VUV absorption in thin MgO films |
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| Authors: | S.G. MacLean W.W. Duley |
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| Affiliation: | Department of Physics, York University, Toronto, Ontario, Canada M3J 1P3 |
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| Abstract: | Amorphous films of MgO prepared by laser evaporation of bulk crystals show anomalous absorption in the region between 5.2 and 9.2 eV. An additional broad absorption band attributable to absorption by O2? ions in states of low coordination has been observed at 217.5nm (5.7 eV). Amorphous MgO films show no evidence of absorption due to the bulk O2? exciton at 7.62 eV but do exhibit such a feature when annealed to 800C in air. |
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