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Journal Articles

Pressure-temperature-field phase diagram in the ferromagnet U$$_3$$P$$_4$$

Araki, Shingo*; Hayashida, Minami*; Nishiumi, Naoto*; Manabe, Hiroki*; Ikeda, Yoichi*; Kobayashi, Tatsuo*; Murata, Keizo*; Inada, Yoshihiko*; Wi$'s$niewski, P.*; Aoki, Dai*; et al.

Journal of the Physical Society of Japan, 84(2), p.024705_1 - 024705_8, 2015/02

 Times Cited Count:7 Percentile:54.9(Physics, Multidisciplinary)

Journal Articles

Metamagnetic transition of itinerant ferromagnet U$$_3$$P$$_4$$ under high pressure

Araki, Shingo*; Hayashida, Minami*; Nishiumi, Naoto*; Manabe, Hiroki*; Ikeda, Yoichi*; Kobayashi, Tatsuo*; Murata, Keizo*; Inada, Yoshihiko*; Wi$'s$niewski, P.*; Aoki, Dai*; et al.

JPS Conference Proceedings (Internet), 3, p.011081_1 - 011081_6, 2014/06

Journal Articles

Soft X-ray absorption magnetic circular dichroism study of ferromagnetic superconductor UGe$$_2$$

Okane, Tetsuo; Okamoto, Jun*; Mamiya, Kazutoshi*; Fujimori, Shinichi; Takeda, Yukiharu; Saito, Yuji; Muramatsu, Yasuji*; Fujimori, Atsushi*; Haga, Yoshinori; Yamamoto, Etsuji; et al.

Journal of the Physical Society of Japan, 75(2), p.024704_1 - 024704_5, 2006/02

 Times Cited Count:10 Percentile:55.59(Physics, Multidisciplinary)

no abstracts in English

Journal Articles

High-quality single crystal growth of UGe$$_2$$ and URhGe

Yamamoto, Etsuji; Haga, Yoshinori; Matsuda, Tatsuma; Ikeda, Shugo; Inada, Yoshihiko*; Settai, Rikio*; Onuki, Yoshichika*

Journal of Magnetism and Magnetic Materials, 272-276(Suppl.), p.e171 - e172, 2004/05

 Times Cited Count:1 Percentile:7.49(Materials Science, Multidisciplinary)

We searched for an experimental condition of crystal growth for a ferromagnetic superconductors of UGe$$_2$$ and URhGe. Samples were prepared for both polycrystalline and single crystals, which were arc-melted and grown by the Czochralski-pulling method in a tetra-arc furnace, respectively. Annealing is an important process to enhance sample-quality, namely the residual resistivity ratio. We tried to anneal the samples under various temperatures, which were wrapped by the Ta-foil and vacuum-sealed in the quartz ample, together with the solid state electrotransport method in ultra-high vacuum. The highest residual resistivity ratio was 900 for UGe$$_2$$ and 41 for URhGe.

Journal Articles

Magnetic properties of U$$_2$$RhGa$$_8$$ and U$$_2$$FeGa$$_8$$

Ikeda, Shugo; Okubo, Tomoyuki*; Inada, Yoshihiko*; Tokiwa, Yoshifumi; Kaneko, Koji; Matsuda, Tatsuma; Yamamoto, Etsuji; Haga, Yoshinori; Onuki, Yoshichika

Journal of Physics; Condensed Matter, 15(28), p.S2015 - S2018, 2003/07

 Times Cited Count:6 Percentile:36.6(Physics, Condensed Matter)

no abstracts in English

Journal Articles

Magnetic and Fermi surface properties of UTGa$$_{5}$$(T:Fe, Co and Pt)

Ikeda, Shugo; Tokiwa, Yoshifumi*; Okubo, Tomoyuki*; Yamada, Mineko*; Matsuda, Tatsuma; Inada, Yoshihiko*; Settai, Rikio*; Yamamoto, Etsuji; Haga, Yoshinori; Onuki, Yoshichika

Physica B; Condensed Matter, 329-333(2), p.610 - 611, 2003/05

 Times Cited Count:13 Percentile:57.27(Physics, Condensed Matter)

no abstracts in English

Journal Articles

Quasi-two dimensional electronic state of the antiferromagnet UPtGa$$_5$$

Ikeda, Shugo; Tokiwa, Yoshifumi*; Haga, Yoshinori; Yamamoto, Etsuji; Okubo, Tomoyuki*; Yamada, Mineko*; Nakamura, Noriko*; Sugiyama, Kiyohiro*; Kindo, Koichi*; Inada, Yoshihiko*; et al.

