Predominant factors affecting the dielectric and piezoelectric properties of bismuth-containing complex perovskite solid solution |
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Authors: | R Wang Y Shimojo M Itoh |
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Institution: | a Nanoelectronics Research Institute, National Institute of Advanced Industrial Science and Technology, Tsukuba Central 2, 1-1-1 Umezono, Tsukuba 305-8568, Japan b Materials and Structures Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori, Yokohama 226-8503, Japan |
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Abstract: | To study the factors affecting the dielectric and piezoelectric properties of bismuth-containing complex perovskites, the solid solution (1−x)Pb(Mg1/3Nb2/3)O3-xBi(Mg2/3Nb1/3)O3 was prepared by the solid state reaction method and its dielectric and piezoelectric properties were investigated. It is found that (1) at room temperature, the nonlinearity of the DE-loop for Pb(Mg1/3Nb2/3)O3 is completely suppressed at a rather low x (<5%); (2) dielectric constant versus temperature curves deviate from the Curie-Weiss law at a temperature Td much higher than the dielectric constant peak temperature Tm and Tm−Td decreases considerably with increasing x; and (3) frequency dispersion ΔTm=Tm (1 MHz)−Tm (10 kHz) increases with increasing x. Possible factors responsible for the variation of the dielectric and piezoelectric properties with x are discussed. |
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Keywords: | 77 22 &minus d 77 65 &minus j 77 84 &minus s |
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