Relaxation behaviour of Pb(Ni1/3Nb2/3)O3 ceramics

1993 ◽  
Vol 71 (7-8) ◽  
pp. 322-325 ◽  
Author(s):  
Seema Sharma ◽  
R. Sati ◽  
R. N. P. Choudhary
Keyword(s):  
Phase Transition ◽  
Diffuse Phase Transition ◽  
High Dielectric Constant ◽  
Pyrochlore Phase ◽  
Relaxation Behaviour ◽  
Dielectric Studies ◽  
Solid State Reaction Technique ◽  
High Dielectric ◽  
A Minor ◽  
Diffuse Phase

Polycrystalline samples of a cubic perovskite structure with an estimated 2.9% of a minor pyrochlore phase of Pb(Ni1/3,Nb2/3)O3 were synthesized by a high-temperature solid-state reaction technique. Dielectric studies show that the material is a good relaxor with a high dielectric constant. Diffuse phase transition through a wide Curie-temperature range was observed. The activation energy in a specified range of temperature for the material is estimated.

Stabilization of perovskite phase and dielectric properties of Pb(Zn, Mg)1/3Nb2/3O3-PbTiO3 ceramics prepared by excess constituent oxides

1994 ◽  
Vol 9 (10) ◽  
pp. 2634-2644 ◽  
Author(s):  
Hyun M. Jang ◽  
Kyu-Mann Lee ◽  
Moon-Ho Lee
Keyword(s):  
Phase Transition ◽  
Diffuse Phase Transition ◽  
Short Range ◽  
Perovskite Phase ◽  
Complex Impedance ◽  
Pyrochlore Phase ◽  
Charge Carriers ◽  
Pbtio3 Ceramics ◽  
Additional Formation ◽  
Diffuse Phase

The perovskite phase in PZN-PMN-PT (PbZn1/3Nb2/3O3-PbMg1/3Nb2/3O3-PbTiO3) pseudoternary ceramics was stabilized by the addition of excess constituent divalent oxides (PbO, MgO, and ZnO). 5 mol% excess MgO or 7.5 mol% excess PbO was sufficient to eliminate the remnant cubic pyrochlore phase after sintering at 1100 °C for 1 h. The enhanced diffuse phase transition (DPT) and the decrease in the electrical resistivity were observed in the presence of excess ZnO or MgO. These were interpreted in terms of the additional formation of negatively charged, short-range ordered 1: 1 domains with a concomitant generation of charge carriers (holes). The behavior of excess MgO or ZnO at concentrations above 5 mol% was studied by examining complex impedance patterns.

Diffuse phase transition in Ba5YTi3−xZrxNb7O30 ferroelectrics

2002 ◽  
Vol 74 (2) ◽  
pp. 113-120 ◽  
Author(s):  
N.K. Singh ◽  
R.N.P. Choudhary ◽  
A. Panigrahi
Keyword(s):  
Phase Transition ◽  
Diffuse Phase Transition ◽  
Diffuse Phase

PmC6. Giant electrostriction of ferroelectrics with diffuse phase transition - physics and applications

1992 ◽  
Vol 134 (1) ◽  
pp. 139-144 ◽  
Author(s):  
V. V. Lemanov ◽  
N. K. Yushin ◽  
E. P. Smirnova ◽  
A. V. Sotnikov ◽  
E. A. Tarakanov ◽  
...  
Keyword(s):  
Phase Transition ◽  
Diffuse Phase Transition ◽  
Diffuse Phase

Photoinduced phenomena in lead magnesium niobate crystal at the diffuse phase transition

1978 ◽  
Vol 18 (1) ◽  
pp. 113-116 ◽  
Author(s):  
L. S. Kamzina ◽  
N. N. Krainik ◽  
G. A. Smolensky ◽  
V. A. Trepakov
Keyword(s):  
Phase Transition ◽  
Diffuse Phase Transition ◽  
Lead Magnesium Niobate ◽  
Magnesium Niobate ◽  
Lead Magnesium ◽  
Photoinduced Phenomena ◽  
Diffuse Phase

Polarization behavior in diffuse phase transition of BaxSr1−xTiO3 ceramics

2009 ◽  
Vol 105 (5) ◽  
pp. 054111 ◽  
Author(s):  
Takashi Teranishi ◽  
Takuya Hoshina ◽  
Hiroaki Takeda ◽  
Takaaki Tsurumi
Keyword(s):  
Phase Transition ◽  
Diffuse Phase Transition ◽  
Polarization Behavior ◽  
Diffuse Phase

Critical electron-phonon phenomena and some experimental studies of the ferroelectrics with the diffuse phase transition

1978 ◽  
Vol 21 (1) ◽  
pp. 521-523 ◽  
Author(s):  
G. A. Smolensky ◽  
N. N. Krainik ◽  
V. A. Trepakov ◽  
S. A. Ktitorov ◽  
L. S. Kamzina ◽  
...  
Keyword(s):  
Phase Transition ◽  
Diffuse Phase Transition ◽  
Experimental Studies ◽  
Diffuse Phase
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