Physics Commons^™

Oxygen Vacancies In Lialo2 Crystals, Maurio S. Holston [*], Ian P. Ferguson, John W. Mcclory, Nancy C. Giles, Larry E. Halliburton

Faculty Publications

Singly ionized oxygen vacancies are produced in LiAlO₂ crystals by direct displacement events during a neutron irradiation. These vacancies, with one trapped electron, are referred to as V+O centers. They are identified and characterized using electron paramagnetic resonance (EPR) and optical absorption. The EPR spectrum from the V+O centers is best monitored near 100 K with low microwave power. When the magnetic field is along the [001] direction, this spectrum has a g value of 2.0030 and well-resolved hyperfine interactions of 310 and 240 MHz with the two 27Al nuclei that are adjacent to the oxygen vacancy. A second …