Please use this identifier to cite or link to this item: http://nopr.niscair.res.in/handle/123456789/8900
Title: Dielectric studies of polycrystalline (Sr,Fe)TiO<sub>3</sub> ceramics
Authors: Srivastava, K K P
Sinha, K K
Keywords: Ferroelectric ceramics
Relaxor
Dielectric relaxation
Issue Date: Nov-2005
Publisher: CSIR
Series/Report no.: G01N33/38
Abstract: The characteristic properties of polycrystalline (Sr,Fe)TiO<sub>3</sub> ceramics have been studied through Mössbauer, EPR, IR and differential scanning calorimetry because perovskite type dielectrics have useful applications in electronic industry. In Fe-doped materials, the small concentration of Fe atoms provides active centres that can be probed through Mössbauer and EPR methods which are precise enough to detect small lattice structural perturbations and yield valuable information. The present work deals with their dielectric properties including dielectric relaxation time that is considered an important study from a theoretical angle. It is found that the two-state Debye relaxation model is inadequate. These ceramics tend to behave like relaxors with ferroelectric transition temperature in the range 200-250°C depending upon iron concentration.
Description: 884-888
URI: http://hdl.handle.net/123456789/8900
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Appears in Collections:IJPAP Vol.43(11) [November 2005]

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