Chapter 1. Synthesis of Single Phase (Ba,Sr)TiO3, by a Reactive Process

  1. Todd Jessen and
  2. Ersan Ustundag
  1. S. Bhaduri,
  2. W. A. Prisbrey,
  3. J. B. Jokisaari and
  4. S. B. Bhaduri

Published Online: 28 MAR 2008

DOI: 10.1002/9780470294635.ch1

24th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 21, Issue 4

24th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 21, Issue 4

How to Cite

Bhaduri, S., Prisbrey, W. A., Jokisaari, J. B. and Bhaduri, S. B. (2008) Synthesis of Single Phase (Ba,Sr)TiO3, by a Reactive Process, in 24th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 21, Issue 4 (eds T. Jessen and E. Ustundag), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294635.ch1

Author Information

  1. Department of Materials and Metallurgical Engineering University of Idaho, Moscow, Idaho 83844–3024

Publication History

  1. Published Online: 28 MAR 2008
  2. Published Print: 1 JAN 2000

ISBN Information

Print ISBN: 9780470375693

Online ISBN: 9780470294635

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Keywords:

  • advanced synthesis;
  • reactive process;
  • synthesis of single phase;
  • scanning electron microscope (SEM);
  • exothermic reactions

Summary

This work utilized an energy-efficient reactive process to produce sputtering targets made out of (Ba,Sr)TiO3 (BST). BST and related materials such as BaTiO3 (BT) and SrTiO3 (ST) (in thin film conditions) are important constituents for future generation computer chips. Because of their high dielectric constant, they are likely to be used as capacitors in dynamic random access memory devices (DRAMS). The reactive process utilized here is the “Microwave Activated Combustion Synthesis (MACS)”. The reactants BaO, BaO2, TiO2, SrO2, and Ti were mixed in proper ratios and reacted in situ inside a commercial microwave furnace. For comparison, same reactants were ignited in a conventional sintering furnace and results were compared. The constituents were chosen based upon the thermodynamic calculations. The phases were evaluated by X-ray diffraction technique (XRD). Microstructures were characterized by a scanning electron microscope (SEM). The results showed that pure single phase BST can be formed by MACS process.