Antiferromagnetic-to-ferromagnetic transition induced by diluted Co in SrFe1-xCoxO3:: Magnetic circular x-ray dichroism study -: art. no. 104401

被引：21

作者：

Okamoto, J ^{[1
]}

Mamiya, K

Fujimori, SI

Okane, T

Saitoh, Y

Muramatsu, Y

Yoshii, K

Fujimori, A

Tanaka, A

Abbate, M

Koide, T

Ishiwata, S

Kawasaki, S

Takano, M

机构：

[1] SPring8, Japan Atom Energy Res Inst, SRRC, Sayo, Hyogo 6795148, Japan

[2] Univ Tokyo, Dept Complex Sci & Engn, Bunkyo Ku, Tokyo 1130033, Japan

[3] Hiroshima Univ, Dept Quantum Matter, Higashihiroshima 7398530, Japan

[4] Univ Fed Parana, Dept Fis, BR-81531990 Curitiba, Parana, Brazil

[5] High Energy Accelerator Res Org, IMSS, Photon Factory, Tsukuba, Ibaraki 3050801, Japan

[6] Kyoto Univ, Chem Res Inst, Kyoto 6110011, Japan

来源：

PHYSICAL REVIEW B | 2005年 / 71卷 / 10期

关键词：

D O I：

10.1103/PhysRevB.71.104401

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The antiferromagnetic-to-ferromagnetic transition in SrFe1-xCoxO3 (x(c)similar or equal to 0.15) induced by Co doping has been studied by magnetic circular x-ray dichroism. The orbital and spin magnetic moments of the Fe and Co 3d states under the magenetic field of 2 T are found to show different x dependences: The spin polarization of Fe 3d gradually increases with Co concentration; on the other hand, a large spin polarization of Co 3d is induced already in the antiferromagnetic phase, indicating that the Co moment is nearly fully alligned already in the antiferromagnetic phase. This suggests that the alignment of the Fe magnetic moment in SrFe1-xCoxO3 is induced by interaction with doped Co magnetic moment. Possible formation of ferromagnetic Co rich region is discussed.

引用

页数：5

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