Dielectric Relaxation of Complex Perovskite Sm(Ni1/2Zr1/2)O3
Abstract
Complexperovskiteoxidesamariumnickelzirconate,Sm(Ni1/2Zr1/2)O3 (SNZ), issynthesizedbyasolid-
state reactiontechnique.X-raydiffractionofthesampleatroomtemperatureshowsamonoclinic
phase.Impedancespectroscopyisusedtostudytheelectricalbehaviourofthismaterialinthe
frequencyrange400Hz–1MHzandinthetemperaturerange303–633K.Thefrequencydependenceof
loss peaksisfoundtoobeyanArrheniuslawwiththeactivationenergyof0.8eV.Frequency-dependent
conductivityspectrafollowapowerlaw.Relaxationmechanismofthesampleintheframeworkof
electricmodulusformalismismodelledbytheCole–Coleequation.Thescalingbehaviourofthe
imaginarypartofelectricmodulussuggeststhatrelaxationdescribesthesamemechanismatvarious
temperatures.Compleximpedanceplaneplotshowstwosemicirculararcs,indicatingthegrainand
grain-boundarycontributionsofdielectricrelaxationinthismaterial
URI
1. Full Text Link ->http://www.sciencedirect.com/science/article/pii/S0921452610007623#
=================================================
2. Scopus : Citation Link ->
http://www.scopus.com/record/display.url?eid=2-s2.0-77957142049&origin=resultslist&sort=plf-f&src=s&st1=Dielectric+Relaxation+of+Complex+Perovskite+Sm&sid=39DVfT7CEB2Y1kzOfl1dwPf%3a590&sot=q&sdt=b&sl=66&s=TITLE-ABS-KEY-AUTH%28Dielectric+Relaxation+of+Complex+Perovskite+Sm%29&relpos=4&relpos=4&searchTerm=TITLE-ABS-KEY-AUTH%28Dielectric%20Relaxation%20of%20Complex%20Perovskite%20Sm%29