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Nakamoto, Tadahiro*; Nakamura, Akio; Takeda, Masuo*
Mssbauer Spectroscopy; Applications in Chemistry, Biology, and Nanotechnology, p.95 - 114, 2013/10
Nakamura, Akio; Nakada, Masami; Nakamoto, Tadahiro*; Kitazawa, Takafumi*; Takeda, Masuo*
Journal of Alloys and Compounds, 444-445, p.621 - 633, 2007/10
Times Cited Count:3 Percentile:28.09(Chemistry, Physical)no abstracts in English
Nakamura, Akio; Nakada, Masami; Nakamoto, Tadahiro*; Kitazawa, Takafumi*; Takeda, Masuo*
Journal of Magnetism and Magnetic Materials, 310(2, Part2), p.1447 - 1449, 2007/03
Magnetic property of a nitrogen (N)-coordinated neptunyl (+2) (Np(VI)) complex. 1 NpO(acac)(py) (acac=CHO, py=CHN) was studied by DC magnetization (M) measurements. While previous Np Mssbauer data of 1 exhibited para magnetic-relaxation spectra similar to other oxo-neptunyls (+1,+2), the DC- data have revealed many strikingly different features of 1 from the latter: first, its reciprocal susceptibility () vs. (K) plots showed a peculiar strongly field ()-dependent nonparamagnetic behavior, which suggests the presence of small ferromagnetic component with 300 K. In addition, its low-temperature isothermal exhibited anomalous relaxation behavior involving initial over-responsive change and subs equent drift back to its "equilibrium" value (). Moreover, such showed strong perturbation effect from the SQUID- measurement itself. Such novel magnetic features suggest the presence of a largely metastable fluctuating magnetic (spin plus orbital) state in 1 as a collective body of individual Ising-type neptunyl (O=Np=O) molecular magnets.
Nakamura, Akio; Nakada, Masami; Nakamoto, Tadahiro*; Kitazawa, Takafumi*; Takeda, Masuo*
Journal of the Physical Society of Japan, 75(Suppl.), p.146 - 148, 2006/08
no abstracts in English
Nakamoto, Tadahiro*; Nakada, Masami; Nakamura, Akio
Journal of Nuclear Science and Technology, 39(Suppl.3), p.102 - 105, 2002/11
no abstracts in English
Nakamoto, Tadahiro; Nakada, Masami; Nakamura, Akio
Solid State Communications, 119(8-9), p.523 - 526, 2001/08
Times Cited Count:10 Percentile:50.75(Physics, Condensed Matter)no abstracts in English
Nakamoto, Tadahiro; Nakada, Masami; Nakamura, Akio
Recent Research Developments in Inorganic Chemistry, 2, p.145 - 163, 2000/00
no abstracts in English
Saeki, Masakatsu; Nakada, Masami; Nakamoto, Tadahiro*; Yamashita, Toshiyuki; ; Krot, N. N.*
Journal of Radioanalytical and Nuclear Chemistry, 239(2), p.221 - 225, 1999/00
Times Cited Count:7 Percentile:49.7(Chemistry, Analytical)no abstracts in English
Saeki, Masakatsu; Nakada, Masami; Nakamoto, Tadahiro*; ; Yamashita, Toshiyuki
Journal of Alloys and Compounds, 271-273, p.176 - 179, 1998/00
Times Cited Count:4 Percentile:39.22(Chemistry, Physical)no abstracts in English
Nakamoto, Tadahiro*; Nakada, Masami; ; Saeki, Masakatsu; Yamashita, Toshiyuki
Journal of Radioanalytical and Nuclear Chemistry, 227(1-2), p.137 - 141, 1998/00
Times Cited Count:2 Percentile:38.16(Chemistry, Analytical)no abstracts in English
Saeki, Masakatsu; Nakada, Masami; Yamashita, Toshiyuki; Nakamoto, Tadahiro*; Krot, N. N.*
Radiochimica Acta, 80(2), p.89 - 94, 1998/00
no abstracts in English