Temperature and Frequency Dependence of Nuclear Spin-Lattice Relaxation in Single Crystals of Cadmium Selenide.
AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING
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The nuclear magnetic spin-relaxation time of Cd113 in n-type bulk single crystals of undoped CdSe, and CdSeLi,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
- Solid State Physics