EFFECT OF B-SITE SUBSTITUTIONS OF Nb ON MICROSTRUCTURE, PHASE TRANSITION TEMPERATURES AND ELECTRICAL PROPERTIES OF (Bi0.5Na0.5)0.94Ba0.06TiO3 CERAMICS
Niobium (Nb) substituted bismuth sodium barium titanate (BNBT) samples with general formula (Bi0.5Na0.5)0.94Ba0.06 (Ti1-5x/4Nbx)O3, where x = 0, 0.003, 0.012 and 0.05 were prepared by solid state reaction method. The crystal phase, microstructure, electrical properties and phase transition temperatu...
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| Format: | Article |
| Language: | English |
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University of Chemistry and Technology, Prague
2014-03-01
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| Series: | Ceramics-Silikáty |
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| Online Access: | http://www.ceramics-silikaty.cz/2014/pdf/2014_01_028.pdf |
| _version_ | 1818215071095980032 |
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| author | ENYEW AMARE ZEREFFA A.V. PRASADA RAO |
| author_facet | ENYEW AMARE ZEREFFA A.V. PRASADA RAO |
| author_sort | ENYEW AMARE ZEREFFA |
| collection | DOAJ |
| description | Niobium (Nb) substituted bismuth sodium barium titanate (BNBT) samples with general formula (Bi0.5Na0.5)0.94Ba0.06 (Ti1-5x/4Nbx)O3, where x = 0, 0.003, 0.012 and 0.05 were prepared by solid state reaction method. The crystal phase, microstructure, electrical properties and phase transition temperatures of these materials were investigated. Samples consisted entirely of rhombohedral structure was formed. Scanning electron micrographs (SEM) revealed enhanced microstructure uniformity and retarded grain growth with increasing niobium content. Dielectric measurement as a function of temperature at variable frequency showed that the dielectric constant gradually decreases with niobium doping. The Curie temperature, TC, got shifted to lower temperature as the amount of dopant increases. |
| first_indexed | 2024-12-12T06:30:14Z |
| format | Article |
| id | doaj.art-ae1161e986474e2b9d7d414379ea6666 |
| institution | Directory Open Access Journal |
| issn | 0862-5468 1804-5847 |
| language | English |
| last_indexed | 2024-12-12T06:30:14Z |
| publishDate | 2014-03-01 |
| publisher | University of Chemistry and Technology, Prague |
| record_format | Article |
| series | Ceramics-Silikáty |
| spelling | doaj.art-ae1161e986474e2b9d7d414379ea66662022-12-22T00:34:37ZengUniversity of Chemistry and Technology, PragueCeramics-Silikáty0862-54681804-58472014-03-015812832EFFECT OF B-SITE SUBSTITUTIONS OF Nb ON MICROSTRUCTURE, PHASE TRANSITION TEMPERATURES AND ELECTRICAL PROPERTIES OF (Bi0.5Na0.5)0.94Ba0.06TiO3 CERAMICSENYEW AMARE ZEREFFA0A.V. PRASADA RAO1Department of Inorganic and Analytical Chemistry, College of Science and Technology, Andhra University, Visakhapatnam – 530003, IndiaDepartment of Inorganic and Analytical Chemistry, College of Science and Technology, Andhra University, Visakhapatnam – 530003, IndiaNiobium (Nb) substituted bismuth sodium barium titanate (BNBT) samples with general formula (Bi0.5Na0.5)0.94Ba0.06 (Ti1-5x/4Nbx)O3, where x = 0, 0.003, 0.012 and 0.05 were prepared by solid state reaction method. The crystal phase, microstructure, electrical properties and phase transition temperatures of these materials were investigated. Samples consisted entirely of rhombohedral structure was formed. Scanning electron micrographs (SEM) revealed enhanced microstructure uniformity and retarded grain growth with increasing niobium content. Dielectric measurement as a function of temperature at variable frequency showed that the dielectric constant gradually decreases with niobium doping. The Curie temperature, TC, got shifted to lower temperature as the amount of dopant increases.http://www.ceramics-silikaty.cz/2014/pdf/2014_01_028.pdf(Bi0.5Na0.5)TiO3DielectricFerroelectricSinteringMicrostructure |
| spellingShingle | ENYEW AMARE ZEREFFA A.V. PRASADA RAO EFFECT OF B-SITE SUBSTITUTIONS OF Nb ON MICROSTRUCTURE, PHASE TRANSITION TEMPERATURES AND ELECTRICAL PROPERTIES OF (Bi0.5Na0.5)0.94Ba0.06TiO3 CERAMICS Ceramics-Silikáty (Bi0.5Na0.5)TiO3 Dielectric Ferroelectric Sintering Microstructure |
| title | EFFECT OF B-SITE SUBSTITUTIONS OF Nb ON MICROSTRUCTURE, PHASE TRANSITION TEMPERATURES AND ELECTRICAL PROPERTIES OF (Bi0.5Na0.5)0.94Ba0.06TiO3 CERAMICS |
| title_full | EFFECT OF B-SITE SUBSTITUTIONS OF Nb ON MICROSTRUCTURE, PHASE TRANSITION TEMPERATURES AND ELECTRICAL PROPERTIES OF (Bi0.5Na0.5)0.94Ba0.06TiO3 CERAMICS |
| title_fullStr | EFFECT OF B-SITE SUBSTITUTIONS OF Nb ON MICROSTRUCTURE, PHASE TRANSITION TEMPERATURES AND ELECTRICAL PROPERTIES OF (Bi0.5Na0.5)0.94Ba0.06TiO3 CERAMICS |
| title_full_unstemmed | EFFECT OF B-SITE SUBSTITUTIONS OF Nb ON MICROSTRUCTURE, PHASE TRANSITION TEMPERATURES AND ELECTRICAL PROPERTIES OF (Bi0.5Na0.5)0.94Ba0.06TiO3 CERAMICS |
| title_short | EFFECT OF B-SITE SUBSTITUTIONS OF Nb ON MICROSTRUCTURE, PHASE TRANSITION TEMPERATURES AND ELECTRICAL PROPERTIES OF (Bi0.5Na0.5)0.94Ba0.06TiO3 CERAMICS |
| title_sort | effect of b site substitutions of nb on microstructure phase transition temperatures and electrical properties of bi0 5na0 5 0 94ba0 06tio3 ceramics |
| topic | (Bi0.5Na0.5)TiO3 Dielectric Ferroelectric Sintering Microstructure |
| url | http://www.ceramics-silikaty.cz/2014/pdf/2014_01_028.pdf |
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