The effect of heat treatment on the physical properties of the fast ion conductor Bi8Pb5O17

✍ Scribed by M.G. Fee; N.M. Sammes; G. Tompsett; T. Stoto; A.M. Cartner

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 550 KB
• Volume: 95
• Category: Article
• ISSN: 0167-2738
• DOI: 10.1016/s0167-2738(96)00546-2

✦ Synopsis

Bi,Pb,O,, shows a tetragonal (/?,) to body centred cubic (/?) transition, via an intermediate (+), at 590°C. The p phase has high ionic conductivity, but reverts to & when cooled. This paper describes how 0 can be stabilized to room temperature. We have used a range of physical and spectroscopic probes to show that & is stabilized at room temperature when the material is quenched from above 590°C and q5 is stabilized when cooled from lower temperatures. We have compared the physical and electrical properties of these phases and discuss the possible advantage of stabilising the 4 intermediate when fabricating devices from this material.