Sonocatalyzed Ammonothermal Preparation of Fine Lithium Niobate Powders

A. Rujiwatra; N. Thammajak; Y. Chimupala; Pitak Laoratanakul

doi:10.4028/www.scientific.net/AMR.55-57.37

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Defining Structure in Electrospun Polymer Fibres
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Sonocatalyzed Ammonothermal Preparation of Fine Lithium Niobate Powders
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Effect of Annealing on the Structure and Dielectric Properties in PZT-PCoN Ceramics
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Phase Evolution and Physical Properties of (1-x)BZT-xBFN Ceramic System
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 55-57Sonocatalyzed Ammonothermal Preparation of Fine...

Sonocatalyzed Ammonothermal Preparation of Fine Lithium Niobate Powders

Abstract:

The so-called sonocatalyzed ammonothermal technique has been developed for the preparation of lithium niobate fine powders from commercially as-received niobium pentoxide and lithium nitrate. The present work shows that the application of ultrasonic activation prior to the ammonothermal treatment can produce a single phase lithium niobate fine powder at a relatively low temperature of 220°C. The influences of Li-precursors, ammonia solution concentration, reaction temperature and time, as well as Li:Nb mole ratio - which is evidentially the most critical factor promoting a single phase formation - are discussed.