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, Suyoun Kim, Younghak Kim, Beom Hyun Lee, Kyeong Jun Heo, Jin Eun Chang, Seo Hyoung Li, Fengping Chittari, Bheema Lingam Jung, Jeil Chang, Young Jun 2024-01-19T14:33:20Z 2024-01-19T14:33:20Z 2022-01-10 2021-05-28 2574-0970 https://pubs.kist.re.kr/handle/201004/116969 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, the 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 the growth of ultrathin Cr2Te3 films. We demonstrate an increase of the TC from 165 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 Cr2Te3 films as candidates for developing room-temperature spintronics applications, and similar growth strategies could be applicable to fabricate other nanoscale layered magnetic compounds. English AMER CHEMICAL SOC FERROMAGNETISM DISCOVERY Modulating Curie Temperature and Magnetic Anisotropy in Nanoscale-Layered Cr2Te3 Films: Implications for Room-Temperature Spintronics Article 10.1021/acsanm.1c00391 1 ACS APPLIED NANO MATERIALS, v.4, no.5, pp.4810 - 4819 ACS APPLIED NANO MATERIALS 4 5 4810 4819 scie scopus 000657373800054 2-s2.0-85105755363 Nanoscience & Nanotechnology Materials Science, Multidisciplinary Science & Technology - Other Topics Materials Science Article FERROMAGNETISM DISCOVERY nanoscale-layered-ferromagnets room-temperature ferromagnetism magnetic anisotropy two-dimensional materials spintronic applications