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Journal Articles

Single crystal growth and crystal structure of ThRhIn$$_5$$ and LuCoGa$$_5$$

Matsuda, Tatsuma; Haga, Yoshinori; Sakai, Hironori; Ikeda, Shugo; Onuki, Yoshichika

Journal of the Physical Society of Japan, 75(Suppl.), p.85 - 87, 2006/08

Recently quasi-two-dimensional electron state in rare earth and actinide compounds with HoCoGa$$_5$$-type tetragonal crystal structure was attracted a lot attention in relation to heavy fermion superconductivity observed in CeCoIn$$_5$$, CeIrIn$$_5$$ and PuCoGa$$_5$$. In order to elucidate the role of $$f$$ electron in these compounds, it is necessary to compare their electronic state with that of lanthanum and thorium compounds which do not possess the $$f$$-electrons. The number of valence electrons in the thorium compound is the same as that of the corresponding 4$$f^1$$-itinerant cerium compound. We have recently tried to make thorium 115 compounds by indium flux method and have succeeded in discovering the new material of ThRhIn$$_5$$. Crystal structure and quality were confirmed by X-ray diffraction, fluorescent X-ray analysis and EPMA. The lattice parameters were determined to be 4.681(6) $AA and 7.54(1) AA for $a$$ and $$c$$, respectively. The positional parameter $$z$$ of In(4$$i$$) site was also determined to be $$z=0.3069(1)$$.

Journal Articles

Properties of minor actinide compounds relevant to nuclear fuel technology

Minato, Kazuo; Takano, Masahide; Nishi, Tsuyoshi; Ito, Akinori; Akabori, Mitsuo

Recent Advances in Actinide Science, p.317 - 322, 2006/06

To reduce the radiotoxicity of the high-level waste and to use the repository efficiently, recycling of minor actinides (MA: Np, Am, Cm) as well as plutonium is an option for the future nuclear fuel cycle. For MA-bearing fuel development, new facilities with inert atmosphere were installed and the thermal properties of minor actinide compounds, especially nitrides and oxides, were measured. Minor actinide nitrides were prepared by carbothermic reduction of the oxides. Lattice parameter and its thermal expansion were measured by high-temperature X-ray diffraction, and thermal diffusivity by laser flash method.

Journal Articles

Oxygen potential and defect structure of oxygen-excess pyrochlore Ce$$_{2}$$Zr$$_{2}$$O$$_{7+x}$$

Otobe, Haruyoshi; Nakamura, Akio; Yamashita, Toshiyuki; Minato, Kazuo

Journal of Physics and Chemistry of Solids, 66(2-4), p.329 - 334, 2005/02

 Times Cited Count:20 Percentile:35.67(Chemistry, Multidisciplinary)

Pyrochlore-type (P-type) zirconias have been attracting significant research interest as disposable forms of high-level radioactive waste. In this work, we have clarified the oxygen potentials (g(O$$_{2}$$)) vs. oxygen nonstoichiometry (x) and temperature relations of P-type Ce$$_{2}$$Zr$$_{2}$$O$$_{7+x}$$ by the emf method and determined the lattice parameters (a0) with respect to x by XRD method.

Journal Articles

Lattice parameter expansion by self-irradiation damage of $$^{244}$$Cm-$$^{240}$$Pu oxide and mononitride

Takano, Masahide; Ito, Akinori; Akabori, Mitsuo; Ogawa, Toru; Numata, Masami; Kizaki, Minoru

Journal of Nuclear Science and Technology, 39(Suppl.3), p.842 - 845, 2002/11

no abstracts in English

Journal Articles

Radiation damage in UO$$_{2}$$ bombarded with iodine and nickel ions at energies around 100 MeV

Hayashi, Kimio; ; Fukuda, Kosaku

Advances in Science and Technology, 24, p.439 - 446, 1999/00

no abstracts in English

Journal Articles

Characterization of technetium-ruthenium alloys for transmutation of technetium metal

Shirasu, Yoshiro; Minato, Kazuo

Proc. of the Int. Conf. on Future Nuclear Systems (GLOBAL'99)(CD-ROM), 7 Pages, 1999/00

no abstracts in English

Journal Articles

Properties of technetium and technetium-ruthenium alloys for transmutation of technetium

