Accession Number : AD0621130

Title :   MAGNETO-ACOUSTIC ABSORPTION IN SOLIDS.

Descriptive Note : Final rept.,

Corporate Author : JOHN CARROLL UNIV CLEVELAND OHIO DEPT OF PHYSICS

Personal Author(s) : Trivisonno,Joseph

Report Date : JUN 1965

Pagination or Media Count : 10

Abstract : The elastic constants of 3 alkali metals were measured as a function of temperature. The ultrasonic pulse-echo technique was used to measure potassium in the temperature range 4.2-195K and sodium in the range 78-300K. Results were in good agreement with other published data. Single crystals of rubidium were grown by a modified Bridgeman technique in an argon atmosphere; elastic constants were not obtained, however, due to an inability to orient crystals by x-ray techniques. Magneto-acoustic measurements were made on crystals of potassium at 10, 30, and 50 mc/sec to obtain dimensions of Fermi surface; change in attenuation with magnetic field was also measured. Ultrasonic attenuation measurements were also conducted on magnesium single crystals at 10-290 mc/sec. A list of the publications and these emanating from this grant are presented. (Author)

Descriptors :   (*ALKALI METALS, ELASTIC PROPERTIES), (*ACOUSTICS, MAGNETIC FIELDS), (*SINGLE CRYSTALS, ULTRASONIC PROPERTIES), POTASSIUM, SODIUM, RUBIDIUM, LOW TEMPERATURE, MAGNESIUM, CRYSTAL GROWTH, ULTRASONIC RADIATION, ATTENUATION, ABSORPTION

Distribution Statement : APPROVED FOR PUBLIC RELEASE