Accession Number : AD0855124
Title : Temperature and Frequency Dependence of Nuclear Spin-Lattice Relaxation in Single Crystals of Cadmium Selenide.
Descriptive Note : Master's thesis,
Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING
Personal Author(s) : Cage, Allan Leo
Report Date : MAR 1969
Pagination or Media Count : 59
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)
Descriptors : *NUCLEAR MAGNETIC RESONANCE), (*CADMIUM SELENIDES, SEMICONDUCTORS, HALL EFFECT, NUCLEAR SPINS, CRYSTAL LATTICES, MEDIUM FREQUENCY, HIGH FREQUENCY, CRYOGENICS, DOPING, THESES.
Subject Categories : Solid State Physics
Distribution Statement : APPROVED FOR PUBLIC RELEASE