Structure and mechanism of ferroelectric phase transition in tris (dimethylammonium)-nonachlorodiantimonate (III)

Gdaniec, Мaria; Kosturkiewicz, Z.; Jakubas, R.; Sobczyk, L.

doi:10.1080/00150198808223224

Cited by 59 publications

(23 citation statements)

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“…The method of single crystal preparation of [NH 2 (CH 3 ) 2 ] 3 Sb 2 Cl 9 was described earlier [2]. The crystals used for the dielectric measurements were cut perpendicular to the c-axis, covered with silver paste, and placed between two parallel silver plates.…”

Section: Methodsmentioning

confidence: 99%

“…The X-ray investigation [2] has shown that at room temperature the DMACA crystal is of monoclinic symmetry (space group P 2 1 /c, point group 2/m). The crystal structure is formed by rigid two-dimensional layers of [Sb 2 Cl 3− 9 ] n polyanions with large vacancies and two types of crystallographic non-equivalent disordered dimethylammonium cations (DMA(1) and DMA (2)). The cations form relatively weak hydrogen bonds of the N-H. .…”

Section: Introductionmentioning

confidence: 99%

“…• reorientation), while the cations DMA(2) are located in the general position between the layers [2]. At 242 K the DMACA crystal undergoes continuous ferroelectric phase transition from P 2 1 /c to P c [3].…”

Section: Introductionmentioning

confidence: 99%

“…On the basis of the X-ray [2,3] dielectric dispersion [4] and NMR [5] studies DMACA was classified as one of the most typical ferroelectrics showing the order-disorder phase transition, where DMA cations are treated as the order--disorder unit. However, the IR and Raman spectroscopic studies have indicated the importance of N-H. .…”

Section: Introductionmentioning

confidence: 99%

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The Dielectric Studies of Ferroelectric [NH₂(CH₃)₂]₃Sb₂Cl₉Crystals under Moderate Pressure

et al. 2007

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The effect of pressure on the dielectric properties of [NH 2 (CH 3 ) 2 ] 3 Sb 2 Cl 9 crystal was analyzed for a few values of hydrostatic pressure within the range from 0.1 MPa to 300 MPa and for temperatures from the range of 220-350 K. The measuring frequency was 1 kHz.The pressure-temperature phase diagram obtained was nonlinear. The temperature dielectric permittivity anomalies related to the paraelectric-ferroelectric phase transition temperature (T c ) gradually increase up to 66 MPa and then decrease with subsequent increase in pressure. The character of the temperature dielectric permittivity anomalies, typical of the continuous ferroelectric transition, remains unchanged with increasing pressure. Additionally, the pressure dependences of the Curie-Weiss constants for the crystal in paraelectric (C+) and ferroelectric (C − ) phases were evaluated and discussed. The results indicated a complex mechanism of the ferroelectric phase transition.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Dielectric Studies of Ferroelectric [NH₂(CH₃)₂]₃Sb₂Cl₉Crystals under Moderate Pressure

et al. 2007

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“…The reorientations of the alkylammonium cations are found to play a dominant role in the mechanism of numerous "order-disorder" phase transitions [1][2][3]. [NH 2 (CH 3 ) 2 ] 3 Sb 2 Cl 9 (DMACA) crystallizes at room temperature (RT) in the monoclinic symmetry with the space group P 2 1 /c [4]. The RT structure consists of two-dimensional layer structure of (Sb 2 Cl 3− 9 ) n anions and two sets of nonequivalent dimethylammonium cations (DMA).…”

Section: Introductionmentioning

confidence: 99%

Ferroelectric Phase Transition in DC Electric Field in [NH₂(CH₃)₂]₃Sb₂Cl₉Crystals

Dziedzic

Μróz

2007

Acta Phys. Pol. A

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Crystal Structure, Thermal and Electric Behaviour of [(CH3)2NH2]3[As2Cl9] and [(CH3)2NH2][AsOCl2]

