Geometric Spin Frustration in Zn1-xNixCr2O4 System

International Conference on Strongly Correlated Electron Systems 2016

Khan, A.^1 ; Kaneko, H.^2 ; Faruk, M.O.^1 ; Alam, M.K.^3 ; Kim, C.^3 ; Naher, S.^1 ; Suzuki, H.^2

Department of Physics, Shahjalal University of Science and Technology, Sylhet

3114, Bangladesh^1

Department of Physics, Kanazawa University, Kakuma-machi

920-1192, Japan^2

Department of Emerging Materials Science, Daegu Gyeongbuk Institute of Science and Technology, Daegu, Korea, Republic of^3

关键词: Geometric frustration;    Geometrical frustrations;    Low temperature X-ray diffraction;    Quantum fluctuation;    Spin frustrations;    Spinel compounds;    SQUID magnetometers;    Tetragonal phase;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/807/4/042004/pdf
DOI  :  10.1088/1742-6596/807/4/042004

来源: IOP

【 摘 要 】

At room temperature, the cubic spinel ZnCr2O4is known as the typical geometrically frustrated spin system. Upon cooling this compound undergoes a crystal structure change driven by removing the frustrated degenerated states, accompanying with the magnetic ordering. In the tetragonal phase the c-axis is larger than the a-axis. Another spinel compound NiCr2O4takes the cubic structure above 310 K. Below 310 K NiCr2O4is tetragonally distorted (c/a 1-xNixCr2O4system by the low temperature x-ray diffraction measurement and the SQUID magnetometer.