ATTENUATION MEASUREMENTS OF ULTRASONIC WAVES IN MANGANESE FLUORIDE IN THE REGION OF THE NEEL TEMPERATURE.
Abstract
Measurements of the attenuation of ultrasonic waves in MnF2 were made in region of the Neel temperature (67.336 K). Longitudinal waves were propagated at 25.7 Mc and 35.8 Mc along the c-axis, and at 26.2 Mc and 37.2 Mc along the (110) direction. The attenuation peaked at 67.204 K at 35.8 Mc and at 67.206 K at 25.7 Mc for propagation along the c-axis, and at 67.080 K at 37.2 Mc and at 67.128 K at 26.2 Mc in the (110) direction. Shear waves were propagated at 12.5 Mc and 33.6 Mc along the c-axis, and parallel to the a-axis. No attenuation peak was observed for the shear wave. In both longitudinal and shear waves the attenuation increased with increasing frequency. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1965
- Accession Number
- AD0475404
Entities
People
- Carl S. Morse
- Philip Oliver Jr.
Organizations
- Naval Postgraduate School