Sakiyo Tanimoto

Publications (2)0 Total impact

• Source

  Available from: ArXiv

  Article: High-field magnetization and magnetic phase transition in CeOs2Al10

  Akihiro Kondo, Junfeng Wang, Koichi Kindo, Yuta Ogane, Yukihiro Kawamura, Sakiyo Tanimoto, Takashi Nishioka, Daiki Tanaka, Hiroshi Tanida, Masafumi Sera
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  ABSTRACT: We have studied the magnetization of CeOs2Al10 in high magnetic fields up to 55 T for H // a and constructed the magnetic phase diagram for H // a. The magnetization curve shows a concave H dependence below T_max \sim40 K which is higher than the transition temperature T_0 \sim29 K. The magnetic susceptibility along the a-axis shows a smooth and continuous decrease down to \sim20 K below T_max \sim40 K without showing an anomaly at T_0. From these two results, a Kondo singlet is formed below T_max and coexists with the antiferro magnetic order below T_0. We also propose that the larger suppression of the spin degrees of freedom along the a-axis than along the c-axis below T_max is associated with the origin of the antiferro magnetic component.
  05/2011;
• Article: High-field magnetization and magnetic phase transition in CeOs_ {2} Al_ {10}

  Akihiro Kondo, Junfeng Wang, Koichi Kindo, Yuta Ogane, Yukihiro Kawamura, Sakiyo Tanimoto, Takashi Nishioka, Daiki Tanaka, Hiroshi Tanida, Masafumi Sera
  [show abstract] [hide abstract]
  ABSTRACT: We have studied the magnetization of CeOs2Al10 in high magnetic fields up to 55 T for H∥a and constructed the magnetic phase diagram for H∥a. The magnetization curve shows a concave H dependence below Tmax~40 K, which is higher than the transition temperature T0~29 K. The magnetic susceptibility along the a axis, χa, shows a smooth and continuous decrease down to ~20 K below Tmax~40 K without showing an anomaly at T0. From these two results, a Kondo singlet is formed below Tmax and coexists with the antiferromagnetic order below T0. We also propose that the larger suppression of the spin degrees of freedom along the a axis than along the c axis below Tmax is associated with the origin of the antiferromagnetic component.
  Phys. Rev. B. 83(18).