Crystal Structure of NH3CH2COOHH2PO3in the Ferroelectric Phase

Shikanai, Fumihito; Komukae, M.; Czapla, Z.; Osaka, T.

doi:10.1143/jpsj.71.498

Cited by 31 publications

(41 citation statements)

References 7 publications

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“…The hydrogen bonds linking the phosphite groups are symmetric (with hydrogens equally disordered over two sites). Investigation of symmetry and structure of crystal in the ferroelectric phase (below temperature of the second order phase transition T c = 224.7 K) was recently performed by means of X-ray structure analysis [2] and neutron diffraction study [3]. The space group of this phase is P2 1 .…”

Section: Cooh]mentioning

confidence: 99%

“…Such a model is proposed in this work due to the information obtained last year about the changes in the structure (including the changes in distribution of protons on hydrogen bonds) at the paraelectric-ferroelectric phase transition [2,3]. The symmetry analysis of the order parameters is performed.…”

Section: Cooh]mentioning

confidence: 99%

“…We start from the structural data for localization of hydrogen bonds and equilibrium positions of protons in paraelectric and ferroelectric phases [2,3]. There are four translationally nonequivalent bonds in the unit cell of crystal (the 011−021 and 013−023 bonds as well as other two bonds connected with the mentioned ones by the point symmetry operations).…”

Section: Proton Ordering Modelmentioning

confidence: 99%

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Proton Ordering Model of Phase Transitions in Hydrogen Bonded Ferrielectric Type Systems: The Gpi Crystal

Stasyuk¹,

Czapla²,

Dacko³

et al. 2003

Condens. Matter Phys.

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A microscopic model based on the consideration of the proton ordering is proposed for describing the H-bonded ferroelectric crystalline systems with a complex structure of the hydrogen bond network. The model has been used for the investigation of thermodynamics and dielectric properties of the GPI crystal. The symmetry analysis of the order parameters responsible for the mixed (ferro-and antiferroelectric) nature of ordering is performed within the model. The phase transition into the ferroelectric state is described. Changes in the dielectric susceptibility of the crystal are studied in the presence of the transverse external electric field acting along the caxis. The results of measurements of temperature and field dependences of dielectric permittivity ε c in the paraelectric phase are presented. The microscopic mechanism of the observed effects is discussed based on the comparison of theoretical results and experimental data. A conclusion is made about the significant role of the ionic groups connected by hydrogen bonds in the charge transfer. So they make an important contribution into the polarizability of the GPI crystal along the direction of H-bonded chains.

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Section: Cooh]mentioning

confidence: 99%

Section: Cooh]mentioning

confidence: 99%

Section: Proton Ordering Modelmentioning

confidence: 99%

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Proton Ordering Model of Phase Transitions in Hydrogen Bonded Ferrielectric Type Systems: The Gpi Crystal

Stasyuk¹,

Czapla²,

Dacko³

et al. 2003

Condens. Matter Phys.

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“…At T C = 225 K the crystal undergoes a second-order phase transition from the paraelectric to the ferroelectric state, losing the symmetry plane a [2]. The phase transition is related to ordering of hydrogen bonds in the phosphite chains.…”

Section: Introductionmentioning

confidence: 99%

“…At room temperature the unit cell of this compound is monoclinic (space group P2 1 /a) [1,2]. The crystal lattice is built of long chains of hydrogen-bonded phosphite anions arranged along the c axis and the glycine cations are placed between the chains.…”

Section: Introductionmentioning

confidence: 99%

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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Lattice dynamics study of the ferroelectric glycinium hydrogenphosphite (GPI) crystal

Shchur

Kityk

2014

Physica Status Solidi (b)

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Lattice dynamics simulation of NH3CH2COOH·H2PO3 crystal is performed in paraelectric P21/a and ferroelectric P21 phases within the semi‐empirical model. The detailed assignment of phonon modes is done in Brillouin zone centre. Density of phonon states and partial density of states of all constituent atoms are calculated in both structural phases. The O2 and H2 atoms in O2–H2⋯O2 hydrogen bonds presumably play an essential role in the mechanism of the phase transition.

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Crystal Structure of NH₃CH₂COOHH₂PO₃in the Ferroelectric Phase

Cited by 31 publications

References 7 publications

Proton Ordering Model of Phase Transitions in Hydrogen Bonded Ferrielectric Type Systems: The Gpi Crystal

Proton Ordering Model of Phase Transitions in Hydrogen Bonded Ferrielectric Type Systems: The Gpi Crystal

Piezoelectric properties of GPI crystals

Lattice dynamics study of the ferroelectric glycinium hydrogenphosphite (GPI) crystal

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