Wojtaś

Ciunik

Bator

et al. 2002

Z. anorg. allg. Chem.

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Single crystals of the organicϪinorganic arsenate(III): [(CH 3 ) 2 NH 2 ] 3 [As 2 Cl 9 ] and [(CH 3 ) 2 NH 2 ][AsOCl 2 ] have been grown from aqueous hydrochloric acid solution. The crystals [(CH 3 ) 2 NH 2 ] 3 [As 2 Cl 9 ] have been investigated by XϪray diffraction (at 253 K), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), dilatometric and dielectric methods. They undergo two structural phase transitions of first order at 228/235 and 298/307 K (on cooling/heating), respectively, which are classified as an "orderϪdisorder" type. The trigonal [(CH 3 ) 2 NH 2 ] 3 [As 2 Cl 9 ] structure (at 253 K, intermediate phase (II)) refined in the space group R3c, consists of isolated Kristallstruktur, thermisches und elektrisches Verhalten von [(CH 3 ) 2 NH 2 ] 3 [As 2 Cl 9 ] und [(CH 3 ) 2 NH 2 ][AsOCl 2 ] Inhaltsübersicht. Einkristalle der organisch-anorganischen Arsenate(III): [(CH 3 ) 2 NH 2 ] 3 [As 2 Cl 9 ] und [(CH 3 ) 2 NH 2 ][AsOCl 2 ] wurden aus Salzsäure-Lösungen erhalten. Die Kristallstruktur von [(CH 3 ) 2 NH 2 ] 3 [As 2 Cl 9 ] wurde bei 253 K mit Hilfe von Röntgenbeugung ermittelt und durch Differential-Raster-Kalorimetrie (DSC), Thermogravimetrie (TGA), dilatometrische und dielektrische Methoden charakterisiert. Die Kristalle unterliegen beim Abkühlen bzw. beim Erhitzen zweier struktureller Phasenübergänge erster Ordnung bei 228/235 und 298/307 K, die vom "Ordnungs-Fehlordnungstyp" sind. [As 2 Cl 9 ] 3Ϫ bioctahedral units and dimethylammonium cations hydrogen bonded to the bridging Cl atoms of the anions. The crystals of [(CH 3 ) 2 NH 2 ][AsOCl 2 ] at 100 K are orthorhombic, space group Cmca. The structure contains oneϪdimensional chains formed by strong distorted [AsO 2 Cl 4 ] octahedra. The dimethylammonium cations reveal distinct disorder.

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Structure and mechanism of ferroelectric phase transition in tris (dimethylammonium)-nonachlorodiantimonate (III)

Cited by 59 publications

References 4 publications

The Dielectric Studies of Ferroelectric [NH₂(CH₃)₂]₃Sb₂Cl₉Crystals under Moderate Pressure

The Dielectric Studies of Ferroelectric [NH₂(CH₃)₂]₃Sb₂Cl₉Crystals under Moderate Pressure

Ferroelectric Phase Transition in DC Electric Field in [NH₂(CH₃)₂]₃Sb₂Cl₉Crystals

Crystal Structure, Thermal and Electric Behaviour of [(CH3)2NH2]3[As2Cl9] and [(CH3)2NH2][AsOCl2]

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Structure and mechanism of ferroelectric phase transition in tris (dimethylammonium)-nonachlorodiantimonate (III)

Cited by 59 publications

References 4 publications

The Dielectric Studies of Ferroelectric [NH2(CH3)2]3Sb2Cl9Crystals under Moderate Pressure

The Dielectric Studies of Ferroelectric [NH2(CH3)2]3Sb2Cl9Crystals under Moderate Pressure

Ferroelectric Phase Transition in DC Electric Field in [NH2(CH3)2]3Sb2Cl9Crystals

Crystal Structure, Thermal and Electric Behaviour of [(CH3)2NH2]3[As2Cl9] and [(CH3)2NH2][AsOCl2]

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The Dielectric Studies of Ferroelectric [NH₂(CH₃)₂]₃Sb₂Cl₉Crystals under Moderate Pressure

The Dielectric Studies of Ferroelectric [NH₂(CH₃)₂]₃Sb₂Cl₉Crystals under Moderate Pressure

Ferroelectric Phase Transition in DC Electric Field in [NH₂(CH₃)₂]₃Sb₂Cl₉Crystals