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|Title:||Significant dielectric enhancement in 0.3BiFeO3-0.7SrBi2Nb2O9||Authors:||Gu, H.
|Issue Date:||24-Sep-2001||Citation:||Gu, H., Xue, J., Wang, J. (2001-09-24). Significant dielectric enhancement in 0.3BiFeO3-0.7SrBi2Nb2O9. Applied Physics Letters 79 (13) : 2061-2063. ScholarBank@NUS Repository. https://doi.org/10.1063/1.1405420||Abstract:||Significant dielectric enhancement is observed in 0.3BiFeO3-0.7SrBi2Nb2O9, when a single-phase layered perovskite structure was formed by sintering the mechanically activated oxide composition. The Curie point of xBiFeO3-(1-x)SrBi2Nb2O9 was shifted upward with an increase in the BiFeO3 content. 0.3BiFeO3-0.7SrBi2Nb2O9 exhibits a dielectric constant of 1.84×105 at the Curie point of 750°C. The lattice dimensions of xBiFeO3-(1-x)SrBi2Nb2O9 decrease slightly with an increase in the content of BiFeO3 over the composition range of x=0-0.2, while 0.3 mol BiFeO3 in SrBi2Nb2O9 led to recovery in the lattice dimensions. The much enhanced dielectric properties observed in 0.3BiFeO3-0.7SrBi2Nb2O9 are therefore due to the enlarged rattling space for both Nb5+ and in particular for smaller Fe3+. © 2001 American Institute of Physics.||Source Title:||Applied Physics Letters||URI:||http://scholarbank.nus.edu.sg/handle/10635/107190||ISSN:||00036951||DOI:||10.1063/1.1405420|
|Appears in Collections:||Staff Publications|
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