Structural-phase transition and electrical conductivity in tin-modified zirconium titanate

✍ Scribed by Yung Park; Yoonho Kim; Ho-Gi Kim

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 432 KB
• Volume: 90
• Category: Article
• ISSN: 0167-2738
• DOI: 10.1016/s0167-2738(96)00372-4

✦ Synopsis

The structural phase transition in tin-modified zirconium titanate was investigated using high-temperature X-ray, DTA, DSC and electrical conductivity. In a dilute solid solution of Sn (x 5 0.2) in Zr, _,Sn,TiO,, we ascribed to the successive phase transition from normal to incommensurate the break of electrical conductivity, thermal anomalies, and specific heat anomalies occurring at temperatures of 1121"C, 1124°C and 1125°C on the heating run, and at temperatures of 1121°C

1116°C and 1117°C on the cooling run, respectively. Furthermore, the super-lattice reflection intensity was inversely proportional to the Sn content, cooling rate and electrical activation energy. With a composition of Zr,,,Sn, ,TiO,, the phase transition from normal to incommensurate was completely inhibited.