J. Mater. Sci. Technol. ›› 2013, Vol. 29 ›› Issue (8): 737-741.DOI: 10.1016/j.jmst.2013.04.010

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Observation of an EPIR Effect in Nd1-xSrxMnO3 Ceramics with Secondary Phases

S.S. Chen1,2), X.J. Luo2), D.W. Shi2),H.Li1), C.P. Yang2)   

  1. 1) School of Mathematics and Physics, Hubei Polytechnic University, Huangshi 435003, China
    2) Faculty of Physics and Electronic Technology, Hubei University, Wuhan 430062, China
  • Received:2011-12-19 Revised:2012-04-10 Online:2013-08-30 Published:2013-07-17
  • Contact: C.P. Yang
  • Supported by:

    Hubei Polytechnic University (No. 12xjz01R), The Natural Science Foundation of Hubei Province (No. 2012FFB01001) and the Program of Ministry of Education of China (for New Century Excellent Talents in Uni­versity, No. NCET-08-0674) for their financial supports.

Abstract:

Nd1−xSrxMnO3 (x = 0.3, 0.5) ceramics containing a secondary phase are synthesized by high-energy ball milling and post heat-treatment method. The 4-wire and 2-wire measuring modes are used to investigate the transport character of the grain/phase boundary (inner interface) and electrode-bulk interface (outer interface), respectively, and the results indicate that there is a similar nonlinear IV behaviour for both of the inner and outer interfaces, however, the electric pulse induced resistance change (EPIR) effect can only be observed at the outer interface.

Key words: Electric pulse induced resistance change (EPIR), Space charge layer, Nonlinearity, Manganite, High-energy ball milling