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Magnetism on Mg$$_{1-x}$$Zn$$_x$$C$$_y$$Ni$$_3$$

Mg$$_{1-x}$$Zn$$_x$$C$$_y$$Ni$$_3$$の磁性

上原 政智*; 山崎 敬大*; 郡 達也*; 樫田 健史*; 君嶋 義英*; 大石 一城

Uehara, Masatomo*; Yamazaki, Takahiro*; Kori, Tatsuya*; Kashida, Takefumi*; Kimishima, Yoshihide*; Oishi, Kazuki

磁化測定及びミュオンスピン緩和法($$mu$$SR)を用いてMg$$_{1-x}$$Zn$$_x$$C$$_y$$Ni$$_3$$の磁気相図を得た。超伝導相は$$x$$の増加あるいは$$y$$の減少とともに消えた。$$y$$の小さい領域では強磁性相関、あるいは強磁性秩序が見られた。相図では超伝導に加え強磁性が見られており、強磁性と超伝導の相関が示唆される一方、20mKまでの$$mu$$SRでは超伝導試料における強磁性の共存は見られなかった。

The magnetic phase diagram for Mg$$_{1-x}$$Zn$$_x$$C$$_y$$Ni$$_3$$ has been tentatively constructed based on magnetization and muon spin relaxation ($$mu$$SR) measurements. The superconducting phase was observed to fade as $$x$$ ($$y$$) increases (decreases). The low $$y$$ samples show early stages of long-range ferromagnetism, or complete long-range ferromagnetism. In the phase diagram, the ferromagnetic phase exists in addition to the superconducting phase, suggesting that there is some correlation between superconductivity and ferromagnetism, even though the coexistence of ferromagnetism and superconductivity is not observed from the $$mu$$SR measurements down to 20 mK for the superconducting sample.

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パーセンタイル:53.86

分野:Chemistry, Multidisciplinary

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