Electroelastic fields of the general line source in periodically layered piezoelectric structure

Nowacki, J.; Drabik, Aldona; Alshits, V. I.

doi:10.3233/jae-162079

Cited by 2 publications

(1 citation statement)

References 14 publications

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“…But in these articles only the static case was investigated. In the future, a large number of papers devoted to the study of the rectilinear dislocations motion in a piezoelectric crystals were appeared [11][12][13][14][15][16][17][18][19][20][21][22][23]. In papers [24][25][26][27][28] bending vibrations of dislocations in ferroelectrics were investigated.…”

Section: Introductionmentioning

confidence: 99%

On the Dislocation Contribution to the Dielectric Loss in the Materials with Piezoelectric Properties

Nechaev

Dezhin

2019

MSF

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A variable electric field is applied to a crystal. This field gives rise – through the piezoelectric coupling – to the variable mechanical stresses. Then the dislocations in the crystal will be driven by Peach-Koehler force and will start moving, dissipating the external field energy. Connection of the electric field energy dissipated per unit time with the internal friction is found. The case of resonant loss (Granato-Lucke model) is considered. The loss related to this mechanism to be at frequencies of megahertz range. The relaxation processes being responsible for the Bordoni and Hasiguti peaks also are considered. The use of obtained equations makes it possible to distinguish the dislocation contribution to both dielectric loss and dielectric dispersion and, therefore, to derive additional information about the crystal structure in a sufficiently simple way in terms of only one method.

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Section: Introductionmentioning

confidence: 99%

On the Dislocation Contribution to the Dielectric Loss in the Materials with Piezoelectric Properties

Nechaev

Dezhin

2019

MSF

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The linear response function of a mixed dislocation in ferroelectrics

Dezhin

Nechaev

2019

J. Phys.: Conf. Ser.

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Bending vibrations of a mixed dislocation in a uniaxial ferroelectric are considered, the dislocation line is located along the ferroelectric axis. Based on the complete system of equations describing the vibrations of a ferroelectric crystal with a dislocation, system of equations for the mixed dislocation dynamics in a linear approximation in the dislocation displacement is written. An expression for the Peach–Koehler force acting on the dislocation is obtained, and the linear response function of the mixed dislocation is found.

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Electroelastic fields of the general line source in periodically layered piezoelectric structure

Cited by 2 publications

References 14 publications

On the Dislocation Contribution to the Dielectric Loss in the Materials with Piezoelectric Properties

On the Dislocation Contribution to the Dielectric Loss in the Materials with Piezoelectric Properties

The linear response function of a mixed dislocation in ferroelectrics

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