Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10653777 | Solid State Communications | 2005 | 5 Pages |
Abstract
The influence of dc current on the resistivity Ï and the Young's modulus E of La0.5Ca0.5MnO3 compound has been investigated by means of an in situ measuring method. At low temperatures, both the resistivity Ï and the relative modulus ÎE increase with the current. A relaxation behavior of Ï to the higher resistive state is observed at a fixed temperature and a constant current. After storing the sample for a few days, Ï decreases with the current, accompanying a slight drop of ÎE at low temperatures. Current-induced effects on Ï and ÎE are interpreted according to the current-induced interwinning of Mn3+O6 octahedral distortion modes between Q2- and Q3-types, which is suggested to contribute to the variation of the resistivity.
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
Y.Q. Ma, W.H. Song, J. Yang, R.L. Zhang, B.C. Zhao, Z.G. Sheng, W.J. Lu, J.J. Du, Y.P. Sun,