Effect of ion doping on CuO magnetism

被引：45

作者：

Borzi, RA

Stewart, SJ

Punte, G

Mercader, RC

Curutchet, GA

Zysler, RD

Tovar, M

机构：

[1] Natl Univ La Plata, Dept Fis, RA-1900 La Plata, Argentina

[2] CINDEFI, RA-1900 La Plata, Argentina

[3] Ctr Atom Bariloche, RA-8400 Bariloche, Rio Negro, Argentina

[4] Inst Balseiro, RA-8400 Bariloche, Rio Negro, Argentina

来源：

JOURNAL OF APPLIED PHYSICS | 2000年 / 87卷 / 09期

关键词：

D O I：

10.1063/1.373186

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have investigated the magnetism of 0.5 at. % Fe3+-doped CuO samples by Mossbauer spectroscopy and magnetization studies. The Curie-Weiss-type behavior observed for low-field-magnetization measurements at temperatures higher than 220 K is interpreted as an uncompensation of moments enhanced by the doping. The results are compared with 1.2 at. % Zn2+-doped CuO magnetization results and previous ones for samples doped with divalent ions. Trivalent ion doping produces an increase in the susceptibility with a peak at T-N. The magnetic coupling of Fe2+ ions to the magnetic lattice is found to be about four times stronger than that of Fe3+. (C) 2000 American Institute of Physics. [S0021-8979(00)29708-9].

引用

页码：4870 / 4872

页数：3

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