Relaxor studies of Na, Fe, and Mg doped SBN ceramics

Sodium-doped strontium barium niobate (SBN) ceramics with tetragonal tungsten bronze structure have been prepared by powder metallurgy. The effect of various dopants on the properties of SBN ceramics has been investigated, and relaxor characteristics have been studied. The dielectric loss is very lo...

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Bibliographic Details
Main Authors: Murty, S.N., Murthy, K.V.R., Padmavathi, G., Bhanumathi, A., Murty, K.L.
Format: Conference Proceeding
Language:English
Subjects:
Barium
Ceramics
Dielectric constant
Dielectric losses
Iron
Niobium compounds
Powders
Strontium
Temperature
Tungsten
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Summary:Sodium-doped strontium barium niobate (SBN) ceramics with tetragonal tungsten bronze structure have been prepared by powder metallurgy. The effect of various dopants on the properties of SBN ceramics has been investigated, and relaxor characteristics have been studied. The dielectric loss is very low in all the compositions. Curie temperature increases slightly and the dielectric constant decreases with increasing frequency. The dielectric constant vs. temperature curves indicate a broad maximum, which is characteristic of a diffuse phase transition.< >
DOI:10.1109/ISAF.1992.300665