Abstract
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.
Original language | English |
---|---|
Pages (from-to) | 1900-1904 |
Number of pages | 5 |
Journal | Journal of the Korean Physical Society |
Volume | 62 |
Issue number | 12 |
DOIs | |
Publication status | Published - 2013 Jul |
Keywords
- Dzyloshinskii-Moriya exchange
- Geometrical frustration
- Incommensurate magnetic order
ASJC Scopus subject areas
- Physics and Astronomy(all)