ANOMALOUS BEHAVIOR OF THE ELASTIC CONSTANTS OF GADOLINIUM,
Abstract
The elastic constants C sub 33 and C sub 44 of single crystal gadolinium have been examined as a function of temperature (range: 77K to 330K) by means of an acoustical pulse-overlap technique. An anomaly in the elastic constant C sub 33 was seen whereby its value decreased about 2%, and then returned to normal. This anomaly occurred over a 30K temperature range with a minimum at about 222K. There was no evidence of such an effect in C sub 44. Magnetic fields of up to 12K Oe were applied either along the unique axis or in the basal plane which eliminated the effect. The origin of this anomaly is believed to lie with the change in spontaneous moment alignment which is coupled to the acoustic wave by means of a volume magnetostriction. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1968
- Accession Number
- AD0674520
Entities
People
- Marshall Long Jr
Organizations
- University of California, Los Angeles