Abstract
We have performed magnetostriction and ultrasound measurements on the quasi-one-dimensional S=1/2 Ising-like antiferromagnet BaCo2V 2O8 in high magnetic fields of up to 51 T. The magnetostriction shows lattice shrinking along the c-axis, and we interpret it as the lattice distortion caused by exchange striction and Van-Vleck paramagnetism. It is clarified that the field dependence of sound velocity is correlated to the magnetostriction. We observed a pronounced softening in the sound velocity of the longitudinal-acoustic c33 mode and found a novel phase transition.
Original language | English |
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Article number | 033701 |
Journal | journal of the physical society of japan |
Volume | 80 |
Issue number | 3 |
DOIs | |
Publication status | Published - 2011 Mar |
Keywords
- BaCoV O
- Magnetostriction
- Pulsed high magnetic field
- Quantum spin chain
- Ultrasound
ASJC Scopus subject areas
- Physics and Astronomy(all)