ISSN:
1013-9826
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:
Complex perovskite oxides of Sr0.5(Nb0.5Ta0.5)O3 were synthesized by reassembling (SrNb2O7)2−and (Sr1.5Ta3O10)2− nanosheets followed by topochemical dehydration with heat treatment. Atomicforce microscopy (AFM) images showed that the thicknesses of the (SrNb2O7)2− and (Sr1.5Ta3O10)2−nanosheets were approximately 6 nm (7 unit layers) and 4 nm (3 unit layers), respectively. Ramanscattering measurement has suggested that nanosheet-processed Sr0.5(Nb0.5Ta0.5)O3 withB-site-cation ordering has a superlattice-like structure composed of alternating layers of Sr0.5NbO3and Sr0.5TaO3 along the c-axis. Nanosheet-processed Sr0.5(Nb0.5Ta0.5)O3 with B-site-cation orderingexhibited a dielectric permittivity of 42 (1 MHz), which was lower than that of solid-state-reactedsamples (65) with disordered B-site cations
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.350.55.pdf
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