Influence of electron doping on magnetic order in CeRu2Al10

Riki Kobayashi; Koji Kaneko; Kotaro Saito; Jean Michel Mignot; Gilles André; Julien Robert; Shuichi Wakimoto; Masaaki Matsuda; Songxue Chi; Yoshinori Haga; Tatsuma D. Matsuda; Etsuji Yamamoto; Takashi Nishioka; Masahiro Matsumura; Hiroshi Tanida; Masafumi Sera

doi:10.7566/JPSJ.83.104707

Influence of electron doping on magnetic order in CeRu₂Al₁₀

Riki Kobayashi, Koji Kaneko, Kotaro Saito, Jean Michel Mignot, Gilles André, Julien Robert, Shuichi Wakimoto, Masaaki Matsuda, Songxue Chi, Yoshinori Haga, Tatsuma D. Matsuda, Etsuji Yamamoto, Takashi Nishioka, Masahiro Matsumura, Hiroshi Tanida, Masafumi Sera

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Abstract

The effect of electron doping by the substitution of Rh for Ru on unconventional magnetic order in CeRu₂Al₁₀ was investigated via neutron powder diffraction. In Ce(Ru₁-_xRh_x)₂Al₁₀ with x = 0.05, 0.12, and 0.2, reorientation of the ordered moment from the c-axis as in pure CeRu₂Al₁₀ 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 increase in its size by a factor of ∼2.4, from μ = 0.43 μ _B at x = 0 to μ = 1.06, 1.04, and 1.02 μ _B for x = 0.05, 0.12, and 0.2, respectively. The continuous decrease in the Néel temperature T₀(T_N ), despite an abrupt increase in μ , underlines the strong anisotropy in the exchange interaction in CeRu₂Al₁₀ and the fact that this anisotropy is easily suppressed by electron doping.

Original language	English
Article number	104707
Journal	Journal of the Physical Society of Japan
Volume	83
Issue number	10
DOIs	https://doi.org/10.7566/JPSJ.83.104707
State	Published - Oct 15 2014

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© 2014 The Physical Society of Japan.

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Kobayashi, R., Kaneko, K., Saito, K., Mignot, J. M., André, G., Robert, J., Wakimoto, S., Matsuda, M., Chi, S., Haga, Y., Matsuda, T. D., Yamamoto, E., Nishioka, T., Matsumura, M., Tanida, H., & Sera, M. (2014). Influence of electron doping on magnetic order in CeRu₂Al₁₀. Journal of the Physical Society of Japan, 83(10), Article 104707. https://doi.org/10.7566/JPSJ.83.104707

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title = "Influence of electron doping on magnetic order in CeRu2Al10",

abstract = "The effect of electron doping by the substitution of Rh for Ru on unconventional magnetic order in CeRu2Al10 was investigated via neutron powder diffraction. In Ce(Ru1-xRhx)2Al10 with x = 0.05, 0.12, and 0.2, reorientation of the ordered moment from the c-axis as in pure CeRu2Al10 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 increase in its size by a factor of ∼2.4, from μ = 0.43 μ B at x = 0 to μ = 1.06, 1.04, and 1.02 μ B for x = 0.05, 0.12, and 0.2, respectively. The continuous decrease in the N{\'e}el temperature T0(TN ), despite an abrupt increase in μ , underlines the strong anisotropy in the exchange interaction in CeRu2Al10 and the fact that this anisotropy is easily suppressed by electron doping.",

author = "Riki Kobayashi and Koji Kaneko and Kotaro Saito and Mignot, {Jean Michel} and Gilles Andr{\'e} and Julien Robert and Shuichi Wakimoto and Masaaki Matsuda and Songxue Chi and Yoshinori Haga and Matsuda, {Tatsuma D.} and Etsuji Yamamoto and Takashi Nishioka and Masahiro Matsumura and Hiroshi Tanida and Masafumi Sera",

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doi = "10.7566/JPSJ.83.104707",

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AU - Kobayashi, Riki

AU - Kaneko, Koji

AU - Saito, Kotaro

AU - Mignot, Jean Michel

AU - André, Gilles

AU - Robert, Julien

AU - Wakimoto, Shuichi

AU - Matsuda, Masaaki

AU - Chi, Songxue

AU - Haga, Yoshinori

AU - Matsuda, Tatsuma D.

AU - Yamamoto, Etsuji

AU - Nishioka, Takashi

AU - Matsumura, Masahiro

AU - Tanida, Hiroshi

AU - Sera, Masafumi

PY - 2014/10/15

Y1 - 2014/10/15

N2 - The effect of electron doping by the substitution of Rh for Ru on unconventional magnetic order in CeRu2Al10 was investigated via neutron powder diffraction. In Ce(Ru1-xRhx)2Al10 with x = 0.05, 0.12, and 0.2, reorientation of the ordered moment from the c-axis as in pure CeRu2Al10 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 increase in its size by a factor of ∼2.4, from μ = 0.43 μ B at x = 0 to μ = 1.06, 1.04, and 1.02 μ B for x = 0.05, 0.12, and 0.2, respectively. The continuous decrease in the Néel temperature T0(TN ), despite an abrupt increase in μ , underlines the strong anisotropy in the exchange interaction in CeRu2Al10 and the fact that this anisotropy is easily suppressed by electron doping.

AB - The effect of electron doping by the substitution of Rh for Ru on unconventional magnetic order in CeRu2Al10 was investigated via neutron powder diffraction. In Ce(Ru1-xRhx)2Al10 with x = 0.05, 0.12, and 0.2, reorientation of the ordered moment from the c-axis as in pure CeRu2Al10 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 increase in its size by a factor of ∼2.4, from μ = 0.43 μ B at x = 0 to μ = 1.06, 1.04, and 1.02 μ B for x = 0.05, 0.12, and 0.2, respectively. The continuous decrease in the Néel temperature T0(TN ), despite an abrupt increase in μ , underlines the strong anisotropy in the exchange interaction in CeRu2Al10 and the fact that this anisotropy is easily suppressed by electron doping.

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Influence of electron doping on magnetic order in CeRu₂Al₁₀

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