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In this study, the structure and piezoelectric properties of Ca 1- x Sr x Bi 4 Ti 4 O 15 ( x =0–1) ceramics are investigated. These compounds are prepared by the conventional ceramic technique and the uniform orthorhombic structure is formed. The measurement of piezoelectric properties shows that the piezoelectric constant ( d 33 ) has a peak when x =0.4, whereas many other properties changed with x in accordance with the average properties of CaBi 4 Ti 4 O 15 and SrBi 4 Ti 4 O 15 . The mechanism of the regularity of piezoelectric constant ( d 33 ) is discussed in relation to the investigation of the polarization-electric field loop and structural change with different x . The temperature coefficients of dielectric constants and resistivity with x are also measured. The results show that the compound with x =0.4 has excellent integrated properties and is beneficial to higher temperature applications.
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Zheng et al. (2002) studied this question.
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