Effect of heat treatment on electroresistance in Nd0.67Sr0.33MnO3 ceramics |
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| Authors: | CHEN Shunsheng WANG Ruilong WANG Hao YANG Changping |
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| Affiliation: | The Provincial Key Laboratory of Piezoelectric Ceramics Materials and Apparatus Faculty of Physics and Electronic Technology Hubei University |
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| Abstract: | A remarkable CER(colossal electroresistance) effect was observed in a series of polycrystalline Nd0.67Sr0.33MnO3 samples synthe-sized 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 whi... |
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| Keywords: | colossal electroresistance perovskite heat treatment microstructure rare earths |
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