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Properties and collapse of the ferromagnetism in UCo$$_{1-x}$$Ru$$_{x}$$Al studied in single crystals

Pospisil, J.; Opletal, P.*; Vali$v{s}$ka, M.*; 徳永 陽  ; Stunault, A.*; 芳賀 芳範   ; 立岩 尚之   ; Gillon, B.*; 本多 史憲*; 山村 朝雄*; Ni$v{z}$$v{n}$ansky, V.*; 山本 悦嗣  ; 青木 大*

Pospisil, J.; Opletal, P.*; Vali$v{s}$ka, M.*; Tokunaga, Yo; Stunault, A.*; Haga, Yoshinori; Tateiwa, Naoyuki; Gillon, B.*; Honda, Fuminori*; Yamamura, Tomoo*; Ni$v{z}$$v{n}$ansky, V.*; Yamamoto, Etsuji; Aoki, Dai*

We have investigated the ferromagnetic (FM) phase, which suddenly develops in UCo$$_{1-x}$$Ru$$_{x}$$Al and is isolated by paramagnetic regions on both sides from the parent UCoAl and URuAl. We conclude that both criticalities are influenced by disorder. Criticality on the UCoAl side has character of a clean FM metal, while on the Ru rich side it has the character of a magnetically inhomogeneous system involving a Griffiths phase.

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パーセンタイル:55.7

分野:Physics, Multidisciplinary

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