Title :
Relaxor studies of Na, Fe, and Mg doped SBN ceramics
Author :
Murty, Narayana S. ; Murthy, K.V.R. ; Padmavathi, G. ; Bhanumathi, A. ; Murty, Linga K.
Author_Institution :
Dept. of Phys., Andhra Univ., Visakhapatnam, India
fDate :
30 Aug-2 Sep 1992
Abstract :
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
Keywords :
barium compounds; dielectric losses; dielectric relaxation; ferroelectric Curie temperature; ferroelectric transitions; iron; magnesium; permittivity; powder technology; sodium; strontium compounds; Curie temperature; SrxBa1-xNb2O6:Fe; SrxBa1-xNb2O6:Mg; SrxBa1-xNb2O6:Na; dielectric constant; dielectric loss; diffuse phase transition; dopants; powder metallurgy; relaxor characteristics; temperature curves; Barium; Ceramics; Dielectric constant; Dielectric losses; Iron; Niobium compounds; Powders; Strontium; Temperature; Tungsten;
Conference_Titel :
Applications of Ferroelectrics, 1992. ISAF '92., Proceedings of the Eighth IEEE International Symposium on
Conference_Location :
Greenville, SC
Print_ISBN :
0-7803-0465-9
DOI :
10.1109/ISAF.1992.300665
