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Correlation between Electroresistance and Magnetoresistance in Slight Oxygen-Deficient Nd0.67Sr0.33MnO3-δ Polycrystalline Ceramics |
| YANG Chang-Ping1, DENG Heng1, CHEN Shun-Sheng1, WANG Hao1,WEN Zhen-Chao2, HAN Xiu-Feng2, K. Bärner3 |
| 1The Provincial Key Laboratory of Piezoelectric Ceramics Materials and Apparatus, Faculty of Physics and Electronic Technology, Hubei University, Wuhan 4300622The State Key Laboratory on Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing 1001903Department of Physics, University of Göttingen, Tammanstrasse 1-37077 Göttingen, Germany |
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| Cite this article: |
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YANG Chang-Ping, DENG Heng, CHEN Shun-Sheng et al 2008 Chin. Phys. Lett. 25 3773-3775 |
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Abstract A colossal electroresistance effect is found in Nd0.67Sr0.33MnO3-δ polycrystalline ceramics with a very slight oxygen deficiency δ = 0.05. The electroresistance behaviour of Nd0.67Sr0.33MnO3-δ(δ= 0.0 ) displays the striking similarity to its counterpart magnetoresistance. It reveals that the boundary effect plays an important role in electroresistance and the same physical origin is likely responsible for both magnetoresistance and electroresistance effects in Nd0.67Sr0.33MnO3-δ polycrystals.
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75.80.+q
75.25.+z
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Received: 25 April 2008
Published: 26 September 2008
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