• Oxide dielectrics

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    • Keywords


      Dielectrics; ferroelectrics; defect structure; composites; piezoelectrics

    • Abstract


      Three aspects of oxide dielectrics are covered (i) structure engineering: making use of crystal structure and crystal chemistry, the dielectric behaviour can be finely tuned, as illustrated in the systems (Ba, Pb) (Ti, Zr)O3 and (Ba, Pb) (Ti, Nb)O3 studied by Biswas. (ii) Defect structure: control of defect structure of Mn-doped BaTiO3 inhibits the reduction of BaTiO3 in reducing atmospheres at high temperatures thus making the use of base metal electrodes possible in manufacturing ceramic capacitors. (iii) Composites: Diphasic composites of oxide dielectrics with other materials may be utilized for producing voltage stable capacitors and dense or flexible piezoelectrics with outstanding properties.

    • Author Affiliations


      E C Subbarao1

      1. Department of Metallurgical Engineering, Indian Institute of Technology, Kanpur - 208 016, India
    • Dates

  • Bulletin of Materials Science | News

    • Dr Shanti Swarup Bhatnagar for Science and Technology

      Posted on October 12, 2020

      Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
      Chemical Sciences 2020

      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
      Physical Sciences 2020

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      Posted on July 25, 2019

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