Title: Joule Heating Induced Nonlinear Behavior in the Phase-Separated System (La0.73Bi0.27)(0.67)Ca0.33MnO3
Authors: Wu, Yuying ×
Xia, Zhengcai
Zhang, Gufei
Vanacken, Johan
Moshchalkov, Victor #
Issue Date: May-2011
Publisher: Plenum Press
Series Title: Journal of Low Temperature Physics vol:163 issue:3-4 pages:176-183
Abstract: A conduction mechanism has been investigated in the phase-separated compound (La0.73Bi0.27)(0.67)Ca0.33MnO3 at various temperatures below and above the ferromagnetic-paramagnetic (FM-PM) transition temperature T (c) . When a high current density applied, a strong nonlinear behavior with negative differential resistance (NDR) was observed. The application of an external magnetic field inhibits the appearance of NDR. Usually, the experiments strongly suggest that the electric field has an important effect on the nonlinear conduction behavior of the sample. However, our experiment shows that, instead of the electric field effect (that is electroresistance), the observed nonlinear behavior results mainly from the Joule heating effect. Thus, we should exercise extreme caution when interpreting the nonlinear conduction behavior of the phase-separated system.
ISSN: 0022-2291
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Solid State Physics and Magnetism Section
× corresponding author
# (joint) last author

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