Abstract
Cathodoluminescence of nanopowders with stoichiometry close to EuAlO3 and GdAlO3 has been studied in the range 250–850nm. The experiments have been performed at room temperature and the constituent lanthanide (3+) ions have been excited by collimated electron beam with energy 10keV. A broad band has been observed with maximum at wavelength 550nm and explained with structural defect in the orthoaluminate group AlO6. Narrow bands belonging to Eu3+ and Gd3+ ions have been identified as 4fN–4fN emission transitions and presented in an energy-level diagram.
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