球形无规键无规场模型研究弛豫铁电体极化效应.docx

球形无规键无规场模型研究弛豫铁电体极化效应
摘要
本研究通过构建球形无规键无规场模型，模拟了弛豫铁电体在电场作用下的极化效应。在分析过程中，我们对模型的建立、数值计算方法和结果进行了详细的介绍和分析。实验表明，弛豫铁电体在电场的作用下，极化强度随着时间的增加而增加，并在一定时刻后达到饱和状态。同时，弛豫铁电体的极化响应受到电场强度和弛豫时间的影响，电场强度越大，极化速率越快；弛豫时间越短，弛豫铁电体的响应速度越快。这些结果为进一步研究弛豫铁电体的性质和应用提供了参考和指导。
关键词：弛豫铁电体；极化效应；球形无规键无规场模型；电场强度；弛豫时间
Abstract
Inthisstudy,asphericaldisorderedbondandfieldmodelwasconstructedtosimulatethepolarizationeffectofarelaxedferroelectricmaterialundertheactionofanelectricfield.Wedetailedtheestablishmentofthemodel,numericalcalculationmethods,andresultsanalysisduringtheanalysis.Theexperimentshowsthatthepolarizationintensityoftherelaxedferroelectricmaterialincreaseswithtimeundertheactionofanelectricfield,andreachessaturationafteracertainperiod.Atthesametime,thepolarizationresponseoftherelaxedferroelectricmaterialisaffectedbytheelectricfieldstrengthandtherelaxationtime.Thelargertheelectricfieldstrength,thefasterthepolarizationrate;theshortertherelaxationtime,thefastertheresponsespeedoftherelaxedferroelectricmaterial.Theseresultsprovidereferenceandguidanceforfurtherresearchonthepropertiesandapplicationsoftherelaxedferroelectricmaterial.
Keywords:relaxedferroelectricmaterial;polarizationeffect;sphericaldisorderedbondandfieldmodel;electricfieldstrength;relaxationtime
Introduction
Thepolarizationphenomenonofferroelectricmaterialsisanimportantphysicalphenomenoninmaterialsscience,whichhasawiderangeofpracticalapplications,suchaselectronicdevices,memorychips,capacitors,andnonlinearopticaldevices.Intheprocessofpracticalapplications,thepolarizationeffectofferroelectricmaterialsisoftenaffectedbyfactorssuchaselectricfieldstrength,temperature,andstress,whichmaycausechangesinthepropertiesandperformanceofthematerials.Therefore,thestudyofthepolarizationeffectofferroelectricmaterialshasgreatsignificanceformaterialscienceandengineering.
Thepolarizationeffectofferroelectricmaterialsisusuallydescribedbythespontaneouspolarizationinducedbythearrangementofelectricdipolesinthecrystallattice.However,thepolarizationeffectofferroelectr