Accession Number:

AD0608624

Title:

SPIN-LATTICE RELAXATION OF TI(+3) IONS IN CORUNDUM: TEMPERATURE DEPENDENCE AT 9 GC FOR THETA = 0.

Descriptive Note:

Scientific rept. no. 4,

Corporate Author:

WESTINGHOUSE RESEARCH LABS PITTSBURGH PA

Report Date:

1964-05-01

Pagination or Media Count:

20.0

Abstract:

Spin relaxation was measured at 9 Gc for several samples of titanium doped Al2O3, over the temperature range from 1.3K to 14K. The spin-lattice relaxation time, T sub1, for the portion of the paramagnetic resonance line at theta 0 havine gsub 1.05 to 1.10, has values varying from 5 sec to 5 x 10 to the minus 9th power sec according to the expression 1T sub 1 B T C T to the 9th power D exp- deltaT, where B 0.13sec K, C 7 10-4sec K to the minus 9th power, D 2.5 10to the 10th powersec, and delta 52 1K. These results are discussed in terms of spin-lattice interactions for individual Ti3 ions. In particular, the value of delta is assigned to the spin-orbit splitting between the lowest pair of electronic doublets for the configuration which may be approximately described as 3d. Effects of covalency are mentioned. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE