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Journal Articles

Neutron scattering study on the field-induced antiferro-quadrupolar ordering in the heavy fermion superconductor PrOs$$_{4}$$Sb$$_{12}$$

Metoki, Naoto; Kaneko, Koji; Araki, Shingo; Kogi, Masafumi*; Iwasa, Kazuaki*; Kuwahara, Keitaro*; Bernhoeft, N.*; Mignot, J.-M.*; Gukasov, A.*; Sato, Hideyuki*; et al.

Journal of Magnetism and Magnetic Materials, 272-276(Suppl.), p.e91 - e92, 2004/05

https://doi.org/10.1016/j.jmmm.2003.11.315
 Times Cited Count：1 Percentile：7.1(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

Neutron scattering study on the crystal structure, magnetic ordering, and crystalline electric field excitations in an uranium metallic compound U$$_{3}$$Pd$$_{20}$$Si$$_{6}$$

Tateiwa, Naoyuki*; Metoki, Naoto; Koike, Yoshihiro; Oikawa, Kenichi; Kimura, Noriaki*; Komatsubara, Takemi*; Aoki, Haruyoshi*

Journal of the Physical Society of Japan, 70(8), p.2425 - 2436, 2001/08

https://doi.org/10.1143/JPSJ.70.2425
 Times Cited Count：14 Percentile：61.76(Physics, Multidisciplinary)

no abstracts in English

Oral presentation

Neutron scattering study on NdB$$_4$$

Metoki, Naoto; Yamauchi, Hiroki; Matsuda, Masaaki*; Fernandez Baca, J.*; Yoshida, Masahiro*; Yoshizawa, Hideki*; Hagihara, Masato*; Watanuki, Ryuta*

no journal, , 

We report the magnetic structures and propose the mechanism of the successive transition based on the $$f$$-electron state revealed by CEF excitation. We confirmed the non-collinear `all-in all-out' structure ($$Gamma_4$$) of the in-plane moment. We found that the magnetic moment along the $$c$$-axis $$m_c$$ showed diagonally antiferromagnetic structure ($$Gamma_{10}$$). The unusual magnetic ordering is phenomenologically understood via Landau theory. We also found that a long-period incommensurate modulation of the ($$0,0,1/2$$) antiferromagnetic structure of $$m_c$$ with the propagation $$q_{s1}$$ = (0.14, 0.14, 0.1) and $$q_{s2}$$ = (0.2, 0, 0.1) in phase III and IV, respectively. We found pseudo-quartet $$f$$-electron state based on $$J_z=pm5/2$$ and $$pm7/2$$. We can propose the intermediated phase as the magnetically ordered phase of $$J_x$$ while $$J_z$$ and $$O_{zx}$$ coupling phase tabilized in low temperatures.

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