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The LiTaO 3 powders with sub micrometer grade grain size have been synthesized successfully using a molten salt method. Lithium tantalate began to form at 400°C reaction temperature and transformed to pure phase without residual reactants when it was processed at 500°C for 4h in static air. The undoped LiTaO 3 ceramics with a Curie temperature about 663°C were obtained by pressureless...
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