Journal of the Physical Society of Japan, 72(3), p.576 - 581, 2003/03

 Times Cited Count:41 Percentile:83.42(Physics, Multidisciplinary)

no abstracts in English

Journal Articles

Single crystal growth and annealing temperature of ferromagnet URhGe

Yamamoto, Etsuji; Haga, Yoshinori; Matsuda, Tatsuma; Inada, Yoshihiko*; Settai, Rikio*; Tokiwa, Yoshifumi*; Onuki, Yoshichika

Acta Physica Polonica B, 34(2), p.1059 - 1062, 2003/00

no abstracts in English

Journal Articles

Magnetic and electrical properties of UIr

Yamamoto, Etsuji; Haga, Yoshinori; Matsuda, Tatsuma; Nakamura, Akio; Settai, Rikio*; Inada, Yoshihiko*; Sugawara, Hitoshi*; Sato, Hideyuki*; Onuki, Yoshichika

Journal of Nuclear Science and Technology, 39(Suppl.3), p.187 - 190, 2002/11

We succeeded in growing a high-quality single crystal of UIr with the monoclinic PbBi-type structure by the Czochralski pulling method in a tetra-arc furnace. The magnetization measurement indicates that UIr is an Ising-like ferromagnet with the Curie temperature $$T_{rm C}$$= 46 K. The magnetic moment is found to be oriented along the [1 0 $=1] direction in the (010) plane. The saturated moment is 0.5 $mu_{rm B}$$/U. The magnetic property, reflected in the magnetic susceptibility, electrical resistivity, Hall coefficient and thermoelectric power, is highly anisotropic. We also observed the de Haas-van Alphen (dHvA) oscillation. All the detected branches have large cyclotron effective masses ranging from 9.6 to 32 $$m_0$$. They are consistent with the electronic specific heat coefficient $$gamma$$=49 mJ/K$$^2cdot$$mol.

Journal Articles

Fermi surface study in uranium-based intermetallic compounds

Haga, Yoshinori; Yamamoto, Etsuji; Tokiwa, Yoshifumi; Aoki, Dai*; Inada, Yoshihiko*; Settai, Rikio*; Maehira, Takahiro; Yamagami, Hiroshi*; Harima, Hisatomo*; Onuki, Yoshichika

Journal of Nuclear Science and Technology, 39(Suppl.3), p.56 - 62, 2002/11

Fermi surfaces of uranium compounds are investigated by de Haas-van Alphen (dHvA) effect. Band calculations well reproduce the Fermi surfaces of non-magnetic itinerant systems such as USi$$_{3}$$, UC, UAl$$_{3}$$. Fermi surfaces of the heavy fermion compounds, where the strong correlation between carriers are important, are also explained by band calculations, except for their unusually large mass enhancement. We have also observed dHvA oscillations in the superconducting mixed states in heavy fermion superconductors such as URu$$_{2}$$Si$$_{2}$$, UPd$$_{2}$$Al$$_{3}$$ and CeRu$$_{2}$$. A significan field dependence of cyclotron effective mass and scattering life time were observed.

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

 Times Cited Count:20 Percentile:68.32(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.

Journal Articles

De Haas-van Alphen effect in UIr

Yamamoto, Etsuji; Haga, Yoshinori; Shishido, Hiroaki*; Nakawaki, Hirokazu*; Inada, Yoshihiko*; Settai, Rikio*; Onuki, Yoshichika

Physica B; Condensed Matter, 312-313, p.302 - 303, 2002/03

 Times Cited Count:16 Percentile:62.41(Physics, Condensed Matter)

We have succeeded in growing a high-quality single crystal of UIr with the monoclinic structure by the Czochralski pulling method in a tetra-arc furnace. UIr is a ferromagnetic compound. Its Curie temperature $$T_C$$ is 46 K and the magnetic moment is found to be oriented along the [1 0 $=1] direction by the magnetization measurement. The magnetic moment is 0.5 $mu_{rm B}$$/U. We have observed the de Haas-van Alphen (dHvA) oscillation. All the detected branches have heavy cyclotron effective masses ranging from 9.6 to 32 $$m_0$$. They are consistent with the electronic specific heat coefficient $$gamma$$=48.5 mJ/K$$^2cdot$$mol.

