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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.

Journal Articles

Resonant X-ray scattering study on the filled skutterudite PrFe$$_4$$P$$_{12}$$

Ishii, Kenji; Inami, Toshiya; Murakami, Yoichi; Hao, L.*; Iwasa, Kazuaki*; Kogi, Masafumi*; Aoki, Yuji*; Sugawara, Hitoshi*; Sato, Hideyuki*; Imada, Shin*; et al.

Physica B; Condensed Matter, 329-333(1-4), p.467 - 468, 2003/05

https://doi.org/10.1016/S0921-4526(02)02037-9
 Times Cited Count：6 Percentile：35.62(Physics, Condensed Matter)

Resonant x-ray scattering study was carried out to investigate an anomalous ordered state ($$T_A$$ = 6.5 K) in the filled skutterudite PrFe$$_4$$P$$_{12}$$. At the Pr-$$L_{III}$$ absorption edge, we observed resonant features in $$h+k+l$$ = odd reflections, which are forbidden in the $$bcc$$ structure above $$T_A$$. Because these reflections contain the difference of anomalous scattering factor between two Pr atoms in the $$bcc$$ unit cell, and the ordered state is attributed to the ordering of two different electronic states of Pr.

Journal Articles

De Haas-van Alphen effect on PrRu$$_4$$Sb$$_{12}$$

Matsuda, Tatsuma; Abe, Keisuke*; Watanuki Fumihito*; Sugawara, Hitoshi*; Aoki, Yuji*; Sato, Hideyuki*; Inada, Yoshihiko*; Settai, Rikio*; Onuki, Yoshichika

Physica B; Condensed Matter, 312-313, p.832 - 833, 2002/03

https://doi.org/10.1016/S0921-4526(01)01260-1
 Times Cited Count：20 Percentile：67.09(Physics, Condensed Matter)

The angular dependence of de Haas-van Alphen effect has been measured to reveal the electronic structure of filled skutterudite PrRu$$_4$$Sb$$_{12}$$. The angular dependence of de Haas-van Alphen frequency of PrRu$$_4$$Sb$$_{12}$$ is in good agreement with that of LaRu$$_4$$Sb$$_{12}$$. Compared with PrFe$$_4$$P$$_{12}$$, no anomalous enhancement of cyclotron effective mass has been observed in this system. This change of electronic structure is attributed to the difference in the $$c-f$$ hybridization strength, which is expected from the large difference in the lattice parameters.

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