Crystallographic and Dielectric Properties in the Solid Solution Systems Pb(Fe2/3W1/3)O3Pb(Mg1/3Ta2/3)O3and Pb(MgW)1/2O3-Pb(FeTa)1/2O3

Kenji Uchino, Shōichiro Nomura

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Abstract

It was found that complete solid solutions are formed in the systems of Pb(Fe2/3W1/3)O3-Pb(Mg1/3Ta2/3)O3andPb(MgW)1/2O3-Pb(FeTa)1/2O3. Pb(Fe2/3W1/3)O3and Pb(Mg1/3Ta2/3)O3are disordered perovskite type ferroelectrics, nevertheless the ordered arrangement of ions in the octahedral positions is formed to some degree in a certain region of intermediate composition. In the case of Pb(MgW)1/2O3-Pb(FeTa)1/2O3, the state changes from antiferro-to ferro-electric at about 70 mole percent of Pb(FeTa)1/2O3. The X-ray intensity of superlattice reflections was analyzed based on two different models. To confirm the ferro- or antiferro-electric behavior, the permittivity was measured in Pb(MgW)1/2O3-Pb(FeTa)1/2O3system under applying d.c. bias field, and forced transition from antiferro to ferro-electric state was observed to occur in the biasing cycle.

Original languageEnglish (US)
Pages (from-to)542-547
Number of pages6
JournalJournal of the Physical Society of Japan
Volume41
Issue number2
DOIs
StatePublished - 1976

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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