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Thermally stimulated luminescence from rare-earth-doped barium copper oxides

Journal Article · · Phys. Rev. B: Condens. Matter; (United States)
We report the first thermally stimulated luminescence (TSL) and emission-spectra measurements of x-ray-induced defects in Ho/sub 1.5/Ba/sub 1.5/Cu/sub 2/O/sub x/ and GdBa/sub 2/Cu/sub 3/O/sub x/ in the temperature interval 80--300 K. The Gd-doped oxide exhibits a single TSL glow peak at 195 K with concomitant single-band emission with maximum at 500 nm. Two TSL glow peaks (160 and 172 K) are observed in Ho/sub 1.5/Ba/sub 1.5/Cu/sub 2/O/sub x/, whose spectral emission is characterized by complex, temperature-dependent maxima at 450 and 660 nm. Possible defect mechanisms are discussed.
Research Organization:
Los Alamos National Laboratory, Los Alamos, New Mexico 87545
OSTI ID:
6089859
Journal Information:
Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 36:4; ISSN PRBMD
Country of Publication:
United States
Language:
English