Quasi-two-dimensional magnetism in Cr-based MAX phases

International Workshop on Itinerant-Electron Magnetism

Waki, Takeshi^1 ; Liu, Zhongsheng^1 ; Tabata, Yoshikazu^1 ; Nakamura, Hiroyuki^1

Department of Materials Science and Engineering, Kyoto University, Kyoto

606-8501, Japan^1

关键词: Ferromagnetic and anti-ferromagnetic;    Ferromagnets;    Itinerant electrons;    Layered Structures;    Magnetic data;    MAX phasis;    MAX-phase;    Spin fluctuation theory;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/868/1/012007/pdf
DOI  :  10.1088/1742-6596/868/1/012007

来源: IOP

【 摘 要 】

The MAX phase is one possible candidate for quasi-two-dimensional (Q2D) magnets owing to its layered structure. We report itinerant electron ferromagnetic and antiferromagnetic long-range orders in (Cr1-xMnx)2GeC and Cr2GaN, respectively. Because Cr2GaN orders in a spin-density-wave state, the Q2D character is highly plausible. However, the Q2D nature is not straightforward in (Cr1-xMnx)2GeC because of the absence of useful criteria to judge the dimensionality in the itinerant electron ferromagnet. In this article, we attempt to reveal the Q2D character of ferromagnetic (Cr1-xMnx)2GeC by analyzing magnetic data in terms of the spin fluctuation theory for the Q2D system.