1. Effect of Pb Volatilization on Dielectric Properties of 0.77PbMg[sub 1/3](Nb[sub 0.9]Ta[sub 0.1])[sub 2/3]O[sub 3]-0.23PbTiO[sub 3].
- Author
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Zhang, C., Wang, J.T., Qian, M.Q., Chen, T.P., Akujobi, I., and Ferrell, R.E.
- Subjects
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LEAD , *DIELECTRICS , *SINTERING , *X-ray diffraction - Abstract
Lead magnesium niobate-lead titanate (PMN-PT) is an intriguing candidate for applications in many electronic devices such as multi-layer capacitors, electro-mechanical transducers etc. because of its high dielectric constant, low dielectric loss and high strain near the Curie temperature. As an extension of our previous work on Ta-doped PMNT-PT aimed at optimizing the performance and reducing the cost, this paper focuses on the effect of Pb volatilization on the dielectric properties of 0.77Pb(Mg[sub 1/3](Nb[sub 0.9]Ta[sub 0.1])[sub 2/3])O[sub 3]-0.23PbTiO[sub 3]. The dielectric constant and loss of the samples are measured at different frequencies and different temperatures. The phase purity of this compound is determined by X-ray diffraction pattern. It is found that the volatilization during sintering does influence the phase formation and dielectric properties. The best condition is sintering with 0.5 g extra PbO around a 4 g PMNT-PT sample. [ABSTRACT FROM AUTHOR]
- Published
- 2003
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