Imperfection of the clustered perovskite structure, phase transitions, and magnetoresistive properties of ceramic La0.6Sr0.2Mn1.2 − x Ni x O3 ± δ (x = 0–0.3)

2012 ◽  
Vol 54 (4) ◽  
pp. 767-777 ◽  
Author(s):  
A. V. Pashchenko ◽  
V. P. Pashchenko ◽  
V. K. Prokopenko ◽  
A. G. Sil’cheva ◽  
Yu. F. Revenko ◽  
...  
Keyword(s):  
Phase Transitions ◽  
Perovskite Structure ◽  
Structure Phase

Jahn-Teller Phase Transitions in Non-Stoichiometric Oxides with Perovskite Structure: Effect of Mechanical Activation

2013 ◽  
Vol 334-335 ◽  
pp. 353-358
Author(s):  
Anatoly Yakovlevich Fishman ◽  
Nickolai Tkachev
Keyword(s):  
Phase Transitions ◽  
Mechanical Activation ◽  
Perovskite Structure ◽  
Microscopic Description ◽  
Oxide Systems ◽  
Teller Transition ◽  
Structure Phase ◽  
Jahn Teller ◽  
Nanostructural State ◽  
Theoretical Results

Structure phase transitions in nonstoichiometry oxides with perovskite structure were considered. The microscopic description of cooperative Jahn-Teller transition was suggested and the effects caused by mechanical activation of oxide systems (their conversion into nanostructural state, acceleration of oxidation-renewal reactions and immiscibility) were analized. The correspondence of the theoretical results to the data of experiment on phase states of mechanically activated oxide NdMnO3is shown.

Structure, phase transitions and molecular dynamics in ferroelastic crystal pyrrolidinium hexachloroantimonate(V), [C4H8NH2][SbCl6]

2005 ◽  
Vol 7 (4) ◽  
pp. 381-390 ◽  
Author(s):  
Ryszard Jakubas ◽  
Beata Bednarska-Bolek ◽  
Jacek Zaleski ◽  
Wojciech Medycki ◽  
Krystyna Hołderna-Natkaniec ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Phase Transitions ◽  
Structure Phase

scholarly journals Band structure, phase transitions, and semiconductor analogs in one-dimensional solid light systems

2009 ◽  
Vol 80 (6) ◽  
Author(s):  
James Quach ◽  
Melissa I. Makin ◽  
Chun-Hsu Su ◽  
Andrew D. Greentree ◽  
Lloyd C. L. Hollenberg
Keyword(s):  
Phase Transitions ◽  
Band Structure ◽  
One Dimensional ◽  
Structure Phase

Effects of complex additives on structure, phase transitions and dielectric properties of BSPT ceramics

2014 ◽  
Author(s):  
E. D. Politova ◽  
N. V. Golubko ◽  
G. M. Kaleva ◽  
A. V. Mosunov ◽  
S. Yu. Stefanovich ◽  
...  
Keyword(s):  
Phase Transitions ◽  
Dielectric Properties ◽  
Structure Phase

scholarly journals A new model for phase transitions due to octahedra rotations in perovskite structure

1980 ◽  
Vol 25 (1) ◽  
pp. 447-450 ◽  
Author(s):  
M. Rousseau ◽  
A. Bulou ◽  
C. Ridou ◽  
A. W. Hewat
Keyword(s):  
Phase Transitions ◽  
Perovskite Structure ◽  
New Model

Electrical Conductivity and Phase Transitions in Ferroelectric Solid Solutions Li0.17Na0.83ТауNb1-уO3 (y = 0 – 0.5) in High Pressure

2020 ◽  
Vol 310 ◽  
pp. 6-13
Author(s):  
Vadim V. Efremov ◽  
Mikhail N. Palatnikov ◽  
Yuriy V. Radyush ◽  
Olga B. Shcherbina
Keyword(s):  
Solid Solution ◽  
Electrical Conductivity ◽  
High Pressure ◽  
Phase Transitions ◽  
Solid Solutions ◽  
Synthesis Method ◽  
Ferroelectric Ceramic ◽  
Synthesis Temperature ◽  
Structure Phase ◽  
Ceramic Solid Solution

Ferroelectric ceramic solid solutions LixNa1-xTayNb1-yO3 (х = 0.17; у = 0 – 0.5) with the perovskite structure have been obtained by the thermobaric synthesis method. Particularities of their microstructure, elastic properties, electrical conductivity and permittivity have been researched. It has been established that an increase in the thermobaric synthesis temperature leads to a decrease in the Young’s modulus value. Specific static conductivity values have been determined; charge carrier activation enthalpies На have been calculated. The Curie temperature of the samples has been determined to decrease with an increase in tantalum content. A Ferroelectric ceramic solid solution Li0.17Na0.83Ta0.1Nb0.9O3 was shown to undergo four structure phase transitions in the temperature range 300-820 К. A Li0.17Na0.83Ta0.1Nb0.9O3 has been shown to be a high temperature superionic. Possible mechanisms of the detected phenomena are discussed.

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