Please use this identifier to cite or link to this item: http://doi.org/10.25358/openscience-106
Authors: Richter, Nils
Weber, Daniel
Martin, Franziska
Singh, Nirpendra
Schwingenschlögl, Udo
Lotsch, Bettina V.
Kläui, Mathias
Title: Temperature-dependent magnetic anisotropy in the layered magnetic semiconductors CrI3 and CrBr3
Online publication date: 26-Aug-2019
Language: english
Abstract: Chromium trihalides are layered and exfoliable semiconductors and exhibit unusual magnetic properties with a surprising temperature dependence of the magnetization. By analyzing the evolution of the magnetocrystalline anisotropy with temperature in chromium iodide CrI3, we find it strongly changes from K-u = 300 +/- 50 kJ/m(3) at 5 K to Ku = 43 +/- 7 kJ/m(3) at 60 K, close to the Curie temperature. We draw a direct comparison to CrBr3, which serves as a reference, and where we find results consistent with literature. In particular, we show that the anisotropy change in the iodide compound is more than 3 times larger than in the bromide. We analyze this temperature dependence using a classical model, showing that the anisotropy constant scales with the magnetization at any given temperature below the Curie temperature, indicating that the temperature dependence can be explained by a dominant uniaxial anisotropy where this scaling results from local spin clusters having thermally induced magnetization directions that deviate from the overall magnetization.
DDC: 530 Physik
530 Physics
Institution: Johannes Gutenberg-Universität Mainz
Department: FB 08 Physik, Mathematik u. Informatik
Place: Mainz
ROR: https://ror.org/023b0x485
DOI: http://doi.org/10.25358/openscience-106
URN: urn:nbn:de:hebis:77-publ-592110
Version: Accepted version
Publication type: Zeitschriftenaufsatz
License: In Copyright
Information on rights of use: https://rightsstatements.org/vocab/InC/1.0/
Journal: Physical review materials
2
2
Pages or article number: 024004-1
024004-6
Publisher: APS
Publisher place: College Park, Md.
Issue date: 2018
ISSN: 2475-9953
Publisher URL: http://dx.doi.org/10.1103/PhysRevMaterials.2.024004
Publisher DOI: 10.1103/PhysRevMaterials.2.024004
Appears in collections:JGU-Publikationen

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