Characterization of (Bi0.5Na0.5)1-xBaxTiO3grown by the TSSG method

M. Woll, M. Burianek, D. Klimm, S. Gorfman, M. Mühlberg*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Bi0.5Na0.5TiO3(BNT) and (Bi0.5Na0.5)1-xBaxTiO3(BNBT; 0.02≤xBamelt0.12) single crystals were grown by the Top Seeded Solution Growth (TSSG) method under conditions near to the thermodynamic equilibrium. The driving force for the crystallization process is only given by the controlled evaporation of the volatile components Bi2O3and Na2O. The Ba-segregation coefficient in the BNBT-system was determined to be ≈0.56 on the basis of EMPA measurements on single crystals grown from melts with a different Ba-content. Congruent melting of BNT is clearly indicated by DSC measurements at 1291 °C. BNBT behaves in a similar way whereas melting temperatures are lowered with increasing xBa. cp(T) calculations and heating/cooling polarizing microscopy was performed for the investigation of the complex domain state behavior during the phase transitions in BNT.

Original languageEnglish
Pages (from-to)351-354
Number of pages4
JournalJournal of Crystal Growth
Volume401
DOIs
StatePublished - 1 Sep 2014
Externally publishedYes

Keywords

  • A2. Top seeded solution growth
  • B1. Perovskites
  • B2. Ferroelectric materials

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