Journal Articles

De Haas-van Alphen effect and Fermi surface in UC

Yamamoto, Etsuji; Haga, Yoshinori; Maehira, Takahiro*; Inada, Yoshihiko*; Murakawa, Masao*; Onuki, Yoshichika; Hasegawa, Akira*

Journal of Magnetism and Magnetic Materials, 226-230(Part.1), p.51 - 53, 2001/05

no abstracts in English

Journal Articles

Quasi-two-dimensional Fermi surfaces of the heavy fermion superconductor CeIrIn$$_5$$

Haga, Yoshinori; Inada, Yoshihiko*; Harima, Hisatomo*; Oikawa, Kenichi*; Murakawa, Masao*; Nakawaki, Hirokazu*; Tokiwa, Yoshifumi; Aoki, Dai*; Shishido, Hiroaki*; Ikeda, Shugo*; et al.

Physical Review B, 63(6), p.060503_1 - 060503_4, 2001/02

 Times Cited Count:144 Percentile:97.63(Materials Science, Multidisciplinary)

We observed the de Haas-van Alphen oscillation in the heavy fermion compound CeIrIn5. The topology of the Fermi surface is found to be neary cylindrical, reflecting the unique tetragonal structure. Observed branches are well explained by the 4f-itinerant band model. The cyclotron masses are large, 20-30 m0, which are one order larger than the corresponding band masses.

Journal Articles

De Haas-van Alphen effect in a heavy fermion superconductor UPd$$_{2}$$Al$$_{3}$$

Haga, Yoshinori; Inada, Yoshihiko*; Sakurai, Kenji*; Tokiwa, Yoshifumi; Yamamoto, Etsuji; Homma, Tetsuo*; Onuki, Yoshichika*

Physica B; Condensed Matter, 284-288, p.1291 - 1292, 2000/07

 Times Cited Count:0 Percentile:0(Physics, Condensed Matter)

no abstracts in English

Journal Articles

Magnetic, elastic, transport and fermi surface properties of a ferromagnetic compound UGa$$_{2}$$

Homma, Tetsuo; Yamamoto, Etsuji; Haga, Yoshinori; Settai, Rikio*; Araki, Shingo*; Inada, Yoshihiko*; Takeuchi, Tetsuya*; Kuwahara, Keitaro*; Amitsuka, Hiroshi*; Sakakibara, T.*; et al.

Physica B; Condensed Matter, 281-282, p.195 - 196, 2000/06

 Times Cited Count:2 Percentile:16.19(Physics, Condensed Matter)

no abstracts in English

Journal Articles

Fermi surface of UB$$_{4}$$ studied by the de Haas-van Alphen oscillation and magnetoresistance experiments

Yamamoto, Etsuji; Homma, Tetsuo; Haga, Yoshinori; Inada, Yoshihiko*; Aoki, Dai*; Tokiwa, Yoshifumi; Suzuki, N.*; Miyake, Kosaku*; Onuki, Yoshichika

Physica B; Condensed Matter, 281-282, p.767 - 768, 2000/06

 Times Cited Count:1 Percentile:8.92(Physics, Condensed Matter)

no abstracts in English

Journal Articles

Observation of heavy electrons in UPd$$_{2}$$Al$$_{3}$$

Haga, Yoshinori; Inada, Yoshihiko*; Yamagami, Hiroshi*; Sakurai, Kenji*; Tokiwa, Yoshifumi; Yamamoto, Etsuji; Homma, Tetsuo*; Onuki, Yoshichika*

Physica B; Condensed Matter, 281-282, p.780 - 781, 2000/06

 Times Cited Count:0 Percentile:0(Physics, Condensed Matter)

no abstracts in English

Journal Articles

Fermi surface properties of USi$$_{3}$$

Tokiwa, Yoshifumi; Harima, Hisatomo*; Aoki, Dai*; Nogiri, Sayaka*; Murakawa, Masao*; Miyake, Kosaku*; Watanabe, Narumi*; Settai, Rikio*; Inada, Yoshihiko*; Sugawara, Hitoshi*; et al.

Journal of the Physical Society of Japan, 69(4), p.1105 - 1112, 2000/04

 Times Cited Count:21 Percentile:72.87(Physics, Multidisciplinary)

no abstracts in English

Journal Articles

De Haas-van Alphen oscillation in both the normal and superconducting mixed states of UPd$$_{2}$$Al$$_{3}$$

Haga, Yoshinori; Inada, Yoshihiko*; Sakurai, Kenji*; Tokiwa, Yoshifumi; Yamamoto, Etsuji; Homma, Tetsuo*; Onuki, Yoshichika*

Journal of the Physical Society of Japan, 68(2), p.342 - 345, 1999/02

 Times Cited Count:18 Percentile:83.37(Physics, Multidisciplinary)

no abstracts in English

24 (Records 1-20 displayed on this page)