An estimation of the quadratic electrostrictive coefficients in LiCl, LiBr, NaI, KF and RbF crystals

Kucharczyk, W.

doi:10.1524/zkri.1987.181.14.109

Zeitschrift Für Kristallographie - Crystalline Materials

1987

DOI: 10.1524/zkri.1987.181.14.109

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An estimation of the quadratic electrostrictive coefficients in LiCl, LiBr, NaI, KF and RbF crystals

W. Kucharczyk¹

Abstract: An empirical connection between the quadratic electrostrictive coefficients and the relative change in the bond length is reported. Employing the empirical rule an attempt is made to predict the electrostrictive coefficients in LiCl, LiBr, Nal, KF and RbF.

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2022

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Generalized relation between electromechanical responses at fixed voltage and fixed electric field

et al. 2022

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We present a general relation between the electromechanical couplings of infinitesimal strain and electric field to arbitrary order, measured at fixed voltage and at fixed electric field. We show that the improper response at fixed field can be written as the strain derivative of the nth-order susceptibility tensor, and the proper response at fixed voltage drop can be written as the response at fixed field plus corrections for dilations and 90 • rotations induced by strain. Our theory correctly reproduces the proper piezoelectric response and we go beyond with the electrostrictive response. We present first-principles calculations of the improper electrostrictive response at fixed field, and illustrate how the correction is used to obtain the proper response at fixed voltage. This distinction is of high importance given the recent interest in giant electrostrictors exhibiting electromechanical responses as large as the piezoelectric ones.

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Generalized relation between electromechanical responses at fixed voltage and fixed electric field

et al. 2022

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An estimation of the quadratic electrostrictive coefficients in LiCl, LiBr, NaI, KF and RbF crystals

Abstract: An empirical connection between the quadratic electrostrictive coefficients and the relative change in the bond length is reported. Employing the empirical rule an attempt is made to predict the electrostrictive coefficients in LiCl, LiBr, Nal, KF and RbF.

Cited by 1 publication

References 10 publications

Generalized relation between electromechanical responses at fixed voltage and fixed electric field

Generalized relation between electromechanical responses at fixed voltage and fixed electric field

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