scholarly journals Формирование регулярных слоистых структур при твердотельных фазовых переходах с изменением концентрации

2020 ◽  
Vol 62 (8) ◽  
pp. 1244
Author(s):  
А.А. Чеврычкина ◽  
Н.М. Бессонов ◽  
А.Л. Корженевский
Keyword(s):  
Phase Transition ◽  
Solid State ◽  
Temperature Gradient ◽  
Capillary Wave ◽  
Wave Model ◽  
The Self ◽  
One Dimensional ◽  
The One

The self-oscillation dynamic of an interface is calculated in the framework of the one-dimensional capillary-wave model. The parameters of a periodic layered impurity microstructure are obtained. This microstructure arises as a result of a solid-state phase transition with a change in concentration that occurs when a moving temperature gradient is applied.

scholarly journals Условия формирования примесных сверхструктур при фазовых переходах

2019 ◽  
Vol 61 (10) ◽  
pp. 1904
Author(s):  
А.А. Чеврычкина ◽  
Н.М. Бессонов ◽  
А.Л. Корженевский
Keyword(s):  
Solid State ◽  
Temperature Gradient ◽  
Phase Transformations ◽  
Impurity Concentration ◽  
Average Velocity ◽  
Capillary Wave ◽  
Wave Model ◽  
Analytical Form ◽  
Spatial Period ◽  
Explicit Formulas

The aim of the work is to present the conditions necessary for the appearance of layered periodic impurity superstructures as a result of solid-state phase transformations accompanied by a change in the impurity concentration in the general analytical form. Explicit formulas for the region of the values of the temperature gradient and the average velocity of the interphase boundary are obtained in the framework of the capillary-wave model. A formula is derived for the spatial period of the impurity superstructure, the appearance of which is due to these oscillations

Spin-Wave Spectrum in the Sinusoidal Superlattice with Amplitude and Phase Inhomogeneities

2014 ◽  
Vol 215 ◽  
pp. 385-388
Author(s):  
Valter A. Ignatchenko ◽  
Denis S. Tsikalov
Keyword(s):  
Spin Wave ◽  
Density Of States ◽  
Wave Spectrum ◽  
The Self ◽  
One Dimensional ◽  
Consistent Approximation ◽  
Self Consistent ◽  
Greens Function ◽  
The One ◽  
Spin Wave Spectrum

Effects of both the phase and the amplitude inhomogeneities of different dimensionalities on the Greens function and on the one-dimensional density of states of spin waves in the sinusoidal superlattice have been studied. Processes of multiple scattering of waves from inhomogeneities have been taken into account in the self-consistent approximation.

Neutron-Scattering Study of the Structural Phase Transition in the One-Dimensional ConductorK2Pt(CN)4Br0.3·3D2O

1974 ◽  
Vol 32 (15) ◽  
pp. 836-839 ◽  
Author(s):  
B. Renker ◽  
L. Pintschovius ◽  
W. Gläser ◽  
H. Rietschel ◽  
R. Comès ◽  
...  
Keyword(s):  
Phase Transition ◽  
Neutron Scattering ◽  
Structural Phase Transition ◽  
Structural Phase ◽  
One Dimensional ◽  
Scattering Study ◽  
Neutron Scattering Study ◽  
The One

The luminescence attenuation in the solid state by fluoride anion entrapped in the one-dimensional Zn(II) dioximate and mononuclear Cd(II) dioxime compounds

Polyhedron ◽  
2016 ◽  
Vol 109 ◽  
pp. 107-114 ◽  
Author(s):  
Eduard B. Coropceanu ◽  
Lilia Croitor ◽  
Anatolii V. Siminel ◽  
Yurii Chumakov ◽  
Marina S. Fonari
Keyword(s):  
Solid State ◽  
Fluoride Anion ◽  
One Dimensional ◽  
The One

One-dimensionality and neutral-to-ionic transition of some mixed-stack charge-transfer complexes

2002 ◽  
Vol 12 (9) ◽  
pp. 357-360
Author(s):  
M. Buron ◽  
E. Collet ◽  
M. H. Lemée-Cailleau ◽  
H. Cailleau ◽  
T. Luty ◽  
...  
Keyword(s):  
Phase Transition ◽  
Charge Transfer ◽  
Charge Transfer Complexes ◽  
X Ray Diffraction ◽  
One Dimensional ◽  
Giant Dielectric ◽  
Ionic Transition ◽  
The One ◽  
Ct Complexes ◽  
Dimerization Process

Mixed-stack charge-transfer (CT) complexes undergoing the neutral-ionic (N-I) phase transition are molecular materials formed of stacks where electron donor (D) and acceptor (A) molecules regularly alternate. In the N phase, the CT is low and molecules are situated on inversion centers, while in the I phase, the increase of CT is accompanied by a lattice distortion (dimerization process and symmetry breaking). The one-dimensional (1D) architecture triggers the chain multistability by stabilizing lattice-relaxed (LR)-CT excitations ...D° A° D° A° $(D^+A^-)(D^+A^-)(D^+A^-)$ Do A" D° A° D°... These 1D nano-scale objects are at the heart of the equilibrium N-I phase transition and govern the fascinating physical properties such as giant dielectric response or photo-induced phase transformations. In this contribution, the 1D character of these critical excitations will be demonstrated by direct observation using high resolution X-Ray diffraction.

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