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ID 19271
本文ファイル
著者
Qiao, Shan
Adachi, Hiromichi
Iori, Kazuyuki
Xie, Tian
Muro, Takayuki
Imada, Shin
Suga, Shigemasa
抄録(英)
We have performed x-ray magnetic circular dichroism experiments to study the cancellation of spin and orbital magnetic moments in (Sm, Gd)Al2, a ferromagnet without net magnetization at a certain compensation temperature, Tcomp. We verified the existence of long-range order for both spin and orbital magnetic moments at Tcomp. The spin and orbital magnetic moments of the Sm ion are found always antiparallel coupled and the magnitude of its orbital magnetic moment is always larger than that of spin one, so the cancellation of magnetic moments cannot be achieved by only Sm 4f electrons. We show that the addition of spin magnetic moments of Gd ions and conduction electrons, which are ferromagnetically coupled with the spin magnetic moment of Sm ions, cancels out the surplus orbital magnetic moments in Sm ions completely and results in the zero magnetization at Tcomp. All our experimental results can be reproduced well by atomic multiplet calculations.
掲載誌名
Physical Review B - Condensed Matter and Materials Physics
70巻
13号
開始ページ
134418-1
終了ページ
134418-5
出版年月日
2004-10-26
出版者
American Physical Society
ISSN
1098-0121
NCID
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
publisher
権利情報
Copyright (c) 2004 The American Physical Society.
関連情報URL
部局名
理学研究科
先端物質科学研究科
放射光科学研究センター