The theory of morphotropic phase transition in PbZr1 − x Ti x O3

2008 ◽  
Vol 72 (4) ◽  
pp. 529-536
Author(s):  
M. A. Gufan ◽  
A. Yu. Gufan ◽  
K. Yu. Gufan
Keyword(s):  
Phase Transition ◽  
Morphotropic Phase Transition

scholarly journals Поведение керамических твердых растворов 33PbYb-=SUB=-1/2-=/SUB=-Nb-=SUB=-1/2-=/SUB=-O-=SUB=-3-=/SUB=--22PbZrO-=SUB=-3-=/SUB=--45PbTiO-=SUB=-3-=/SUB=- в электрическом поле

2020 ◽  
Vol 46 (6) ◽  
pp. 31
Author(s):  
Л.С. Камзина ◽  
G. Li
Keyword(s):  
Phase Transition ◽  
Dielectric Constant ◽  
Electric Field ◽  
Electric Fields ◽  
Dielectric Parameters ◽  
Morphotropic Phase Transition ◽  
Temperature Dependences ◽  
Pseudocubic Phase

The temperature dependences of the dielectric parameters were studied, as well as the changes in the dielectric constant with time in ceramic 33PbYb1 / 2Nb1 / 2O3-22PbZrO3-45 PbTiO3 samples in electric fields (0 <E <8 kV / cm). It is shown that in the phase existing below the temperature of the morphotropic phase transition, in addition to the rhombohedral and tetragonal phases, a small fraction of the relaxor pseudocubic phase is present. It was found that, unlike other relaxors, the dielectric constant practically does not change with time when an electric field is applied in the phase below the temperature of the morphotropic phase transition. Possible reasons for this behavior are discussed.

Magnetostrictive Anomalies of Rare Earth Laves Phases with Morphotropic Phase Transition

2020 ◽  
Vol 62 (6) ◽  
pp. 947-953 ◽  
Author(s):  
G. A. Politova ◽  
M. A. Ganin ◽  
A. B. Mikhailova ◽  
A. V. Filimonov
Keyword(s):  
Phase Transition ◽  
Rare Earth ◽  
Laves Phases ◽  
Morphotropic Phase Transition

ChemInform Abstract: Crystal Structure, Morphotropic Phase Transition and Luminescence in the New Cyclosilicates Sr3Ln2(Si3O9)2, Ln: Y, Eu-Lu.

ChemInform ◽  
2013 ◽  
Vol 44 (8) ◽  
pp. no-no
Author(s):  
Alexander P. Tyutyunnik ◽  
Ivan I. Leonidov ◽  
Ludmila L. Surat ◽  
Ivan F. Berger ◽  
Vladimir G. Zubkov
Keyword(s):  
Crystal Structure ◽  
Phase Transition ◽  
Morphotropic Phase Transition

Formation of a real structure of perovskites (La1−x , Sr x )CoO3−δ in the region of the morphotropic phase transition

1998 ◽  
Vol 39 (1) ◽  
pp. 75-79 ◽  
Author(s):  
S. V. Tsybulya ◽  
G. N. Kryukova ◽  
L. A. Isupova ◽  
A. N. Shmakov ◽  
S. V. Cherepanova ◽  
...  
Keyword(s):  
Phase Transition ◽  
Real Structure ◽  
Morphotropic Phase Transition

Crystal structure, morphotropic phase transition and luminescence in the new cyclosilicates Sr3R2(Si3O9)2, R=Y, Eu–Lu

2013 ◽  
Vol 197 ◽  
pp. 447-455 ◽  
Author(s):  
Alexander P. Tyutyunnik ◽  
Ivan I. Leonidov ◽  
Ludmila L. Surat ◽  
Ivan F. Berger ◽  
Vladimir G. Zubkov
Keyword(s):  
Crystal Structure ◽  
Phase Transition ◽  
Morphotropic Phase Transition

scholarly journals Индуцированный фазовый переход в монокристаллических твердых растворах PbMg-=SUB=-1/3-=/SUB=-Nb-=SUB=-2/3-=/SUB=-O-=SUB=-3-=/SUB=--29PbTiO-=SUB=-3-=/SUB=- и PbZn-=SUB=-1/3-=/SUB=-Nb-=SUB=-2/3-=/SUB=-O-=SUB=-3-=/SUB=--9PbTiO-=SUB=-3-=/SUB=-: сходство и различие

2021 ◽  
Vol 63 (11) ◽  
pp. 1880
Author(s):  
Л.С. Камзина
Keyword(s):  
Phase Transition ◽  
Dielectric Constant ◽  
Low Temperature ◽  
Electric Fields ◽  
Delay Time ◽  
Optical Transmission ◽  
Ferroelectric Phase ◽  
Morphotropic Phase Transition ◽  
Macroscopic Polarization ◽  
Kinetics Of

The kinetics of the induced phase transition in single-crystal relaxor solid solutions PbMg1 / 3Nb2 / 3O3-29PbTiO3 and PbZn1 / 3Nb2 / 3O3-9PbTiO3 is studied when an electric field is applied along the [001] direction. At temperatures below the temperature of the morphotropic phase transition, the changes in the dielectric constant and optical transmission in electric fields are studied. It is shown that the decrease in optical transmission with time is associated only with a change in the sizes of nanoregions during the phase transition. It was found that the induced phase transition proceeds differently in these crystals. In PMN-29PT crystals, the formation of ferroelectric phases and the rapid establishment of macroscopic polarization are preceded by a certain delay time, while in PZN-9PT crystals, the ferroelectric phase is induced immediately after the application of the field without a delay time. The results obtained are explained by the different structures of the low-temperature phases in these compounds. Key words: ferroelectricity, relaxors, induced phase transition.

Sign in / Sign up

Export Citation Format

Share Document