ISSN:
1662-9752
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:
The cubic pyrochlore phase Bi1.5ZnNb1.5O7 nanopowder was successfully synthesized bythe hydrothermal method (HTM) from the starting materials: Bi(NO3)3·5H2O, ZnO, Nb2O5 and themineralizer: KOH. The XRD patterns prove that the cubic pyrochlore phase Bi1.5ZnNb1.5O7nanopowder can be obtained by HTM, and TEM photographs show that the powders present theregularly granular shape, when the hydrothermal reactions were conducted at synthesis temperatures140~220°C and reaction time for 6~48h. The crystalline sizes of the powders were calculated by theScherrer equation to be about 43~49nm. The crystalline sizes decreased both with the increase insynthesis temperature and the prolonged reaction time until they reached to the minimum size about43nm at 220°C for 24h.However, they tended to increase when the reaction time was above 24h
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/17/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.561-565.495.pdf
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