Volume 53, Number 5, March 2001
|Page(s)||591 - 597|
|Section||Condensed matter: structure, mechanical and thermal properties|
|Published online||01 December 2003|
Phonon effects and ESR in
Physikalisches Institut, Universität
Frankfurt - D-60054 Frankfurt, Germany
2 Department of Physics, Tokyo Institute of Technology - Tokyo 152-8551, Japan
Accepted: 14 December 2000
We perform ultrasonic and ESR experiments up to 50 in . As a function of temperature we find anomalies for the elastic constants c22 and c66 around the structural transition at 70. As a function of magnetic field we observe pronounced effects for these modes at the beginning and end of each magnetisation plateau. A linear relation of the c66 mode and the magnetic susceptibility is observed. The ESR modes follow a linear field dependence within the magnetic plateaus.
PACS: 62.65.+k – Acoustical properties of solids / 75.45.+j – Macroscopic quantum phenomena in magnetic systems / 76.30.-v – Electron paramagnetic resonance and relaxation
© EDP Sciences, 2001
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