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Journal Articles

$$^{57}$$Fe M$"o$ssbauer spectroscopy of NpFeGa$$_{5}$$ in magnetic field

Homma, Yoshiya*; Nasu, Saburo; Nakamura, Akio; Aoki, Dai*; Haga, Yoshinori; Metoki, Naoto; Sakai, Hironori; Ikeda, Shugo; Shiokawa, Yoshinobu*; Onuki, Yoshichika

Journal of Magnetism and Magnetic Materials, 310(2, Part1), p.440 - 442, 2007/03

$$^{57}$$Fe M$"o$ssbauer measurements of NpFeGa$$_{5}$$ has been carried out in external field at 10 kOe. The negative quadrupole splitting QS was enhanced between 70 and 110 K. Negligibly small QS in the paramagnetic state was verified by a measurement of the spectrum in the applied field of 10 kOe. A correlation between the magnetic state and the electric field gradient implies that the origin of hyperfine magnetic field is not only due to the dipole field from magnetic Np atoms, but also from magnetic Fe atoms.

Journal Articles

Hyperfine interactions of NpFeGa$$_{5}$$ observed by $$^{237}$$Np and $$^{57}$$Fe M$"o$ssbauer spectroscopy

Homma, Yoshiya*; Nasu, Saburo; Nakamura, Akio; Nakada, Masami; Aoki, Dai*; Metoki, Naoto; Yamamoto, Etsuji; Sakai, Hironori; Ikeda, Shugo; Haga, Yoshinori; et al.

Journal of the Physical Society of Japan, 75(Suppl.), p.44 - 46, 2006/08

no abstracts in English

Journal Articles

Charge disproportionation and magnetic properties in perovskite iron oxides

Kuzushita, Kaori; Morimoto, Shotaro*; Nasu, Saburo*

Physica B; Condensed Matter, 329-333(1-4), p.736 - 737, 2003/05

 Times Cited Count:9 Percentile:47.17(Physics, Condensed Matter)

The physical properties of perovskite iron oxides are closely related to the network of FeO$$_6$$ octahedra. The charge disproportionation (2Fe$$^{4+}$$ $$rightarrow$$ Fe$$^{3+}$$ + Fe$$^{5+}$$), not observed in SrFeO$$_3$$, occurs in the oxides being cut the network of FeO$$_6$$ octahedra, for example, by introduction of Fe$$^{3+}$$ by substitution La for Sr and change in the dimension by insertion of SrO layer. When Co is substituted 40% of Fe in Sr$$_3$$Fe$$_2$$O$$_7$$, the magnetic order changes to ferromagnetic from antiferromagnetic and charge disproportionation is suppressed.

Journal Articles

$$^{238}$$U M$"o$ssbauer study on the 5f-quadrupoles in uranium-based intermetallics

Tsutsui, Satoshi*; Nakada, Masami; Nasu, Saburo*; Homma, Tetsuo*; Tokiwa, Yoshifumi; Aoki, Dai*; Wisniewski, P.*; Haga, Yoshinori; Onuki, Yoshichika

Hyperfine Interactions, 141/142(1-4), p.237 - 242, 2002/06

 Times Cited Count:1 Percentile:8.48(Physics, Atomic, Molecular & Chemical)

We have determined the distribution of the 5f-quadrupoles and detected the 5f-quadrupole order in the uranium intermetallics, uranium dipnictides and UPd$$_3$$, with $$^{238}$$ Mo"ssbauer spectroscopy. We have declared that the distribution of the 5f-quadrupoles depends on the magnetic sequence in uranium dipnictides. The distribution of the 5f-quadrupole is spherical in UBi$$_2$$, while those are oblate within c-plane in UP$$_2$$, UAs$$_2$$ and USb$$_2$$. We have observed the sudden drop of the recoil-free fraction above the transition temperature of the quadrupole order in UPd$$_3$$. The present result suggests the change of the phonon states due to the quadrupole order in this compound.

Journal Articles

$$^{238}$$U and $$^{57}$$Fe M$"o$ssbauer spectroscopic study of UFe$$_{2}$$

Tsutsui, Satoshi; Nakada, Masami; Kobayashi, Yasuhiro*; Nasu, Saburo*; Haga, Yoshinori; Onuki, Yoshichika

Hyperfine Interactions, 133(1-4), p.17 - 21, 2001/11

no abstracts in English

Journal Articles

$$^{238}$$U M$"o$ssbauer study of UPt$$_{3}$$

Tsutsui, Satoshi; Nakada, Masami; Nasu, Saburo*; Haga, Yoshinori; Yamamoto, Etsuji; Kimura, Noriaki*; Onuki, Yoshichika

Journal of Magnetism and Magnetic Materials, 226-230(Part.1), p.87 - 88, 2001/05

no abstracts in English

Journal Articles

$$^{238}$$U M$"o$ssbauer spectroscopic study of UX$$_{2}$$(X=Ga, P, As, Sb)

Tsutsui, Satoshi; Nakada, Masami; Nasu, Saburo*; Haga, Yoshinori; Homma, Tetsuo; Yamamoto, Etsuji; Tokiwa, Yoshifumi; Aoki, Dai*; Wi$'s$niewski, P.*; Onuki, Yoshichika

