Dielectric and mechanical properties of PZN-PFN-BZN ternary system

Author： Jain M. Garg A. Tripathi A.K. Goel T.C.

ISSN： 0022-2461

Source： Journal of Materials Science, Vol.37, Iss.4, 2002-02, pp. : 807-811

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Abstract

The Ferroelectric relaxor ternary system 0.5PZN-(0.5 - x)PFN-xBZN was prepared using the columbite precursor method. The stability of the perovskite phase was studied as a function of BZN content in the system. It was observed that BZN is a good stabilizer of perovskite phase because of the high value of electronegativity difference between its cation and anion. It has also been observed that addition of BZN increases the dielectric maxima peak value and decrease the Curie temperature of the ceramics. The ternary composition 0.5PZN-0.425PFN-0.075BZN has been identified for MLCs applications. It has a T_c of around room temperature with a peak dielectric constant ≅6400 and tanδ ∼ 0.05. The mechanical properties of relaxor materials have also been studied and reported.