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- Publisher
- American Physical Society (APS)
- Copyright
- Copyright © 1969 The American Physical Society
- ISSN
- 1536-6065
- DOI
- 10.1103/PhysRev.187.710
- Publisher site
- See Article on Publisher Site
Abstract
The temperature dependence of the longitudinal and the shear sound-wave velocity along the 100 axis in Fe 3 O 4 is presented. The longitudinal velocity exhibits an anomaly at 130°K, where there is an easy-axis change from the 111 to the 100. Both shear and longitudinal velocities show sharp increases of 7½% and 0.2%, respectively, at 119°K, where the structure changes from cubic to orthorhombic. In addition, the linear magnetoelastic birefringence effect and the shear-velocity changes as a function of magnetic field were used to determine the magnetoelastic coupling constant b 44 as a function of temperature from room temperature to 125°K. These results are compared with values of b 44 obtained from magnetostriction data. Transverse ferroacoustic resonance effects could be observed in the temperature interval 150-300°K.
Journal
Physical Review – American Physical Society (APS)
Published: Nov 10, 1969