Lowering of relaxor transition temperature in lead-based perovskites under pressure

Ramasesha, Sheela K and Rao, Radhika MV and Singh, AK and Umarji, AM (1996) Lowering of relaxor transition temperature in lead-based perovskites under pressure. Electrochimica Acta, 41 (17). pp. 1141-1147.

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Abstract

The dielectric constants of lead iron niobate (PFN) and 40% lead zinc niobate (PZN) added to lead iron niobate (PFN0.6-PZN0.4) have been measured as a function of pressure up to 6 GPa under isothermal conditions between room temperature and 348 K. The relaxor transition temperature measured at 1 kHz excitation frequency varies at a rate -24.5 K/GPa for PFN and at a rate of -28.8 K/GPa for the PFN0.6-PZN0.4 composition.

Item Type: Journal Article
Uncontrolled Keywords: Ceramic materials; Composition; Dielectric properties; Electric variables measurement; Ferroelectric materials; Permittivity; Phase transitions; Pressure effects; Structure (composition); Isothermal conditions; Lead based perovskite; Lead iron niobate; Lead zinc niobate; Relaxor transition temperature; Lead compounds;
Subjects: CHEMISTRY AND MATERIALS > Metals and Metallic Materials
Division/Department: Other, Other, Materials Science Division, Other
Depositing User: Mr Vijaianand SK
Date Deposited: 07 Jan 2005
Last Modified: 24 May 2010 09:38
URI: http://nal-ir.nal.res.in/id/eprint/271

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