EFFECTS OF ORDERING DOMAIN STRUCTURE ON DIELECTRIC PROPERTIES OF DOUBLE PEROVSKITE La_(2)NiMnO_(6)

作     者：Y.Q.LIN S.Y.WU X.M.CHEN 

作者机构：Department of Materials Science and Engineering Zhejiang University Hangzhou 310027P.R.China 

出 版 物：《Journal of Advanced Dielectrics》 (先进电介质学报（英文）)

年 卷 期：2011年第1卷第3期

页      面：319-324页

学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 

基　　金：supported by National Sci-ence Foundation of China under Grant numbers 50832005 and 50702049 

主　　题：Ordering degree La_(2)NiMnO_(6)ceramics dielectric properties 

摘      要：Two sets of La_(2)NiMnO_(6)ceramics with different B-site ordering degree were prepared and *** valence states of Ni^(2+)and Mn^(4+)were con-rmed,and the B-site ordering degree was estimated qualitatively using magnetic and Raman *** ordering of Ni^(2+)and Mn^(4+)was the primary origin for the relaxor-like behavior of the present *** ordering degree of B-site ions greatly affected the dielectric properties,i.e.,more ordered sample indicated higher dielectric ***,the grain boundary layer capacitor(GBLC)effect was also activated but limited at the high temperatures and low frequencies.