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STUDIA PHYSICA - Issue no. 1 / 2006 | |||||||
Article: |
EFFECT OF YTTRIUM ADDITION ON THE LOCAL ORDER IN BISMUTH-BORATE GLASSES DOPED WITH GADOLINIUM. Authors: S. SIMON, D. ENIU. |
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Abstract: Glass samples of xY2O3(100-x)[yB2O3•Bi2O3] systems (0 ≤ x ≤ 30, y = 1, 3) were prepared by splat-quenching technique. The effect of yttrium addition on the local order in glasses was investigated by electron paramagnetic resonance of Gd3+ ions doped in samples. The results indicate that Gd3+ ions may occupy both yttrium and bismuth sites in the investigated glass samples, what further shows that yttrium can be disposed on bismuth sites. By increasing the yttrium content in the two bismuth borate glass matrices the distribution of Gd3+ ions on sites of different crystal field strength is reversed. | |||||||