Dielectric Properties and Phase Transition of [110]-Oriented 0.68PMN-0.32PT Single Crystals Induced by Temperature and DC Electric Field

2007 ◽  
Vol 336-338 ◽  
pp. 42-45
Author(s):  
Zhen Rong Li ◽  
Jun Jie Qian ◽  
Guo Qiang Zhang ◽  
Zeng Zhe Xi ◽  
Zhuo Xu ◽  
...  
Keyword(s):  
Phase Transition ◽  
Electric Field ◽  
Single Crystal ◽  
Single Crystals ◽  
Ferroelectric Phase ◽  
Orthorhombic Phase ◽  
Polarization Rotation ◽  
Dc Electric Field ◽  
T Phase ◽  
Oriented Single Crystal

The dielectric response of [110]-oriented 0.68PMN-0.32PT single crystal under dc electric field has been investigated. The characteristics of phase transition under temperature and dc electric field are provided. When electric field is above 2.3kV/cm, abnormal phase transition is induced by temperature and electric field, which corresponds to the phase transition from rhombohedral to orthorhombic ferroelectric phase. With increasing dc electric field, the stable temperature region of orthorhombic phase is expanded. The electric field-temperature (E-T) phase diagram of [110]-oriented 0.68PMN-0.32PT single crystals is presented. The polarization rotation in [110]-oriented single crystal is discussed.

Electric field-induced crack growth and domain-structure evolution for [100]- and [101]-oriented 72%Pb(Mg1/3Nb2/3) O3–28%PbTiO3 ferroelectric single crystals

2008 ◽  
Vol 23 (12) ◽  
pp. 3387-3395 ◽  
Author(s):  
F. Fang ◽  
W. Yang ◽  
F.C. Zhang ◽  
H. Qing
Keyword(s):  
Electric Field ◽  
Crack Propagation ◽  
Single Crystal ◽  
Single Crystals ◽  
Crack Growth ◽  
Domain Structure ◽  
Boundary Structure ◽  
Structure Evolution ◽  
In Situ Observation ◽  
Oriented Single Crystal

In situ observation of the electrically induced crack growth and domain-structure evolution is carried out for [100]- and [101]-oriented 72%Pb(Mg1/3Nb2/3)O3–28% PbTiO3 (PMN–PT 72/28) ferroelectric single crystals under static (poling) and alternating electric fields. On the same poling electric field, domains are in the stable engineered domain state where four equivalent polarization variants coexist for [100]-oriented single crystal, while parallel lines representing the 71° domain boundaries appear for [101]-oriented one. Under the same cyclic electric field, the [100]-oriented single crystal shows much higher crack propagation resistance than that of a [101]-oriented crystal. Apart from the material aspects, such as crystallographic fracture anisotropy and non-180° domain boundary structure, crack boundary condition plays an important role in determining the crack propagation behavior.

Temperature and Electric Field Dependent Phase Transformations in [001] PMN-PT Single Crystal

2021 ◽  
Vol 875 ◽  
pp. 55-59
Author(s):  
Ghulam Shabbir ◽  
Ahmad H. Qureshi
Keyword(s):  
Phase Transition ◽  
Phase Diagram ◽  
Electric Field ◽  
Single Crystal ◽  
Cubic Phase ◽  
Zero Field ◽  
Field Phase ◽  
Phase Transition Temperatures ◽  
Field Dependent ◽  
Oriented Single Crystal

The capacitance of (1-x)Pb(Mg1/3Nb2/3)O3-xPbTiO3 (PMN-xPT) [001]-oriented single crystal was examined as a function of temperature and applied external dc electric field. The phase transition temperatures under the applied electric field were measured upon cooling the crystal (zero-field heating field-cooling condition) from paraelectric cubic phase. From these data, temperature versus electric field phase diagram of PMN-xPT crystal have been constructed and discussed.

Dielectric Study of the Ferroelectric Phase Transition in DMAGaS Crystal

1998 ◽  
Vol 53 (3-4) ◽  
pp. 105-111 ◽  
Author(s):  
R. Tchukvinskyi ◽  
R. Cach ◽  
Z. Czapla
Keyword(s):  
Phase Transition ◽  
Electric Field ◽  
Ferroelectric Phase Transition ◽  
Ferroelectric Phase ◽  
Paraelectric Phase ◽  
Dielectric Study ◽  
Electric Permittivity ◽  
First Order ◽  
Dc Electric Field

Abstract Electric permittivity measurments as functions of temperature at constant dc electric field and as functions of the dc electric field at constant temperatures in the paraelectric phase have been performed for DMAGaS crystal. The changes of the permittivity maximum with the electric field intensity evidence the first-order character of the ferroelectric phase transition at Tc1. The field dependence of the permittivity ε(E) in the paraelectric phase is discussed, using the classical electric equation of state. A method for the determination of the corresponding coefficients is proposed. The obtained B and C coefficients, together with double hysteresis loop observed above Tc1 prove the first-order character of the ferroelectric phase transition in DMAGaS crystal.

Triple-like hysteresis loop and electric field-induced tetragonal–orthorhombic phase transition in the 0.62Pb(Mg1/3Nb2/3)O3–0.38PbTiO3 single crystal

2003 ◽  
Vol 198 (1) ◽  
pp. R1-R3 ◽  
Author(s):  
Xiangyong Zhao ◽  
Jie Wang ◽  
Zhi Peng ◽  
Helen L. W. Chan ◽  
Haosu Luo ◽  
...  
Keyword(s):  
Phase Transition ◽  
Electric Field ◽  
Single Crystal ◽  
Hysteresis Loop ◽  
Orthorhombic Phase
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