ISSN:
1662-8985
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
BaTiO3 and SrTiO3 ultrafine powders are synthesized from sodium hydrogen titanatenanowires using hydrothermal route. Their preparation and purity depend strongly on the pH valueof reaction system (the amount of added alkaline). Under the reaction condition of strong alkaline,the BaTiO3 phase can be obtained, but the SrTiO3 phase can not be easily prepared. Without theaddition of any alkaline, the pure SrTiO3 phase can be synthesized. Reaction time also affects on thepurity of BaTiO3 phase. Below 15 h of reaction time at reaction temperature 180°C, pure BaTiO3phase can not be prepared. SEM measurement results show that the average diameter of BaTiO3powders is about 200 nm and that of SrTiO3 submicrorods is about 300 nm. Their Raman spectrafurther demonstrate that the prepared products are BaTiO3 and SrTiO3 phases
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/39/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.11-12.603.pdf
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