Abstract
Strontium bismuth tantalate (SBT) having composition of Sr0.7Bi2.4Ta2O9 has been prepared through sol-gel method using their corresponding metal alkoxides as precursors. Seeded SBT powder was prepared by the addition of 5 wt.% of nanometer sized SBT particles to the sol followed by pyrolysis. By applying non-isothermal kinetic analysis to the DTA results, activation energy values for the unseeded and seeded samples were determined. Enhanced crystallization kinetics was observed for the seeded one and the activation energy for the aurivillius phase formation was found to be 318 kJ/mol, while 375 kJ/mol for the unseeded. The Avrami exponent values for the seeded and unseeded were found to be 2.80 and 0.96 respectively.
Original language | English |
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Pages (from-to) | 89-94 |
Number of pages | 6 |
Journal | Materials Research Society Symposium - Proceedings |
Volume | 688 |
Publication status | Published - 2002 |
Externally published | Yes |
Event | Ferroelectric Thin Films X - Boston, MA, United States Duration: 2001 Nov 25 → 2001 Nov 29 |
ASJC Scopus subject areas
- General Materials Science
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering