Phase equilibrium of Bi2O3–Fe2O3 pseudo-binary system and growth of BiFeO3 single crystal

✍ Scribed by J. Lu; L.J. Qiao; P.Z. Fu; Y.C. Wu

• Publisher: Elsevier Science
• Year: 2011
• Tongue: English
• Weight: 897 KB
• Volume: 318
• Category: Article
• ISSN: 0022-0248
• DOI: 10.1016/j.jcrysgro.2010.10.181

✦ Synopsis

Thermodynamic decomposition of BiFeO 3 (BFO) powder has been investigated and its peritectic transition temperature was determined to be 852 7 5 1C. Other typical characteristic temperatures in Bi 2 O 3 -Fe 2 O 3 pseudo-binary phase diagram were reevaluated with high-purity starting materials. Based on the precision knowledge of improved Bi 2 O 3 -Fe 2 O 3 pseudo-binary phase diagram, 1-2 mm sized single crystals BFO have been grown and characterized, showing ferroelectric transition temperature near 825 1C and remanent polarization about 70 mC/cm 2 along its polar axis.