Alternating-Current Transport Properties of the Interface between Nd0.7Sr0.3MnO3 Ceramic and a Ag Electrode
CHEN Shun-Sheng1,2, YANG Chang-Ping1,5**, LUO Xiao-Jing1, Bärner K.3, Medvedeva I. V.4
1Faculty of Physics and Electronic Technology, Hubei University, Wuhan 430062 2Faculty of Mathematics and Physics, Huangshi Institute of Technology, Huangshi 435003 3Department of Physics, University of Göttingen, Tammanstrasse 1-37077 Göttingen, Germany 4Institute of Metal Physics, Ural Division of the Russian Academy of Sciences, Ekaterinburg 620219, Russia 5State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004
Alternating-Current Transport Properties of the Interface between Nd0.7Sr0.3MnO3 Ceramic and a Ag Electrode
CHEN Shun-Sheng1,2, YANG Chang-Ping1,5**, LUO Xiao-Jing1, Bärner K.3, Medvedeva I. V.4
1Faculty of Physics and Electronic Technology, Hubei University, Wuhan 430062 2Faculty of Mathematics and Physics, Huangshi Institute of Technology, Huangshi 435003 3Department of Physics, University of Göttingen, Tammanstrasse 1-37077 Göttingen, Germany 4Institute of Metal Physics, Ural Division of the Russian Academy of Sciences, Ekaterinburg 620219, Russia 5State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004
摘要Electrical transport properties of the interface between a Nd0.7Sr0.3MnO3 ceramic and a Ag electrode are investigated using the ac impedance over a wide temperature and frequency ranges. The ac impedance measurements give the compressed semicircle arcs at different temperatures, which are used for the analysis of different contributions to electrical transport based on an electrical equivalent circuit. A significant interface-dependent electroresistance effect of 530% is clearly developed around the metal-insulator transition temperature 130 K, which is confirmed as the interface-layer dependent Curie temperature by the plot of interfacial conductance with frequency at different temperatures.
Abstract：Electrical transport properties of the interface between a Nd0.7Sr0.3MnO3 ceramic and a Ag electrode are investigated using the ac impedance over a wide temperature and frequency ranges. The ac impedance measurements give the compressed semicircle arcs at different temperatures, which are used for the analysis of different contributions to electrical transport based on an electrical equivalent circuit. A significant interface-dependent electroresistance effect of 530% is clearly developed around the metal-insulator transition temperature 130 K, which is confirmed as the interface-layer dependent Curie temperature by the plot of interfacial conductance with frequency at different temperatures.
CHEN Shun-Sheng1,2, YANG Chang-Ping1,5**, LUO Xiao-Jing1, Bärner K.3, Medvedeva I. V.4. Alternating-Current Transport Properties of the Interface between Nd0.7Sr0.3MnO3 Ceramic and a Ag Electrode[J]. 中国物理快报, 2012, 29(2): 27302-027302.
CHEN Shun-Sheng, YANG Chang-Ping, LUO Xiao-Jing, Bä, rner K., Medvedeva I. V.. Alternating-Current Transport Properties of the Interface between Nd0.7Sr0.3MnO3 Ceramic and a Ag Electrode. Chin. Phys. Lett., 2012, 29(2): 27302-027302.
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2012, Vol. 29 
