Temperature-dependent magnetic anisotropy in the layered magnetic semiconductors Cr I3 and CrB r3

Richter N, Weber D, Martin F, Singh N, Schwingenschloegl U, Lotsch BV, Klaeui M (2018)

Publication Type: Journal article

Publication year: 2018

Journal

Physical Review Materials American Physical Society

Book Volume: 2

Article Number: 024004

Journal Issue: 2

DOI: 10.1103/PhysRevMaterials.2.024004

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 Ku=300±50kJ/m3 at 5K to Ku=43±7kJ/m3 at 60K, 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.

Involved external institutions

Johannes Gutenberg-Universität Mainz (JGU) DE Germany (DE) Max-Planck-Institut für Festkörperforschung DE Germany (DE) King Abdullah University of Science and Technology (KAUST) / جامعة الملك عبد الله للعلوم و التقنية SA Saudi Arabia (SA)

How to cite

APA:

Richter, N., Weber, D., Martin, F., Singh, N., Schwingenschloegl, U., Lotsch, B.V., & Klaeui, M. (2018). Temperature-dependent magnetic anisotropy in the layered magnetic semiconductors Cr I3 and CrB r3. Physical Review Materials, 2(2). https://doi.org/10.1103/PhysRevMaterials.2.024004

MLA:

Richter, Nils, et al. "Temperature-dependent magnetic anisotropy in the layered magnetic semiconductors Cr I3 and CrB r3." Physical Review Materials 2.2 (2018).

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