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Journal Articles

$$^{31}$$P-NMR study of the uranium-based filled skutterudite compound UFe$$_4$$P$$_{12}$$

Tokunaga, Yo; Matsuda, Tatsuma; Sakai, Hironori; Kato, Harukazu*; Kambe, Shinsaku; Walstedt, R. E.; Haga, Yoshinori; Onuki, Yoshichika; Yasuoka, Hiroshi

Physical Review B, 71(4), p.045124_1 - 045124_5, 2005/01

https://doi.org/10.1103/PhysRevB.71.045124
 Times Cited Count：10 Percentile：42.74(Materials Science, Multidisciplinary)

$$^{31}$$P NMR measurements have been performed on the uranium-based ferromagnetic insulator UFe$$_4$$P$$_{12}$$ with $$T_C= 3.15$$ K. The field-orientation dependence of the hyperfine interaction has been measured using a single crystal, and the results compared with a point-dipolar field calculation assuming local moments at the U sites. We have also measured the field and temperature dependence of the nuclear spin-lattice relaxation rate ($$1/T_1$$) in several fields between 1.0 and 5.5 T at temperatures between 1.4 and 300 K. The results are discussed on the basis of a localized picture for the uranium 5f electrons.

Journal Articles

Small saturation moment due to the crystalline electric field effect for $$T_h$$ site symmetry in the ferromagnet UFe$$_4$$P$$_{12}$$

Matsuda, Tatsuma; Galatanu, A.; Haga, Yoshinori; Ikeda, Shugo; Yamamoto, Etsuji; Hedo, Masato*; Uwatoko, Yoshiya*; Takeuchi, Tetsuya*; Sugiyama, Kiyohiro*; Kindo, Koichi*; et al.

Journal of the Physical Society of Japan, 73(9), p.2533 - 2538, 2004/09

https://doi.org/10.1143/JPSJ.73.2533
 Times Cited Count：8 Percentile：48.29(Physics, Multidisciplinary)

Electrical resistivity, specific heat, magnetic susceptibility and high-field magnetization measurements have been performed on the ferromagnet UFe$$_{4}$$P$$_{12}$$ with the cubic crystal structure. The ferromagnetic ordering at $$T_{rm C}$$,=,3.1 K, a small saturation moment of 1.3 $$mu_{rm B}$$/U, together with the temperature dependence of the magnetic susceptibility, are found to be well explained by considering the 5$$f^2$$ crystalline electric field schemes for $$T_{h}$$ site symmetry and the magnetic exchange interaction.

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