Accession Number : AD0675058

Title :   ELECTRICAL AND MECHANICAL RELAXATION IN CAF2 DOPED WITH NAF.

Descriptive Note : Technical rept.,

Corporate Author : UTAH UNIV SALT LAKE CITY INST OF MATERIALS RESEARCH

Personal Author(s) : Johnson,Howard B. ; Tolar,Neal J. ; Miller,G. R. ; Cutler,Ivan B.

Report Date : MAY 1968

Pagination or Media Count : 32

Abstract : A loss peak caused by addition of NaF to CaF2 was studied by dielectric loss and internal friction methods. Equations for the observed relaxation times of the sodium ion-fluorine vacancy dipole in electrical and mechanical fields are given. It is proposed that the dipole relaxation occurs by fluorine vacancy jumps in the <100> direction of the first coordination shell of the sodium impurity. A possible explanation of the observed peak broadening as a function of dipole concentration is offered. (Author)

Descriptors :   (*CALCIUM FLUORIDES, DIPOLE MOMENTS), CRYSTAL DEFECTS, SOLID SOLUTIONS, RELAXATION TIME, DIELECTRIC PROPERTIES, ATOMIC ORBITALS, DOPING, ELECTRIC FIELDS, INTERNAL FRICTION, SODIUM COMPOUNDS, FLUORIDES

Subject Categories : Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE