SPIN-LATTICE RELAXATION OF TI(+3) IONS IN CORUNDUM: TEMPERATURE DEPENDENCE AT 9 GC FOR THETA = 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 1/T sub 1 = B T + C T to the 9th power + D exp(- delta/T), where B = 0.13/sec K, C = 7 (10-4)/sec K to the minus 9th power, D = 2.5 (10to the 10th power)/sec, and delta = 52 = 1K. These results are discussed in terms of spin-lattice interactions for individual Ti(+3) 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)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1964
- Accession Number
- AD0608624
Entities
People
- D. C. Burnham
- D. W. Feldman
- J. G. Castle Jr.