简介:Asanimportantmulti-functionalmaterialappliedinsurfaceacousticwavedevices,opticalcommunications,laserandoptoelectronicsduetoitsgoodphotoelectricandpiezoelectricproperties,lithiumtantalate(LiTaO3)hasdrawnextensiveinterests[1].NumerousphysicalpropertiesofLiTaO3,suchasacoustical,electronicstructures,opticalpropertiesandeffectivemass,thermodynamicproperties,havebeenreportedinseveralpapers.Pointdefectswillaffecttheelectronicstructurewhichshouldberesponsibleformanyphysicalproperties,especiallyopticalproperties.
简介:Eu3+activatedSr1–xEuxZrO3(x=0.01–0.04)phosphorwithperovskitestructurewassuccessfullysynthesizedbyusingcombustionmethod.Thestructure,morphologyandopticalpropertiesofthematerialwerecharacterizedbyX-raydiffraction,scanningelectronmicroscopyandfluorescencespectrometry.TheXRDresultsindicatedthatcrystalsofSrZrO3:Eu3+belongstotetragonalperovskitesystem.ThephosphorcouldbeeffectivelyexcitedbyUVlightandtheemissionspectraresultsindicatedthatreddish-orangeluminescenceofSrZrO3:Eu3+duetomagneticdipoletransition5D0→7F1at593nmwasdominant.Thus,thepreparedphosphorshowedremarkableluminescentpropertieswhichfindapplicationsinfieldemissiondisplay(FED)andplasmadisplaypanel(PDP)devices.
简介:本书为研究古代散曲学的开山之作,任中敏先生精心搜集了元明以来的散曲选本凡12种,其中元人选本2种:杨朝英《阳春白雪》、胡存善《乐府群玉》;元人专集4种:马致远《东篱乐府》,乔吉《梦符散曲》,张可久《小山乐府》,贯云石、徐再思《酸甜乐府》;明人专集5种:康海《游东乐府》、王磐《王西楼先生乐府》、冯惟敏《海浮山堂词稿》、沈仕《唾窗绒》、施绍莘《花影集》;清人总集1种:朱彝尊等《清人散曲选刊》;另有任氏自撰曲学著作3种:《作词十法疏证》、《散曲概论》、《曲谐》。这些著作多从元明以来的别集、曲选、笔记中搜集而来,广罗众本,校其异同,辑佚辨伪,有散曲集大成之性质。原书为仿宋版,无标点。本次整理,采用横排版式,加以新式标点。并对原文字句作了校勘,以“今校”的形式补其初版讹误与未备。