Abstract
We have performed high-field and multi-frequency electron spin resonance (ESR) and magnetization measurements in magnetic fields up to about 53 T on single crystals of a delafossite triangular-lattice antiferromagnet CuCrO 2, which has been proposed to show an out-of-plane 120° spiral spin structure below about 24 K. We calculated ESR resonance modes and magnetization curves assuming an Ising-like Heisenberg Hamiltonian with a spiral spin structure by a mean-field theory. The experimental results can be well reproduced using the following parameters, the intralayer exchange constant J/k B=26.9 K, the easy-axis anisotropy D/k B=-0.47 K, and the in-plane g-factor g ab =2.0.
Original language | English |
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Pages (from-to) | 130-133 |
Number of pages | 4 |
Journal | Journal of Low Temperature Physics |
Volume | 159 |
Issue number | 1-2 |
DOIs | |
Publication status | Published - 2010 Apr |
Externally published | Yes |
Keywords
- CuCrO
- High-field and multi-frequency ESR
- High-field magnetization
- Multiferroics
- Triangular lattice
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Materials Science(all)
- Condensed Matter Physics