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  1. No Access

    Article

    A metallofullerene that encapsulates 225Ac

    The properties of a metallofullerene that encapsulates 225Ac were studied by radio-chromatographic methods. The results of chromatography on a Buckyclutcher column suggest that there are some metallofullerene iso...

    K. Akiyama, H. Haba, K. Tsukada, M. Asai… in Journal of Radioanalytical and Nuclear Che… (2009)

  2. No Access

    Article

    Determination of Toxic Trace Elements in Foodstuffs, Soils and Sediments of Bangladesh Using Instrumental Neutron Activation Analysis Technique

    The concentrations of arsenic (As), chromium (Cr) and iron (Fe) were determined in the foodstuffs, soils and sediments from various areas in Bangladesh and new data for these toxic trace elements were given. T...

    Shaikh Abdul Latif, D. Afroj, S. M. Hossain… in Bulletin of Environmental Contamination an… (2009)

  3. No Access

    Chapter and Conference Paper

    Variable temperature Mössbauer spectroscopic studies of oxo-centered trinuclear mixed-valence iron succinate, mesaconate and isophthalate complexes

    Three new oxo-centered trinuclear mixed-valence iron complexes, iron succinate, iron mesaconate and iron isophthalate have been prepared. Temperature dependent valence delocalization processes were observed fo...

    D. Afroj, M. Katada in ICAME 2005 (2007)

  4. No Access

    Article

    Synthesis and characterization of new borate-vanadate mixed glasses

    It has been found that a series of MxOy-V2O5-B2O3glasses (MxOy=Li2O, Na2O, K2O and MgO) containing 10 mol%<span style='font-size:12.0pt;font-family: Symbol;mso-bidi-font-family:Symbol'>a-Fe2O3exhibited glass-form...

    T. Tachibana, M. Katada in Journal of Radioanalytical and Nuclear Chemistry (2006)

  5. No Access

    Article

    Mössbauer study on the CMR double perovskite AFe0.5Mo0.5O3 with A=(Ba,Sr) or (Sr,Ca): Chemical pressure effect

    The double perovskites, AFe0.5Mo0.5O3with A=(Ba,Sr) or (Sr,Ca), were prepared by a sol-gel method, and the substitution effect at site A was studied by Mössbauer spectrometry. In the Mössbauer spectra of the doub...

    K. Nomura, A. Rykov, T. Yokoyama… in Journal of Radioanalytical and Nuclear Che… (2005)

  6. No Access

    Article

    Variable temperature Mössbauer spectroscopic studies of oxo-centered trinuclear mixed-valence iron succinate, mesaconate and isophthalate complexes

    Three new oxo-centered trinuclear mixed-valence iron complexes, iron succinate, iron mesaconate and iron isophthalate have been prepared. Temperature dependent valence delocalization processes were observed fo...

    D. Afroj, M. Katada in Hyperfine Interactions (2005)

  7. No Access

    Article

    Synthesis and Mössbauer spectroscopy of oxo-centered mixed-valence trinuclear iron fumarate and iron malonate complexes

    Oxo-centered trinuclear mixed-valence iron fumarate [Fe3O(O2CCH=CHCO2)3(H2O)3]·nH2O and iron malonate [Fe3O(O2CCH2CO2)3(H2O)3] have been prepared and studied by variable temperature Mössbauer spectroscopy. Iron f...

    D. Afroj, T. Yamauchi, M. Katada in Journal of Radioanalytical and Nuclear Chemistry (2003)

  8. No Access

    Article

    Mössbauer spectroscopic studies of perovskite-type oxides Ln1-xAxBO3 synthesized by sol-gel method

    Synthesis of perovskite-type oxides Ln1-xAxBO3 (Ln: lanthanoid; A: alkaline earth; B: transition metal) by heating at low temperature with large ratio of alkaline earth element, especially barium, easily involves...

    T. Yamauchi, M. Katada in Journal of Radioanalytical and Nuclear Chemistry (2003)

  9. No Access

    Article

    Metal-metal interaction in binuclear ferrocene-arene complexes

    Electronic interaction between two iron atoms was studied in the ferrocene-arene binuclear complexes ([Fc(CH2)nPhFeCp]+PF6 -) by using 57Fe Mössbauer spectroscopy and cyclic voltammetry(CV). By comparing the CV d...

    S. Nakashima, H. Isobe, N. Akiyama, T. Okuda… in Journal of Radioanalytical and Nuclear Che… (2003)

  10. No Access

    Article

    Production and characterization of actinide metallofullerenes

    We have, previously, reported on the HPLC elution behavior of the Th, Pa, U, Np, and Am metallofullerenes and the UV/vis/NIR absorption spectra of the Th@C84 and U@C82 species. In this paper, the followings are r...

