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Piezoelectric and Dielectric Properties of MnO2-Modified Bi(Mg1/2Ti1/2)O3–PbTiO3

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Abstract:

We reported that Bi(Mg1/2Ti1/2)O3–PbTiO3 (BMT-PT) systems had high piezoelectric, dielectric performances and high Curie temperature. The phase structure of the system was identified by X-ray diffraction analysis. The piezoelectric and dielectric properties were also investigated. The results showed that 0.6BMT–0.4PT (Mg/Ti = 0.5:0.5) with 1mol% MnO2 was the optimum composition which exhibited the highest curie temperature Tc = 511 °C and the stable temperature of dielectric loss reached to 500 °C. Further, the dielectric and piezoelectric properties of this composition were given as follows:kp = 22.5%;εr= 734; room temperature d33 = 131.3 pC/N; tanδ = 1.96%.

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Advanced Materials, ICAMMP 2011 View Preview

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Periodical:

Advanced Materials Research (Volumes 415-417)

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1983-1987

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https://doi.org/10.4028/www.scientific.net/AMR.415-417.1983

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December 2011

Authors:

Xiao Na Wang, Qing Chi Sun, Wei Bing Ma, Tao Liu, Yong Zhang, Hai Quan Liu

Keywords:

Curie Temperature, Dielectric Property, MnO2, Perovskite, Piezoelectric Properties

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