TY - JOUR
T1 - Incommensurate spin spiral of the geometrically-frustrated antiferromagnet CdCr2O4
AU - Chung, Jae Ho
AU - Song, Young Sang
AU - Park, Sungil
AU - Ueda, Hiroaki
AU - Ueda, Yutaka
AU - Lee, Seung Hun
N1 - Funding Information:
The authors are grateful to Dr. Eui Kwan Koh of the Korean Basic Science Institute (KBSI) for carrying out DC magnetization measurements. This work is financially supported by National Research Foundation of Korea through the Advanced Research Center for Nuclear Energy & Technology (Grant No. 2011-0031933) and the Nuclear R&D Program (Grants No. 2012-025968 and No. 2012-029621).
PY - 2013/7
Y1 - 2013/7
N2 - CdCr2O4 is a cubic spinel with geometrically-frustrated antiferromagnetic interactions between Cr3+ ions. We investigated the structural and magnetic phase transitions in powder samples by using magnetization and neutron diffraction measurements. An antiferromagnetic phase transition was observed at T N = 8.1 K, below which the crystallographic unit cell was tetragonal (c < a = b). Its incommensurate antiferromagnetic ordering below T N resembles dimerized spin chains in the ab planes with the propagation vector k = (0, 0.088, 1). We argue that the Dzyaloshinskii-Moriya interaction and the magnetic frustration play important roles in establishing the observed magnetic ordering.
AB - CdCr2O4 is a cubic spinel with geometrically-frustrated antiferromagnetic interactions between Cr3+ ions. We investigated the structural and magnetic phase transitions in powder samples by using magnetization and neutron diffraction measurements. An antiferromagnetic phase transition was observed at T N = 8.1 K, below which the crystallographic unit cell was tetragonal (c < a = b). Its incommensurate antiferromagnetic ordering below T N resembles dimerized spin chains in the ab planes with the propagation vector k = (0, 0.088, 1). We argue that the Dzyaloshinskii-Moriya interaction and the magnetic frustration play important roles in establishing the observed magnetic ordering.
KW - Dzyloshinskii-Moriya exchange
KW - Geometrical frustration
KW - Incommensurate magnetic order
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U2 - 10.3938/jkps.62.1900
DO - 10.3938/jkps.62.1900
M3 - Article
AN - SCOPUS:84880020613
VL - 62
SP - 1900
EP - 1904
JO - Journal of the Korean Physical Society
JF - Journal of the Korean Physical Society
SN - 0374-4884
IS - 12
ER -