Spin-Dependent Electroresistance Behaviour of Nd0.67Sr0.33MnO3-δ(0≤δ≤0.20)

稀土学报(英文版), 2007, 25(z1): 69-71.

^1, , ^2, , ^3, , ^4,

1.Provincial Key Laboratory of Piezoelectric Ceramics Materials and Apparatus, Faculty of Physics & Electronic Technology, Hubei University, Wuhan 430062, China

2.Provincial Key Laboratory of Piezoelectric Ceramics Materials and Apparatus, Faculty of Physics & Electronic Technology, Hubei University, Wuhan 430062, China

3.Provincial Key Laboratory of Piezoelectric Ceramics Materials and Apparatus, Faculty of Physics & Electronic Technology, Hubei University, Wuhan 430062, China

4.Provincial Key Laboratory of Piezoelectric Ceramics Materials and Apparatus, Faculty of Physics & Electronic Technology, Hubei University, Wuhan 430062, China

基金项目: 国家自然科学基金(10774040) Excellent Young Scientist Foundation of Hubei Province(2006ABB032)

Spin-Dependent Electroresistance Behaviour of Nd0.67Sr0.33MnO3-δ(0≤δ≤0.20)

Zhou Zhihui ^1, , Yang Changping ^2, , Deng Heng ^3, , Yang Fujun ^4,

1.Provincial Key Laboratory of Piezoelectric Ceramics Materials and Apparatus, Faculty of Physics & Electronic Technology, Hubei University, Wuhan 430062, China

2.Provincial Key Laboratory of Piezoelectric Ceramics Materials and Apparatus, Faculty of Physics & Electronic Technology, Hubei University, Wuhan 430062, China

3.Provincial Key Laboratory of Piezoelectric Ceramics Materials and Apparatus, Faculty of Physics & Electronic Technology, Hubei University, Wuhan 430062, China

4.Provincial Key Laboratory of Piezoelectric Ceramics Materials and Apparatus, Faculty of Physics & Electronic Technology, Hubei University, Wuhan 430062, China

Keywords： manganites

Oxygen deficient Nd0.67Sr0.33MnO3-δ ceramic samples were prepared using conventional ceramic technology. A colossal electroresistance (CER) effect was found in Nd0.67Sr0.33MnO3-δ series. The electrical transport is magnetically coupled and spin-dependent over grain or phase boundaries. Electrical-field-induced changes of the spin array orientations inside of and between the magnetic domains by grain or phase boundaries have to be concluded for the strong electroresistive effect in Nd0.67Sr0.33MnO3-δ series.

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