Temperature and pressure dependence of dielectric properties of Pb(Fe1/2Nb1/2)O3with the diffuse phase transition

1989 ◽  
Vol 1 (31) ◽  
pp. 5179-5185 ◽  
Author(s):  
N Yasuda ◽  
Y Ueda
Keyword(s):  
Phase Transition ◽  
Dielectric Properties ◽  
Pressure Dependence ◽  
Diffuse Phase Transition ◽  
Temperature And Pressure ◽  
Diffuse Phase

Dielectric properties of calcium doped BaTi0.85Sn0.15O3: A diffuse phase transition

2010 ◽  
Vol 123 (2-3) ◽  
pp. 786-790 ◽  
Author(s):  
Sindhu Singh ◽  
Prabhakar Singh ◽  
Om Parkash ◽  
Devendra Kumar
Keyword(s):  
Phase Transition ◽  
Dielectric Properties ◽  
Diffuse Phase Transition ◽  
Calcium Doped ◽  
Diffuse Phase

The structure and dielectric properties of thin PZT-type ferroelectric films with a diffuse phase transition

1995 ◽  
Vol 9 (4) ◽  
pp. 267-282 ◽  
Author(s):  
Z. Surowiak ◽  
D. Czekaj ◽  
A. A. Bakirov ◽  
E. V. Sviridov ◽  
V. P. Dudkevich
Keyword(s):  
Phase Transition ◽  
Dielectric Properties ◽  
Diffuse Phase Transition ◽  
Ferroelectric Films ◽  
Diffuse Phase

Microstructure and Dielectric Properties of Ni2+-Doped (Ba,Sr)TiO3 Ceramics

2010 ◽  
Vol 148-149 ◽  
pp. 1383-1389
Author(s):  
Yuan Liang Li ◽  
Yuan Fang Qu ◽  
Qing Jun Zhang ◽  
Ran Ran Wang
Keyword(s):  
Phase Transition ◽  
Dielectric Properties ◽  
Diffuse Phase Transition ◽  
Oxygen Vacancies ◽  
Doping Concentration ◽  
Dissipation Factor ◽  
Dielectric Constants ◽  
Solid Reaction ◽  
Abo3 Perovskite ◽  
Diffuse Phase

Ba0.62Sr0.38TiO3 ceramics of perovskite structure are prepared by solid reaction method with the addition of x wt% NiO and their dielectric properties are investigated. It is found that Ni2+ can enter the B site in ABO3 perovskite when doping concentration is less than 0.6 wt%, whereafter, Ni2+ ions most segregates on the grain boundaries to inhabit the grain growth. Due to the decrease of grain size and the impurity, the dielectric constants are decreased. Decrease of dissipation factor is attributed to appearance of the oxygen vacancy and disappearance of the reduction of Ti4+ ion. It is concluded that the diffuse phase transition is linked to the adulteration of Ni2+. The disordering, mechanical stress in the grain and the oxygen vacancies are produced because of the adulteration of Ni2+, and the diffuse phase transition increases with the level of doping increasing, leading to that the peaks of dielectric constants becomes slower and flatter.

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