Dielectric Investigation of Glycine Phosphite Crystal

Czukwinski, R.; Czapla, Z.; Styrkowiec, R.

doi:10.12693/aphyspola.100.897

Cited by 3 publications

(2 citation statements)

References 19 publications

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“…A disagreement of the theoretical curves with the experimental data in the low-frequency region in the ferroelectric phase is connected with an essential role of domain processes in this region [16], which are not taken into account in the proposed theory.…”

Section: -7mentioning

confidence: 78%

“…From figures 3-5 one can see that the proposed theoretical model satisfactorily describes the experimental data for the frequency and temperature dependences ε ′ 22 (ν, T) and ε ′′ 22 (ν, T) of GPI crystal in the paraelectric phase, with the exception of [10], and less satisfactorily in the ferroelectric phase. A disagreement of the theoretical curves with the experimental data in the low-frequency region in the ferroelectric phase is connected with an essential role of domain processes in this region [16], which are not taken into account in the proposed theory. Let us discuss the transverse dynamic characteristics.…”

Section: -7mentioning

confidence: 78%

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Dynamic properties of NH_3CH_2COOH·H_2PO_3 ferroelectric

Zachek¹,

Левицкий²,

Vdovych³

et al. 2018

Condens. Matter Phys.

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Using a modified pseudospin model of NH 3 CH 2 COOH·H 2 PO 3 ferroelectric taking into account the piezoelectric coupling with strains ε i , ε 4 , ε 5 and ε 6 within Glauber method in two-particle claster approximation, we have calculated components of dynamic dielectric permittivity tensor and relaxation times of the model. At the proper set of theory parameters, frequency and temperature dependences of the components of permittivity and temperature dependences of the relaxation times are studied. A satisfactory agreement of the theoretical results with experimental data for longitudinal permittivity is obtained.

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Section: -7mentioning

confidence: 78%

Section: -7mentioning

confidence: 78%

Dynamic properties of NH_3CH_2COOH·H_2PO_3 ferroelectric

Zachek¹,

Левицкий²,

Vdovych³

et al. 2018

Condens. Matter Phys.

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Piezoelectric properties of GPI crystals

Wiesner¹

2003

Physica Status Solidi (b)

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It is found that the piezoelectric properties of glycine phosphite (GPI) were preserved up to 264 K, which contradicts the presence of a symmetry centre phase above T C . The resonance frequency jump at the phase transition was ~0.15%, which is more than ten times smaller when compared to the sound velocity jump. In order to explain such persistent behaviour of the sample, a complementary measurement of the spontaneous polarisation P s was made. Not only was P s observed up to 270 K, but two kinds of polarisation were distinguished: the first disappeared at ~226 K, and the second was present up to 270 K.

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