Correlation between electroresistance and magnetoresistance in slight oxygen-deficient Nd0.67Sr0.33MnO3-delta polycrystalline ceramics

ISSN
0256-307X
Date Issued
2008
Author(s)
Yang Chang-Ping, Yang Chang-Ping
Deng, Heng
Chen Shun-Sheng, Chen Shun-Sheng
Wen Zhen-Chao, Wen Zhen-Chao
Han Xiu-Feng, Han Xiu-Feng
Baerner, K.
Abstract
A colossal electroresistance effect is found in Nd0.67Sr0.33MnO3-delta polycrystalline ceramics with a very slight oxygen deficiency 6 = 0.05. The electroresistance behaviour of Nd0.67Sr0.33MnO3-delta (delta = 0.05) 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-delta polycrystals.