Influence of domain structure on electro-and piezooptic properties of NH2(CH3)2Al(SO4)2·6H2O crystals

Vlokh, O. G.; Kapustianik, V.; Polovinko, I. I.; Sveleba, S. A.; Andreyev, E. F.; Varikash, V. M.; Shuvalov, L. A.

doi:10.1080/00150199008224419

Cited by 27 publications

(20 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Taking into account the known relation for dispersion of electron part of the refractive index n(ω) [12], one can state a proportionality of the refractive index n to the sum of squares of dipole moments │Dn k │ 2 o f o p t i c a l t r a n s i t i o n s b e i n g t h e p a r a m e t e r s o f c h e m i c a l bonds strength in crystal. Relation (8) shows that refractive index n is inversely proportional to the volume V of crystal unit cell. This peculiarity is also a consequence of known relation for molecular refraction R:…”

Section: It Is Seen From This Figure That Double Index 2ß9 Decreasesmentioning

confidence: 99%

“…The nature of ferroelectric and ferroelastic phases has been drawn from the investigations of dielectric [2][3][4], birefringence [2,5], dilatometric [6], piroelectric [7], electro-and piezooptic [8] properties of DMAAS. Temperature dependencies of (409) refractive indices of DMAAS in the range of ferroelectric phase transition have not been investigated till now.…”

Section: Introductionmentioning

confidence: 99%

“…Crystal of dimethylammonium aluminium sulphate hexahydrate (CH 3 ) 2 NH 2 A1(SO4 ) 2 .6H 2 O (DMAAS) has been widely studied recently by different experimental methods [1][2][3][4][5][6][7][8]. It undergoes ferroelectric phase transition (PT) of second order 2/m → 171 at = 150 K. The transition is associated with ordermg of DMA cations when instead of four bonds averaged in time only two more strong N-H...O bonds appear.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Optical and Dilatometric Properties of (CH₃)₂NH₂Al(SO₄)₂·6H₂O Crystals in Paraelectric and Ferroelectric Phases

et al. 1999

View full text Add to dashboard Cite

Experimental investigation of the thermal linear expansion 1(T) and temperature dependencies of the interference optical path difference D(T) were carried out for (CH 3 )2 NH2Al(SO 4 )2 • 6H2O crystal, in the range of 120-310 K for three crystal physical directions. Decrease in electrostriction coefficients g of crystal was observed on approaching the phase transition point Tc 150 K in ferroelectric phase. Relative temperature changes of the lengthening 51/1 and refractive index δn/(n -1) are of the same order of magnitude. Peculiarities of temperature dependence of dilatometric and optical parameters of (CH3)2NH2Al(SO4)2.6112O testify for qualitative reconstruction of chemical bonds in the crystal when temperature changes in the same phase.

show abstract

Section: It Is Seen From This Figure That Double Index 2ß9 Decreasesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Optical and Dilatometric Properties of (CH₃)₂NH₂Al(SO₄)₂·6H₂O Crystals in Paraelectric and Ferroelectric Phases

et al. 1999

View full text Add to dashboard Cite

show abstract

“…It has been found that this crystal possesses a second order phase transition at temperature T c1 = 152 K [3] from ferroelastic (T > T c1 ) to ferroelectric (T < T c1 )…”

mentioning

confidence: 99%

Phase Transitions and Fundamental Ferroelectric Dispersion in DMAAl_1-xCr_xS Crystals

et al. 2015

View full text Add to dashboard Cite

This paper presents the results of investigations of the temperature dependence of heat capacity and dielectric dispersion in the vicinity of ferroelectric-ferroelastic phase transition of dimethylammonium metal sulphate hexahydrate crystals DMAAl1−xCrxS. In particular, it is shown that the isomorphous substitution of metal ion noticeably changes the temperature of phase transition and parameters of the fundamental ferroelectric dispersion observed around Tc1. These changes are explained in terms of clusters sizes and dynamics in the framework of order-disorder type phase transition mechanism.

show abstract

“…Salts, co-crystals, polymorphs, solvates and hydrates are of general interest. Furthermore, there is a research interest in organic salts because of their brilliant properties [8][9][10][11]. …”

Section: Discussionmentioning

confidence: 99%

Crystal structure of the salt 1,1′-(ethane-1,2-diyl)bis(1,4-diazabicyclo[2.2.2]octan-1-ium) diperchlorate, C₁₄H₂₈N₄(ClO₄)₂

Wen

2017

Zeitschrift Für Kristallographie - New Crystal Structures

View full text Add to dashboard Cite

CCDC no.: 1527555The crystal structure is shown in the figure. Tables 1 and 2 contain details on crystal structure and measurement conditions and a list of the atoms including atomic coordinates and displacement parameters. Source of material Experimental detailsHydrogen atoms were placed in calculated positions and refined as a riding mode, with C-H = 0.96 Å (methylene) with U iso (H) = 1.2 U eq (C). DiscussionOrganic-inorganic crystalline materials can be exploited for many purposes such as nonlinear optical materials, dielectric, piezoelectric, pyroelectric, ferroelectric, semiconductors and other physical properties [4][5][6][7].

show abstract

Influence of domain structure on electro-and piezooptic properties of NH2(CH3)2Al(SO4)2·6H2O crystals

Cited by 27 publications

References 0 publications

Optical and Dilatometric Properties of (CH₃)₂NH₂Al(SO₄)₂·6H₂O Crystals in Paraelectric and Ferroelectric Phases

Optical and Dilatometric Properties of (CH₃)₂NH₂Al(SO₄)₂·6H₂O Crystals in Paraelectric and Ferroelectric Phases

Phase Transitions and Fundamental Ferroelectric Dispersion in DMAAl_1-xCr_xS Crystals

Crystal structure of the salt 1,1′-(ethane-1,2-diyl)bis(1,4-diazabicyclo[2.2.2]octan-1-ium) diperchlorate, C₁₄H₂₈N₄(ClO₄)₂

Contact Info

Product

Resources

About

Influence of domain structure on electro-and piezooptic properties of NH2(CH3)2Al(SO4)2·6H2O crystals

Cited by 27 publications

References 0 publications

Optical and Dilatometric Properties of (CH3)2NH2Al(SO4)2·6H2O Crystals in Paraelectric and Ferroelectric Phases

Optical and Dilatometric Properties of (CH3)2NH2Al(SO4)2·6H2O Crystals in Paraelectric and Ferroelectric Phases

Phase Transitions and Fundamental Ferroelectric Dispersion in DMAAl1-xCrxS Crystals

Crystal structure of the salt 1,1′-(ethane-1,2-diyl)bis(1,4-diazabicyclo[2.2.2]octan-1-ium) diperchlorate, C14H28N4(ClO4)2

Contact Info

Product

Resources

About

Optical and Dilatometric Properties of (CH₃)₂NH₂Al(SO₄)₂·6H₂O Crystals in Paraelectric and Ferroelectric Phases

Optical and Dilatometric Properties of (CH₃)₂NH₂Al(SO₄)₂·6H₂O Crystals in Paraelectric and Ferroelectric Phases

Phase Transitions and Fundamental Ferroelectric Dispersion in DMAAl_1-xCr_xS Crystals

Crystal structure of the salt 1,1′-(ethane-1,2-diyl)bis(1,4-diazabicyclo[2.2.2]octan-1-ium) diperchlorate, C₁₄H₂₈N₄(ClO₄)₂