    K. Akiyama, K. Sueki, H. Haba, K. Tsukada… in Journal of Radioanalytical and Nuclear Che… (2003)

  11. No Access

    Article

    Systematic study of lanthanoid endohedral metallofullerenes: Production yields, HPLC retention time and reactor irradiation effects

    We made systematic studies of lanthanoid metallofullerenes on the following three properties using the radiochemical method: (1) the relative production yields of metallofullerene species, (2) variation of the...

    K. Sueki, K. Akiyama, Y. L. Zhao, I. Ito… in Journal of Radioanalytical and Nuclear Che… (2003)

  12. No Access

    Article

    Mössbauer spectroscopic study of oxo-centered mixed-valence trinuclear iron fumarate

    Oxo-centered mixed-valence trinuclear iron dicarboxylic acid complex iron fumarate [Fe3O(O2CCH=CHCO2)3(H2O)3]·nH2O (n = 18-19), have been synthesized firstly. Variable temperature Mössbauer spectroscopy has been ...

    D. Afroj, M. Katada in Journal of Radioanalytical and Nuclear Chemistry (2002)

  13. No Access

    Chapter and Conference Paper

    Synthesis and 57Fe and 151Eu Mössbauer Spectroscopic Studies of New Lanthanoid-iron Complexes

    New lanthanoid-iron 2,2′-bipyridine (bpy) and 2,2′:6′,2″-terpyridine (terpy) complexes have been investigated by a variable temperature Mössbauer spectroscopy and a single crystal structure analysis. The cryst...

    M. Katada, T. Nawa, H. Kumagai, S. Kawata, S. Kitagawa in Hyperfine Interactions (C) (2002)

  14. No Access

    Chapter and Conference Paper

    The role of silicon atoms inside the Brownmillerite phase of cement clinker

    Seven samples of the ferrite phase of cement clinker (Brownmillerite) were prepared at 1350 °C. The first sample is a pure Brownmillerite, while the other six samples are doped with 3, 6, 9, 12, 15 and 30 mol%...

    M. Y. Hassaan, M. M. El-Desoky, M. Katada, T. Nishida in Hyperfine Interactions (C) (2002)

  15. No Access

    Article

    Mössbauer Spectroscopy of Iron Oxides and Related Compounds

    The superparamagnetic iron oxide particles with a diameter of about 10 and 16 nm were obtained by the reaction of Fe2+ and Fe3+ ions in a water pool of reversed microemulsions. The obtained particles were ascribe...

    M. Katada, T. Ogimoto in Journal of Radioanalytical and Nuclear Chemistry (2000)

  16. No Access

    Article

    Synthesis and151Eu- and57Fe-Mössbauer spectroscopic studies of new europium-iron complexes

    New lanthanoid-iron complexes having phenanthlorine as the chelating ligand were synthesized and characterized by151Eu- and57Fe-Mössbauer spectroscopy. The temperature dependence of the area intensity of Mössbaue...

    M. Katada, T. Nawa, H. Kumagai, S. Kawata… in Journal of Radioanalytical and Nuclear Che… (1999)

  17. No Access

    Article

    Substitution of Fe(III) for Ga(III) in calcium gallate glass confirmed from the Debye temperature

    A Debye temperature θD of 378 (±5K) has been obtained by applying a simplified Debye model to the57Fe Mössbauer spectra of 60CaO·39Ga2O3·57Fe2O3 glass. The θD value is comparable to those (280–580 K) obtained so ...

    T. Nishida, S. Kubuki, M. Katada in Journal of Radioanalytical and Nuclear Chemistry (1998)

  18. No Access

    Article

    Mössbauer spectroscopic studies of thermal decomposition of substituted pentacyanoferrate(II) complexes

    The thermal behaviour of substituted pentacyanoferrates(II) of the type Na3[Fe(CN5)L]·xH2O, whereL=n-, sec-, tert- oriso-butylamine,di-iso-butylamine ortri-n-butylamine, was investigated with the aid of Mössbauer...

    R. B. Lanjewar, S. Kawata, S. Kitagawa, M. Katada in Journal of thermal analysis (1997)

  19. No Access

    Chapter

    Construction and Commissioning Tests of a 10 kW Class Helium Refrigerator for the Large Helical Device

    The Large Helical Device is a heliotron fusion experimental device in which magnetic fields are controlled exclusively by superconducting coils: a pair of helical coils and three pairs of poloidal coils1. The hel...

    S. Satoh, T. Mito, S. Yamada, J. Yamamoto, O. Motojima… in Advances in Cryogenic Engineering (1996)

  20. No Access

    Article

    Crystal structures and Mössbauer spectroscopic studies of oxo-centered trinuclear chloroacetate complexes

    The crystal structures of oxo-centered trineclear cobalt-iron chloroacetate complex [CoIIFe 2 III O(CH2ClCO2)6(H2O)3]·3H2O (1) was compared with that of previou...

    T. Sato, F. Ambe, K. Endo, M. Katada… in Journal of Radioanalytical and Nuclear Che… (1995)

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