Minato, Kazuo; Shirasu, Yoshiro

Proceedings of 2nd Japanese-Russian Seminar on Technetium, p.77 - 78, 1999/00

no abstracts in English

Journal Articles

Thermal expansion and thermal conductivity of Cs$$_{2}$$CrO$$_{4}$$

Takano, Masahide; Minato, Kazuo; Fukuda, Kosaku; Sato, Seichi*; Ohashi, Hiroshi*

Journal of Alloys and Compounds, 278, p.277 - 282, 1998/00

 Times Cited Count:1 Percentile:80.15(Chemistry, Physical)

no abstracts in English

Journal Articles

Preparation and characterisation of technetium metal and technetium-ruthenium alloys

Minato, Kazuo; Shirasu, Yoshiro

Proc. of 5th Int. Information Exchange Meeting on Actinide and Fission Product Partitioning, p.223 - 230, 1998/00

no abstracts in English

Journal Articles

Thermal expansion and thermal conductivity of cesium molybdate

Minato, Kazuo; Takano, Masahide; Fukuda, Kosaku; Sato, Seichi*; Ohashi, Hiroshi*

Journal of Alloys and Compounds, 255, p.18 - 23, 1997/00

 Times Cited Count:12 Percentile:37.21(Chemistry, Physical)

no abstracts in English

Journal Articles

The Investigation of selected Np-Zr alloys by X-ray diffraction up to 700$$^{circ}$$C

Okamoto, Yoshihiro; R.G.Haire*; J.K.Gibson*; Ogawa, Toru

Journal of Alloys and Compounds, 232, p.302 - 306, 1996/00

 Times Cited Count:8 Percentile:42.41(Chemistry, Physical)

no abstracts in English

Journal Articles

Consideration of the thermodynamic and magnetic properties of NaCl-type uranium, neptunium, and plutonium compounds

Arai, Yasuo; Omichi, Toshihiko

Journal of Solid State Chemistry, 115(1), p.66 - 70, 1995/02

 Times Cited Count:1 Percentile:93(Chemistry, Inorganic & Nuclear)

no abstracts in English

Journal Articles

Radiation damage of UO$$_{2}$$ implanted with 100 MeV iodine ions

; ; Fukuda, Kosaku

Journal of Alloys and Compounds, 213-214, p.351 - 353, 1994/00

 Times Cited Count:5 Percentile:51.47(Chemistry, Physical)

no abstracts in English

Journal Articles

The Relation between lattice parameters of NaCl type U,Np and Pu compounds and their magnetic and binding properties

Omichi, Toshihiko; Arai, Yasuo

Proc. of the 4th Int. Symp. on Advanced Nuclear Energy Research (JAERI-CONF 1/JAERI-M 92-207), p.204 - 208, 1992/12

no abstracts in English

Journal Articles

Effect of additives on irradiation-induced change of lattice parameter in ThO$$_{2}$$

Akabori, Mitsuo; Fukuda, Kosaku

Journal of Nuclear Science and Technology, 28(9), p.841 - 847, 1991/09

no abstracts in English

Journal Articles

Lattice parameter of UN-PuN solid solution

; Arai, Yasuo; Iwai, Takashi; Omichi, Toshihiko

Journal of Nuclear Science and Technology, 28(7), p.689 - 691, 1991/07

no abstracts in English

Journal Articles

Thermal expansion measurements in a La$$_{1.85}$$Sr$$_{0.15}$$CuO$$_{4}$$ single crystal superconductor by X-ray diffraction

Maeta, Hiroshi; Kato, Teruo; Ono, Fumihisa*; Haruna, K.*; *; *

Physica C, 185-189, p.1383 - 1384, 1991/00

 Times Cited Count:6 Percentile:55.64(Physics, Applied)

no abstracts in English

Journal Articles

X-ray diffraction study of transition metals after fast neutron irradiation at low temperature

; *

Mater.Sci.Forum, 15-18, p.1099 - 1104, 1987/00

no abstracts in English

Journal Articles

Stoichiometry of fully oxidized PuO$$_{2}$$-NdO$$_{1}$$$$_{.}$$$$_{5}$$ and PuO$$_{2}$$-YO$$_{1}$$$$_{.}$$$$_{5}$$ solid solutions

; ; ;

Journal of Nuclear Science and Technology, 19(8), p.681 - 683, 1982/00

 Times Cited Count:2 Percentile:55.75(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Recovery of lattice spacing in HCP metals after fast-neutron irradiation at 5K

Point Defects and Defect Interactions in Metals, p.149 - 152, 1982/00

no abstracts in English

23 (Records 1-20 displayed on this page)