Evidence of new magnetic ordering at high temperatures in Pb-based multiferroics perovskites

被引：7
|
作者：
Fraygola, Barbara [1 ]
Nascimento, William J. [1 ]
Coelho, Adelino A. [2 ]
Garcia, Ducinei [1 ]
Eiras, Jose A. [1 ]
机构：
[1] Univ Fed Sao Carlos, Dept Fis, Grp Ceram Ferroeletr GCFer, BR-13565670 Sao Carlos, SP, Brazil
[2] Univ Estadual Campinas, LPCM DFA, IFGW, Campinas, SP, Brazil
来源：
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE | 2013年 / 210卷 / 09期
基金：
巴西圣保罗研究基金会;
关键词：
ferroelectrics; magnetic proprieties; multiferroics; niobates; tungstates; PB(FE1/2NB1/2)O-3; BEHAVIOR; RAMAN;
D O I：
10.1002/pssa.201329011
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Presented here are the results of magnetic data that reveal that both Pb-based perovskites samples, Pb(Fe1/2Nb1/2)O-3 (lead iron niobate - PFN) and Pb(Fe2/3W1/3)O-3 (lead iron tungstate - PFW), exhibit a change in magnetic ordering from paramagnetic (PM) to weak ferromagnetic state at high temperature: a weak ferromagnetic order occurs in the samples around 530K. The experimental results suggest a possible involvement of the Pb ions into the superexchange of antiferromagnetic (AFM) phase.
引用
收藏
页码：1856 / 1860
页数：5
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