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(R: Rare earth)Hieu, N. V.*; Takeuchi, Tetsuya*; Shishido, Hiroaki*; Tonohiro, Chie*; Yamada, Tsutomu*; Nakashima, Hiroshi*; Sugiyama, Kiyohiro*; Settai, Rikio*; Matsuda, Tatsuma; Haga, Yoshinori; et al.
Journal of the Physical Society of Japan, 76(6), p.064702_1 - 064702_16, 2007/06
Times Cited Count：49 Percentile：84.45(Physics, Multidisciplinary), TbRhIn, DyRhIn, and HoRhInHieu, N. V.*; Shishido, Hiroaki*; Takeuchi, Tetsuya*; Thamizhavel, A.*; Nakashima, Hiroshi*; Sugiyama, Kiyohiro*; Settai, Rikio*; Matsuda, Tatsuma; Haga, Yoshinori; Hagiwara, Masayuki*; et al.
Journal of the Physical Society of Japan, 75(7), p.074708_1 - 074708_6, 2006/07
Times Cited Count：19 Percentile：68.29(Physics, Multidisciplinary)We grew single crystals of NdRhIn, TbRhIn, DyRhIn, and HoRhIn with the tetragonal crystal structure and measured the magnetic susceptibility and magnetization. NdRhIn is an antiferromagnet with a Neel temperature 
= 11.6 K. Below , magnetization reveals two metamagnetic transitions at Hm1 = 70 kOe and Hm2 = 93 kOe for the magnetic field along the [001] direction. The saturation moment of 2.5 
/Nd is in good agreement with the staggered Nd moment determined by the neutron diffraction experiment. These metamagnetic transitions correspond to the change of the magnetic structure. TbRhIn, DyRhIn and HoRhIn are found to be antiferromagnets with = 47.3, 28.1, and 15.8 K, respectively. The magnetization curves of these compounds are also quite similar to those of NdRhIn, revealing two metamagnetic transitions. The magnetic structures in magnetic fields are proposed by considering the exchange interactions based on the crystal structure.
(T: Co, Rh, and Ir)Hieu, N. V.*; Shishido, Hiroaki*; Thamizhavel, A.*; Settai, Rikio*; Araki, Shingo*; Nozue, Yasuo*; Matsuda, Tatsuma; Haga, Yoshinori; Takeuchi, Tetsuya*; Harima, Hisatomo*; et al.
Journal of the Physical Society of Japan, 74(12), p.3320 - 3328, 2005/12
Times Cited Count：13 Percentile：59.21(Physics, Multidisciplinary)We grew single crystals of PrCoIn, PrRhIn, and PrIrIn with the tetragonal crystal structure and measured the electrical resistivity, specific heat, magnetic susceptibility, magnetization and de Haas-van Alphen effect. These Pr compounds reveal no magnetic ordering. The topology of the Fermi surfaces is the same as that of a non-4 f reference compound LaRhIn. The cyclotron mass and/or the electronic specific heat coefficient are also approximately the same as those of LaRhIn. The magnetic susceptibility and magnetization are anisotropic, reflecting the crystal structure, which are well explained by the tetragonal crystalline electric field scheme with the singlet ground state.
Matsuda, Tatsuma; Haga, Yoshinori; Ikeda, Shugo; Yamamoto, Etsuji; Shishido, Hiroaki*; Hieu, N. V.*; Settai, Rikio*; Onuki, Yoshichika*
no journal, ,
no abstracts in English
(R: Nd, Tb, Dy and Ho)Hieu, N. V.*; Jonen, Shintaro; Metoki, Naoto; Sugiyama, Kiyohiro*; Settai, Rikio*; Matsuda, Tatsuma; Haga, Yoshinori; Takeuchi, Tetsuya*; Hagiwara, Masayuki*; Onuki, Yoshichika*
no journal, ,
The magnetic structure and the metamagnetic transition in RRhIn (R=Nd, Tb, Dy and Ho), which belong to the isostructural family of heavy fermion superconductor CeTIn and PuTGa (T=transition metal), were studied by neutron scattering. We found an antiferromagnetic structure with q
=(1/2 0 1/2) in the ground state in RRhIn. But, in the DyRhIn and HoRhIn, a weak magnetic reflection in q
=(1/2 1/2 0) was observed, suggesting a complex magnetic structure. From magnetic entropy measurements, it has been recognized that the orbital degree of freedom plays important role in DyRhIn and HoRhIn.
