the TC from 165 K to 310 K in sync with magnetic anisotropy switching from an out-of-plane orientation to an in-plane one, respectively, via controlling the Te source flux during film growth, leading to different c-lattice parameters while preserving the stoichiometries and thicknesses of the films. We attributed this modulation of magnetic anisotropy to the switching of the orbital magnetic moment, using X-ray magnetic circular dichroism analysis. We also inferred that different c-lattice constants might be responsible for the magnetic anisotropy change, supported by theoretical calculations. These findings emphasize the potential of ultrathin Cr_{2}Te_{3} films as candidates for developing room-temperature spintronics applications and similar growth strategies could be applicable to fabricate other nanoscale layered magnetic compounds. Comment: 30 pages, 6 figures, accepted in ACS Applied Nano Materials |
| Databáze: | arXiv |
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