Effect of heat treatment on electroresistance in Nd0.67Sr0.33MnO3 ceramics

O6; A remarkable CER(colossal electroresistance)effect was observed in a series of polycrystalline Nd0.67Sr0.33MnO3 samples synthesized by high energy ball milling successive heat treatment.The CER ratio increased with increasing heating time and reached 3580% at a low temperature for the Nd0.67Sr0....

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Bibliographic Details
Published inJournal of rare earths Vol. 28; no. 2; pp. 251 - 254
Main Authors CHEN, Shunsheng, WANG, Ruilong, WANG, Hao, YANG, Changping
Format Journal Article
LanguageEnglish
Published The Provincial Key Laboratory of Piezoelectric Ceramics Materials and Apparatus,Faculty of Physics and Electrenic Technology,Hubei University,Wuhan 430062,China 01.04.2010
Subjects
colossal electroresistance
perovskite
microstructure
heat treatment
rare earths
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Summary:O6; A remarkable CER(colossal electroresistance)effect was observed in a series of polycrystalline Nd0.67Sr0.33MnO3 samples synthesized by high energy ball milling successive heat treatment.The CER ratio increased with increasing heating time and reached 3580% at a low temperature for the Nd0.67Sr0.33MnO3 ceramic annealed up to 13 h as measuring current was enhanced from 5 to 500 μA.The result showed that the CER effect was strongly dependent on the sample's microstructure,especially on the foreign phases which were gradually developed within grain boundaries when annealing time was more than 3 h.
ISSN:1002-0721
2509-4963
DOI:10.1016/S1002-0721(09)60090-9