Domain structure and phase boundaries in ferroelastics

Dudnik, E. F.; Shuvalov, L. A.

doi:10.1080/00150198908217583

Cited by 36 publications

(11 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…which determines the intersection surface of two the third order surfaces, described by b ijk (S + 1 ) (3) and b ijk (S ± 4 ) (3) tensors of two neighbouring OS's and therefore should define the piezoelectric walls orientation [12]. The substitution of the SPCT's values gives:…”

Section: Resultsmentioning

confidence: 99%

Twinning in Paratellurite Crystals

Akimov¹,

Alkhimov²,

Gorbenko³

et al. 2007

Ferroelectrics

Self Cite

View full text Add to dashboard Cite

Using optical-polarized method the twinning of paratellurite TeO 2 crystals has been observed. This twinning may be explained if to suggest the existence of hypothetical prophase with the cubic symmetry m3m. It is determined that TeO 2 crystals may possess three ferroelastic states S 1 , S 2 , S 3 , which differ by the 4-fold axis directions. Every ferroelastic state may contain two ferroelastoelectric states which differ by the components of the spontaneous piezoelectric coefficient tensor (SPCT). If the SPCT's differ by the polarization directions only but do not differ by spontaneous deformations, then such ferroelastoelectric states form dauphine twins. If the SPCT's differ by the polarization directions and spontaneous deformations, then such ferooelastoelectric states form Brazilian twins.

show abstract

Section: Resultsmentioning

confidence: 99%

Twinning in Paratellurite Crystals

Akimov¹,

Alkhimov²,

Gorbenko³

et al. 2007

Ferroelectrics

Self Cite

View full text Add to dashboard Cite

show abstract

“…The interaction energy of ferroelastic domains with the external mechanical stress is well described by thermodynamical potential energy density A@ in each domain by (Dudnik and Shuvalov, 1989):…”

Section: Domain Movementmentioning

confidence: 99%

Studies on domain structures and structural phase transition of (NH₄)₃H(SeO₄)₂Crystal

Chen

1997

Phase Transitions

View full text Add to dashboard Cite

The twinning in (NH&H(SeO& crystals grown from the aqueous solution has been studied, using an optical polarizing microscope. Many different morphologies of twinned crystals are found. Up to twelve domains were observed in the sample crystals. They are identified as ferroelastic domains in the room-temperature phase. Four types of domain boundaries are found. The orientations of the domains and the domain walls are analysed by the elastic strain tensor and the strain-compatibility condition. The res_ults indicate that the transition is well described by the para-and ferro-elastic phase transition 3mF1. Movement of the domains under external forces was also studied. The crystal switched state to minimize its elastic potential energy.

show abstract

“…The successive transitions to ferroelastic phases lead to either monoclinic (C2/m or C2/c) or triclinic (P 1) systems and are evidenced by anomalies in the Raman spectra [7,8], a dielectric susceptibility [6], X-ray studies [9], heat capacity measurements [10], electron paramagnetic resonance (EPR) [11][12][13] and optical microscopy studies [14][15][16]. Substantial differences in temperatures of the trigonalto-monoclinic phase transitions observed in TDM correlate with the A þ alkali ion atomic number [6].…”

Section: Introductionmentioning

confidence: 99%

Phase transitions in K₁₋_xRb_xSc(MoO₄)₂solid solutions

Zapart

Maternicki

et al. 2010

Phase Transitions

View full text Add to dashboard Cite

K 1Àx Rb x Sc(MoO 4 ) 2 single crystals doped with Cr 3þ were studied by electron paramagnetic resonance (EPR), X-ray photoelectron spectroscopy and optical microscopy. It has been found that the EPR spectra in solid solutions for x 0.2 are inhomogeneously broadened due to the random occupation of the next nearest-neighbour cation sites K þ and Rb þ . The spin-Hamiltonian parameters describing the room-temperature EPR spectra of Cr 3þ in K 1Àx Rb x Sc(MoO 4 ) 2 are calculated. The behaviour of the EPR spectra versus temperature reveals the existence of structural phase transitions in these crystals. The results show that a substitution of K þ by Rb þ suppresses the transition temperatures. The optical investigations carried out under the polarizing microscope have shown a ferroelastic nature of these transformations.

show abstract

Domain structure and phase boundaries in ferroelastics

Cited by 36 publications

References 9 publications

Twinning in Paratellurite Crystals

Twinning in Paratellurite Crystals

Studies on domain structures and structural phase transition of (NH₄)₃H(SeO₄)₂Crystal

Phase transitions in K₁₋_xRb_xSc(MoO₄)₂solid solutions

Contact Info

Product

Resources

About

Domain structure and phase boundaries in ferroelastics

Cited by 36 publications

References 9 publications

Twinning in Paratellurite Crystals

Twinning in Paratellurite Crystals

Studies on domain structures and structural phase transition of (NH4)3H(SeO4)2Crystal

Phase transitions in K1−xRbxSc(MoO4)2solid solutions

Contact Info

Product

Resources

About

Studies on domain structures and structural phase transition of (NH₄)₃H(SeO₄)₂Crystal

Phase transitions in K₁₋_xRb_xSc(MoO₄)₂solid solutions