Magnetic and electric properties of Sr2FeMoO6

被引：8

作者：

Sánchez, RD ^{[1
]}

Niebieskikwiat, D

Caneiro, A

Morales, L

Vásquez-Mansilla, M

Rivadulla, F

Hueso, LE

机构：

[1] Comis Nacl Energia Atom, Ctr Atom Bariloche, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina

[2] Comis Nacl Energia Atom, Inst Balseiro, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina

[3] Consejo Nacl Invest Cient & Tecn, RA-1033 Buenos Aires, DF, Argentina

[4] Univ Santiago de Compostela, Dept Phys Chem, Santiago De Compostela 15706, Spain

[5] Univ Santiago de Compostela, Dept Appl Phys, Santiago De Compostela 15706, Spain

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2001年 / 226卷

关键词：

grain boundaries; electrical resistivity; magnetoresistance;

D O I：

10.1016/S0304-8853(00)00640-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present electrical resistivity (rho) and magnetic susceptibility (chi) data of the Sr2FeMoO6 double perovskite. We found that the as prepared sample shows semiconducting rho (T) in the whole temperature range and a magneto resistance behavior typical of electron tunneling at the grain boundaries (,gb). When the oxygen of the gb is removed rho drops one order of magnitude. Below the magnetic ordering temperature T-C approximate to 405 K and above 590 K this sample is metallic (d rho /dT > 0), while for T-C < T < 590 K we observe a weak localization. The chi (T) data follow the Curie-Weiss law only in a short temperature range above T-C. (C) 2001 Elsevier Science BN. All rights reserved.

引用

页码：895 / 897

页数：3

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