Temperature and Frequency Dependence of Nuclear Spin-Lattice Relaxation in Single Crystals of Cadmium Selenide.
Abstract
The nuclear magnetic spin-relaxation time of Cd113 in n-type bulk single crystals of undoped CdSe, and CdSe:Li,Fe was determined as a function of temperature, 77 degrees K to 523 degrees K, and frequency, 2 MHz to 10 MHz. A direct method was used on a continuous-wave wide-line spectrometer. Relaxation in the undoped crystal is attributed to fixed paramagnetic impurities at both high and low temperatures, although different donor levels are responsible. In the middle temperature region this mechanism is probably modulated by electron hopping. The data obtained on the doped crystal were inconclusive and no relaxation mechanism could be positively identified. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1969
- Accession Number
- AD0855124
Entities
People
- Allan Leo Cage
Organizations
- Air Force Institute of Technology