11B NMR Study of Magnetism in RRh3B2 (R = La, Ce, Nd, Sm, Eu and Gd)

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  • Kishimoto Yutaka
    Department of Physics, Faculty of Engineering, University of Tokushima
  • Kawasaki Yu
    Department of Physics, Faculty of Engineering, University of Tokushima
  • Ohno Takashi
    Department of Physics, Faculty of Engineering, University of Tokushima

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  • 11B NMR Study of Magnetism in RRh3B2 (R = La, Ce, Nd, Sm, Bu and Gd)
  • <sup>11</sup>B NMR Study of Magnetism in RRh<sub>3</sub>B<sub>2</sub>(R = La, Ce, Nd, Sm, Eu and Gd)

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In order to study the magnetism in RRh3B2 (R=La, Ce, Nd, Sm, Eu and Gd), 11B NMR has been measured systematically. LaRh3B2 was shown to be simply paramagnetic in the normal state, and GdRh3B2 and NdRh3B2 ferromagnetic with the well localized moments. In CeRh3B2, the K–χ plot and 1⁄T1 can be interpreted in a localized moment model with a large reduction in the effective moment, and a small magnetic moment is considered to be localized at the Ce site below Tc. For SmRh3B2, 1⁄T1 cannot be explained by the localized moment model, and it was found that the antiferromagnetic spin fluctuation exists in the paramagnetic state. The temperature dependence of 1⁄T1T indicates that EuRh3B2 is a weak antiferromagnet.

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