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IJPAP Vol.44 [2006] >
IJPAP Vol.44(01) [January 2006] >
| Title: | Electrical properties of La-modified strontium bismuth titanate |
| Authors: | Raghavender, M
Kumar, G S
Prasad, G |
| Keywords: | Dielectric properties
Impedance
Strontium bismuth titanate
Perovskite materials |
| Issue Date: | Jan-2006 |
| Publisher: | CSIR |
| IPC Code: | H01G 7/06 |
| Abstract: | Bismuth ion in four layered strontium
bismuth titanate (SBT), a compound of Aurivillius family, is partially replaced
with La3+ in the place of Bi3+ to synthesize SrBi
(4-x)LaxTi4O15, with x = 0.25, 0.50, 0.75. The ceramic powders were prepared using
chemical route. The temperature dependence of the dielectric and impedance
properties was studied over a wide frequency range. The dielectric properties
showed interesting changes in the transition temperatures. These changes are
correlated with the distortion that sets in the samples due to the
incorporation of lanthanum. The octahedra and square pyramidal lattice
distortion of the perovskite layers in ABO3 is calculated from
lattice parameters. Dielectric transition temperatures are correlated with
displacement of A-site ions with respect to octahedral center. |
| Page(s): | 46-51 |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.44(01) [January 2006]
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