Epitaxial growth of quasi-2D van der Waals ferromagnets on crystalline substrates.

Autor: Kumar Negi S; Materials Science Centre, Indian Institute of Technology, Kharagpur, West Bengal 721302, India., M B A; Materials Science Centre, Indian Institute of Technology, Kharagpur, West Bengal 721302, India., Paul S; Materials Science Centre, Indian Institute of Technology, Kharagpur, West Bengal 721302, India., Pandey V; Materials Science Centre, Indian Institute of Technology, Kharagpur, West Bengal 721302, India., K Roy A; Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, United States of America., R Glavin N; Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, United States of America., Watanabe K; Research Centre for Electronic and Optical Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan., Taniguchi T; Research Centre for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan., Sarkar S; Materials Engineering, Indian Institute of Technology Jammu, Jammu & Kashmir 181221, India., Kochat V; Materials Science Centre, Indian Institute of Technology, Kharagpur, West Bengal 721302, India.
Jazyk: angličtina
Zdroj: Nanotechnology [Nanotechnology] 2024 Sep 12; Vol. 35 (48). Date of Electronic Publication: 2024 Sep 12.
DOI: 10.1088/1361-6528/ad6ce1
Abstrakt: Intrinsic magnetism in van der Waals materials has instigated interest in exploring magnetism in the 2D limit for potential applications in spintronics and also in understanding novel control of 2D magnetism via variation of layer thickness, gate tunability and magnetoelectric effects. The chromium telluride (Cr x Te y ) family is an interesting subsection of ferromagnetic materials with highTCvalues, also presenting diverse stoichiometry arising from self-intercalation of Cr. Apart from the layered CrTe 2 system, the other non-layered Cr x Te y compounds also offer exceptional magnetic properties, and a novel growth technique to grow thin films of these non-layered compounds offers exciting possibilities for ultra-thin spin-based electronics and magnetic sensors. In this work, we discuss the role of crystalline substrates in chemical vapor deposition growth of non-layered 2D ferromagnets, where the crystal symmetry of the substrate as well as the misfit and strain are the key players governing the growth mechanism of ultra-thin Cr 5 Te 8 , a non-layered ferromagnet. The magnetic studies of the as-grown Cr 5 Te 8 reveal the signatures of co-existing soft and hard ferromagnetic phases, which makes this system an intriguing system to search for emergent topological phases, such as magnetic skyrmions.
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Databáze: MEDLINE
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