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Raman Spectra and Dielectric Studies in Ti Substituted Bi2 (Zn2/3Nb4/3)O7 Pyrochlores.
- Source :
-
AIP Conference Proceedings . 2016, Vol. 1731 Issue 1, p1-3. 3p. 3 Graphs. - Publication Year :
- 2016
-
Abstract
- Bi2Zn2/3-x/3Nb4/3-2x/3TixO7 (m - BZNT) with x = 0 to 0.4 were synthesized in the conventional solid state route. The dielectric constants of these ceramics at microwave frequencies are found to be increasing from 70 to 114 when x increased from 0 to 0.4. Raman scattering studies were carried out to investigate the effect of Ti4+ substitution on the dielectric properties of Bi2(Zn2/3Nb4/3)O7 (m-BZN) ceramics. The observed Raman peaks in the m-BZNT are slightly shifted towards lower frequency in comparison to that of m-BZN clearly indicated that the Ti4+ ions are indeed occupying substitution sites in the host m - BZN. The anomalous change in intensity and full with at half maxima (FWHM) of Raman modes at 749 and 847 cm-1 suggest change in oxygen octahedral closely related to dielectric properties of m-BZNT. [ABSTRACT FROM AUTHOR]
- Subjects :
- *TITANIUM alloys
*BISMUTH alloys
*RAMAN spectra
*SUBSTITUTION reactions
*PYROCHLORE
Subjects
Details
- Language :
- English
- ISSN :
- 0094243X
- Volume :
- 1731
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- AIP Conference Proceedings
- Publication Type :
- Conference
- Accession number :
- 115778078
- Full Text :
- https://doi.org/10.1063/1.4947997