Accession Number : AD0832208

Title :   MICROWAVE ACOUSTICAL LOSS MECHANISMS IN CRYSTALS.

Descriptive Note : Technical management rept. 1 Oct 67-31 Mar 68,

Corporate Author : SPERRY RAND RESEARCH CENTER SUDBURY MA

Personal Author(s) : Kedzie, R. W. ; Worley, J. C. ; McMahon, D. H. ; Kestigian, M. ; Smith, A. B.

Report Date : APR 1968

Pagination or Media Count : 48

Abstract : The results of X-band attenuation measurements over the 4 degrees K to approximately 100 degrees K temperature range are reported for MgO-doped LiNbO3 and LiTaO3 single crystals. These results indicate that the low-temperature acoustic behavior is improved by the addition of MgO to the melt. Attenuation vs temperature measurements at X band are also reported for YA1.99Ga.01G. A new experimental structure is described which will be used in pulse-echo experiments designed to further study the nonlinear effects discussed in previous reports. (Author)

Descriptors :   *SINGLE CRYSTALS), (*ACOUSTIC PROPERTIES, GARNET, OXIDES, LITHIUM COMPOUNDS, TANTALUM COMPOUNDS, NIOBIUM COMPOUNDS, GALLIUM COMPOUNDS, ALUMINUM COMPOUNDS, YTTRIUM COMPOUNDS, CRYSTAL STRUCTURE, X BAND, DOPING, ATTENUATION, CRYOGENICS, SOLID STATE PHYSICS.

Subject Categories : Acoustics
      Crystallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE