scholarly journals Phonon spectroscopy near phase transition temperatures in multiferroicBiFeO3epitaxial thin films

2010 ◽  
Vol 81 (2) ◽  
Author(s):  
R. Palai ◽  
J. F. Scott ◽  
R. S. Katiyar
Keyword(s):  
Thin Films ◽  
Phase Transition ◽  
Transition Temperatures ◽  
Phase Transition Temperatures

EFFECT OF THE SURFACES ON ORIENTATIONAL PROPERTIES AND PECULIARITIES OF PHASE TRANSITIONS IN THERMOTROPIC NEMATICS

2005 ◽  
Vol 19 (18) ◽  
pp. 2975-2987 ◽  
Author(s):  
ARIF NESRULLAJEV ◽  
FATMA Z. TEPEHAN
Keyword(s):  
Thin Films ◽  
Phase Transition ◽  
Liquid Phase ◽  
Mean Field Theory ◽  
Mean Field ◽  
Eutectic Mixture ◽  
Transition Temperatures ◽  
Isotropic Liquid ◽  
Liquid Phase Transition ◽  
Phase Transition Temperatures

In this work, the effect of thin films on the orientational, thermotropic and optical properties and on the peculiarities of the nematic–isotropic liquid phase transition has been carried out. The planar textures of MBBA+EBBA eutectic mixture on the surfaces coated with Al 2 O 3 and ZrO 2 thin films have been obtained. The optical and thermodynamical parameters of the obtained, oriented textures have been determined. The effect of thin films on the temperature width of heterophase region and on the nematic–isotropic liquid phase transition temperatures has been investigated. The shift of the phase transition temperatures and the change of the temperature width of the heterophase region have been revealed. For the analysis of peculiarities of the nematic–isotropic liquid phase transition and the heterophase regions of this transition, the mean field theory has been used.

scholarly journals Huge impact of compressive strain on phase transition temperatures in epitaxial ferroelectric KxNa1−xNbO3 thin films

2019 ◽  
Vol 114 (23) ◽  
pp. 232905 ◽  
Author(s):  
L. von Helden ◽  
L. Bogula ◽  
P.-E. Janolin ◽  
M. Hanke ◽  
T. Breuer ◽  
...  
Keyword(s):  
Thin Films ◽  
Phase Transition ◽  
Compressive Strain ◽  
Transition Temperatures ◽  
Phase Transition Temperatures ◽  
Huge Impact

scholarly journals Origin of thickness dependence of structural phase transition temperatures in highly strained BiFeO3 thin films

APL Materials ◽  
2016 ◽  
Vol 4 (3) ◽  
pp. 036106 ◽  
Author(s):  
Yongsoo Yang ◽  
Christianne Beekman ◽  
Wolter Siemons ◽  
Christian M. Schlepütz ◽  
Nancy Senabulya ◽  
...  
Keyword(s):  
Thin Films ◽  
Phase Transition ◽  
Structural Phase Transition ◽  
Structural Phase ◽  
Thickness Dependence ◽  
Transition Temperatures ◽  
Bifeo3 Thin Films ◽  
Phase Transition Temperatures ◽  
Highly Strained

scholarly journals Получение, структура и диэлектрические характеристики монокристаллов и тонких пленок Sr-=SUB=-0.61-=/SUB=-Ba-=SUB=-0.39-=/SUB=-Nb-=SUB=-2-=/SUB=-O-=SUB=-6-=/SUB=-

2019 ◽  
Vol 61 (2) ◽  
pp. 376
Author(s):  
А.В. Павленко ◽  
Л.И. Ивлева ◽  
Д.В. Стрюков ◽  
А.П. Ковтун ◽  
А.С. Анохин ◽  
...  
Keyword(s):  
Thin Films ◽  
Phase Transition ◽  
Dielectric Loss ◽  
Single Crystals ◽  
Lattice Dynamics ◽  
Tetragonal Symmetry ◽  
Transition Temperatures ◽  
Dielectric Characteristics ◽  
Phase Transition Temperatures ◽  
Frequency Dependences

AbstractThe structure, lattice dynamics, and dielectric characteristics of Sr_0.61Ba_0.39Nb_2O_6 (SBN-61) single crystals and SBN-61/(001)MgO thin films have been studied. The analysis of temperature and frequency dependences of permittivity and dielectric loss tangents in a range of 10–500 K for a SBN-61 crystal has allowed one to establish the phase transition temperatures. The SBN-61/(001)MgO films are found to possess the tetragonal symmetry, characteristic of a SBN-61 crystal, but their lattice parameters are different from the latter.

Structural and Optical Properties of VO2 Thin Films Grown on Sapphire Substrates

2013 ◽  
Vol 774-776 ◽  
pp. 585-588
Author(s):  
Jian Wei Ma ◽  
Ya Rui Song ◽  
Gang Xu
Keyword(s):  
Thin Films ◽  
Phase Transition ◽  
Optical Properties ◽  
Magnetron Sputtering ◽  
Structural Defects ◽  
Transition Temperatures ◽  
Structural And Optical Properties ◽  
Temperature Reduction ◽  
Sapphire Substrates ◽  
Phase Transition Temperatures

VO2 thin films with thickness from 100 nm down to 2 nm were prepare on C-plane sapphire (0001) substrates by magnetron sputtering and remarkable thickness-dependent structural and optical properties were found. Below 10 nm the films are nonconductive, and their phase transition temperatures are reduced to be much lower than those of the continuous, thick films. Structural defects are believed to be the main reason for this temperature reduction.

scholarly journals Correlation between Magnetic Phase Transition Temperatures and Lattice Distortions in L10 FePtRh Thin Films

2015 ◽  
Vol 79 (9) ◽  
pp. 423-428
Author(s):  
Takashi Hasegawa ◽  
Shiori Kimura ◽  
Takunori Abukawa ◽  
Albert A. Valiullin ◽  
Aleksandr S. Kamzin ◽  
...  
Keyword(s):  
Thin Films ◽  
Phase Transition ◽  
Magnetic Phase Transition ◽  
Magnetic Phase ◽  
Transition Temperatures ◽  
Phase Transition Temperatures ◽  
Lattice Distortions

scholarly journals Thermal, ferroelastic, and structural properties near phase transitions of organic–inorganic perovskite type [NH3(CH2)3NH3]CdBr4 crystals

RSC Advances ◽  
2021 ◽  
Vol 11 (29) ◽  
pp. 17622-17629
Author(s):  
Ae Ran Lim
Keyword(s):  
Phase Transition ◽  
Phase Transitions ◽  
Thermal Behavior ◽  
Structural Properties ◽  
Structural Dynamics ◽  
Transition Temperatures ◽  
Inorganic Perovskite ◽  
Phase Transition Temperatures ◽  
Perovskite Type

We studied the thermal behavior and structural dynamics of [NH3(CH2)3NH3]CdBr4 near phase transition temperatures.

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