Journal of the Physical Society of Japan, Vol.70, Supplement A, p.34 - 36, 2001/05

no abstracts in English

Journal Articles

First-order phase transition in UO$$_{2}$$; $$^{235}$$U and $$^{17}$$O NMR study

Ikushima, Kenji; Tsutsui, Satoshi; Haga, Yoshinori; Yasuoka, Hiroshi; Walstedt, R. E.; Masaki, Nobuyuki; Nakamura, Akio; Nasu, Saburo*; Onuki, Yoshichika

Physical Review B, 63(10), p.104404_1 - 104404_11, 2001/03

 Times Cited Count:73 Percentile:93.37(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

$$^{238}$$U M$"o$ssbauer study on the magnetic properties of uranium-based heavy fermion superconductors

Tsutsui, Satoshi; Nakada, Masami; Nasu, Saburo*; Haga, Yoshinori; Homma, Tetsuo; Yamamoto, Etsuji; Okuni, Hitoshi*; Onuki, Yoshichika

Hyperfine Interactions, 126(1-4), p.335 - 340, 2000/07

 Times Cited Count:6 Percentile:38.76(Physics, Atomic, Molecular & Chemical)

no abstracts in English

Journal Articles

$$^{57}$$Fe M$"o$ssbauer spectroscopic study of U$$_{6}$$Fe

Tsutsui, Satoshi; Kobayashi, Yasuhiro*; Nakada, Masami; Nasu, Saburo*; Yamamoto, Etsuji; Haga, Yoshinori; Onuki, Yoshichika

Journal of the Physical Society of Japan, 69(6), p.1764 - 1768, 2000/06

 Times Cited Count:2 Percentile:25.84(Physics, Multidisciplinary)

no abstracts in English

Journal Articles

$$^{238}$$U M$"o$ssbauer spectrosopic study of UPd$$_{2}$$Al$$_{3}$$ and URu$$_{2}$$Si$$_{2}$$

Tsutsui, Satoshi; Nakada, Masami; Nasu, Saburo*; Haga, Yoshinori; Homma, Tetsuo; Yamamoto, Etsuji; Okuni, Hitoshi*; Onuki, Yoshichika

Physica B; Condensed Matter, 281-282, p.242 - 243, 2000/06

 Times Cited Count:3 Percentile:22.75(Physics, Condensed Matter)

no abstracts in English

Journal Articles

$$^{235}$$U NMR study of antiferromagnet UO$$_{2}$$

Ikushima, Kenji; Yasuoka, Hiroshi; Tsutsui, Satoshi; Nasu, Saburo*; Masaki, Nobuyuki; Nakamura, Akio; Ueda, Yutaka*

Physica B; Condensed Matter, 281-282, p.197 - 199, 2000/06

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

no abstracts in English

Journal Articles

$$^{238}$$U Moessbauer spectroscopy of UGe$$_{2}$$

Tsutsui, Satoshi*; Nakada, Masami; Saeki, Masakatsu; Nasu, Saburo*; Haga, Yoshinori; Yamamoto, Etsuji; Onuki, Yoshichika*

Physical Review B, 60(1), p.37 - 39, 1999/07

 Times Cited Count:11 Percentile:55.59(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

Nuclear magnetic moment of the first excited state (I=2$$^{+}$$) of $$^{238}$$U

Tsutsui, Satoshi*; Nasu, Saburo*; Nakada, Masami; ; Saeki, Masakatsu; *; *; Nakamura, Akio

Journal of the Physical Society of Japan, 67(8), p.2641 - 2644, 1998/08

 Times Cited Count:8 Percentile:54.55(Physics, Multidisciplinary)

no abstracts in English

Journal Articles

Observation of $$^{235}$$U NMR in the Antiferromagnetic state of UO$$_{2}$$

*; *; Tsutsui, Satoshi*; Saeki, Masakatsu; Nasu, Saburo*; *

Journal of the Physical Society of Japan, 67(1), p.65 - 66, 1998/01

 Times Cited Count:16 Percentile:81.15(Physics, Multidisciplinary)

no abstracts in English

Journal Articles

Moessbauer study of uranium compounds

Tsutsui, Satoshi*; Nakada, Masami; Kobayashi, Yasuhiro*; ; Saeki, Masakatsu; Nasu, Saburo*; Nakamura, Akio; Haga, Yoshinori; Homma, Tetsuo*; Yamamoto, Etsuji; et al.

Physics of Strongly Correlated Electron Systems (JJAP Series 11), p.266 - 268, 1998/00

no abstracts in English

Journal Articles

$$^{238}$$U Moessbauer spectroscopy and its application to the study on magnetic properties of uranium compounds

Tsutsui, Satoshi*; Saeki, Masakatsu; Nasu, Saburo*

Kotai Butsuri, 32(10), p.821 - 828, 1997/00

no abstracts in English

Oral presentation

Moessbauer soectroscopic study of neptunium compounds, 2

Homma, Yoshiya*; Nasu, Saburo; Nakamura, Akio; Nakada, Masami; Metoki, Naoto; Aoki, Dai*; Sakai, Hironori; Ikeda, Shugo; Shiokawa, Yoshinobu*; Haga, Yoshinori; et al.

no journal, , 

no abstracts in English

18 (Records 1-18 displayed on this page)
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