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- Title
The Solid Solubility of Holmium in BaTiO<sub>3</sub> Under Reducing Conditions.
- Authors
Makovec, Darko; Samardžija, Zoran; Drofenik, Miha
- Abstract
The solid solubility of Ho3+ in BaTiO3 fired under the reducing conditions of a nitrogen atmosphere containing 10% of hydrogen was studied by quantitative electron-probe microanalysis using wavelength-dispersive spectroscopy. The solubility was found to depend mainly on the starting composition. In the TiO2-rich samples, the solubility of the Ho3+ donors at the Ba lattice sites was measured to be ∼4 mol% HoBa (Ba0.96Ho0.04TiO3−δ at 1400°C), which is much higher than after sintering in air. In the BaO-rich compositions, the solubility of the Ho3+ acceptors at the Ti sites (solubility limit at 1500°C) decreased compared with that in air. Like with sintering in air, under reducing conditions, the highest solubility of holmium in BaTiO3 was determined when it was incorporated at both lattice sites (solubility limit ).
- Subjects
SOLUBILITY; ELECTRON probe microanalysis; SPECTRUM analysis; NITROGEN; HYDROGEN; MICROPROBE analysis
- Publication
Journal of the American Ceramic Society, 2006, Vol 89, Issue 10, p3281
- ISSN
0002-7820
- Publication type
Article
- DOI
10.1111/j.1551-2916.2006.01204.x