Influence of electron doping on magnetic order in CeRu$$_2$$Al$$_{10}$$
CeRu$$_2$$Al$$_{10}$$の磁気秩序における電子ドープ効果
小林 理気*; 金子 耕士; 斉藤 耕太郎*; Mignot, J.-M.*; Andr$'e$, G.*; Robert, J.*; 脇本 秀一; 松田 雅昌*; Chi, S.*; 芳賀 芳範; 松田 達磨*; 山本 悦嗣; 西岡 孝*; 松村 政博*; 谷田 博司*; 世良 正文*
Kobayashi, Riki*; Kaneko, Koji; Saito, Kotaro*; Mignot, J.-M.*; Andr$'e$, G.*; Robert, J.*; Wakimoto, Shuichi; Matsuda, Masaaki*; Chi, S.*; Haga, Yoshinori; Matsuda, Tatsuma*; Yamamoto, Etsuji; Nishioka, Takashi*; Matsumura, Masahiro*; Tanida, Hiroshi*; Sera, Masafumi*
The effect of electron doping by the substitution of Rh for Ru on unconventional magnetic order in CeRu$$_2$$Al$$_{10}$$ was investigated via neutron powder diffraction. In Ce(Ru$$_{1-x}$$Rh$$_x$$)$$_2$$Al$$_{10}$$ with $$x$$ = 0.05, 0.12, 0.2, reorientation of the ordered moment from the $$c$$- to the $$a$$-axis takes place in all samples, while the ordering vector $$q$$ = (0 1 0) remains unchanged within this concentration range. The moment reorientation is accompanied by an enhancement in its size by a factor of 2.4, from $${mu}$$=0.43 $${mu}_B$$ at $$x$$ = 0 to $${mu}$$=1.06, 1.04, and 1.02 $${mu}_B$$ for $$x$$ = 0.05, 0.12 and 0.2, respectively. The continuous decrease in N$'e$el temperature $$T_0$$($$T_N$$), despite an abrupt increase in $${mu}$$, underlines the strong anisotropy in the exchange interaction in CeRu$$_2$$Al$$_{10}$$, and the fact that this anisotropy is easily suppressed by electron doping.
使用言語 : English
掲載資料名 : Journal of the Physical Society of Japan
: 83
: 10
ページ数 : p.104707_1 - 104707_5
発行年月 : 2014/10
出版社名 : 日本物理学会
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キーワード : J-PARC
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登録番号 : AA20140256
抄録集掲載番号 : 42001295
論文投稿番号 : 14934
Accesses  (From Jun. 2, 2014)
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パーセンタイル:19.97
分野:Physics, Multidisciplinary
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