Conduction mechanism of grain oriented Bi3.15Nd0.85Ti3O12 ceramics fabricated by a hot-forging method
| Autor: | Mun Seok Choi, Hai Joon Lee, Ill Won Kim, Byung Moon Jin, Sun Hee Kang, Chang Won Ahn, Jae-Shin Lee, Sun-Young Lee |
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| Rok vydání: | 2006 |
| Předmět: |
Materials science
Analytical chemistry Mineralogy Dielectric Condensed Matter Physics Microstructure Ferroelectricity Titanate Electronic Optical and Magnetic Materials Mechanics of Materials Electrical resistivity and conductivity visual_art X-ray crystallography Materials Chemistry Ceramics and Composites visual_art.visual_art_medium Ceramic Electrical and Electronic Engineering Electroceramics |
| Zdroj: | Journal of Electroceramics. 17:165-168 |
| ISSN: | 1573-8663 1385-3449 |
| DOI: | 10.1007/s10832-006-7062-1 |
| Popis: | We have fabricated ordinary fired (OF) and grain oriented Bi 3.15 Nd 0.85 Ti 3 O 12 (HF[⊥], HF[//]) samples by a hot-forging technique. The grain orientation factor F calculated from X-ray diffraction patterns of the c-axis oriented Bi 3.15 Nd 0.85 Ti 3 O 12 -HF[//] sample is determined to be above 90%. The dielectric and ferroelectric properties of Bi 3.15 Nd 0.85 Ti 3 O 12 ceramics with different grain orientation have been investigated as a function of temperature. The a-b axis oriented Bi 3.15 Nd 0.85 Ti 3 O 12 -HF[⊥] sample had an enhanced dielectric constant (1163 at T c ) and ferroelectric properties (P r ∼ 32 μC/cm 2 ). The electrical conductivity of BNT ceramic has been studied as a function of temperature in order to investigate the conduction mechanism with different grain orientations. |
| Databáze: | OpenAIRE |
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