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Mannan, M. A.*; Baba, Yuji; Kida, Tetsuya*; Nagano, Masamitsu*; Noguchi, Hideyuki*
Materials Sciences and Applications, 6(5), p.353 - 359, 2015/05
The synthesis and structure of hexagonal boron carbonitride (h-BCN) film on polycrystalline diamond surface were reported. Polycrystalline diamond and/or diamond-like carbon were first fabricated on Si (100) and then it was used as substrate. The deposition was performed by radio frequency plasma enhanced chemical vapor deposition. In order to reduce the content of nitrogen void defects, the deposition was performed at the high temperature of 950
C under the working pressure of 2.6 Pa. The typical sample with atomic composition of B
C
N
O
in the h-BCN lattice was characterized by X-ray photoelectron spectroscopy. The fine structure of the film was studied by near-edge X-ray absorption fine structure (NEXAFS) measurements. The B K-edge and N K-edge of NEXAFS spectra revealed that the synthesized h-BCN film has the ideal honeycomb-like BN
configuration without nitrogen void defects.
Mannan, M. A.*; Baba, Yuji; Hirao, Norie; Kida, Tetsuya*; Nagano, Masamitsu*; Noguchi, Hideyuki*
Materials Sciences and Applications, 4(5A), p.11 - 19, 2013/05
Hexagonal nano-crystalline boron carbonitride (h-BCN) films grown on Si (100) substrate have been investigated. The films were synthesized by radio frequency plasma enhanced chemical vapor deposition using tris-dimethylamino borane as a precursor. Formation of the nano-crystalline h-BCN compound has been confirmed by X-ray diffraction analysis. The films composed of B, C, and N atoms with different B-N, B-C, C-N chemical bonds in forming the sp2-BCN atomic configuration studied by X-ray photoelectron spectroscopy. Orientation and local structures of the h-BCN hybrid were studied by near-edge X-ray absorption fine structure (NEXAFS) measurements. The dominant presence of 
and 
resonance peaks of the sp2-hybrid orbitals in the B K-edge NEXAFS spectra revealed the formation of the flat sp2-BCN configuration around B atoms which are bound with three nitrogen atoms.
Mannan, M. A.*; Baba, Yuji; Sekiguchi, Tetsuhiro; Shimoyama, Iwao; Hirao, Norie; Nagano, Masamitsu*; Noguchi, Hideyuki*
Journal of Nanomaterials, 2012, p.528256_1 - 528256_9, 2012/00
Times Cited Count：0 Percentile：0(Nanoscience & Nanotechnology)Molecular orientations for thin films of one-dimensional silicon polymers grown by vacuum evaporation have been assigned by X-ray absorption fine structure (XAFS) using linearly polarized synchrotron radiation. For XAFS spectra of polydimethlysilane (PDMS) films on highly oriented pyrolytic graphite (HOPG), the intensities of two peaks were found to be strongly polarization dependent. Quantitative evaluation of the polarization dependence of the XAFS spectra revealed that the polymers are oriented nearly parallel to the surface. The observed orientation is opposite to the previously observed results for PDMS on oxide (indium tin oxide) and metal (polycrystalline copper). The flat-lying feature of PDMS observed only on HOPG surface is attributed to the interaction between CH bonds in PDMS and orbitals in HOPG surface.
Mannan, M. A.*; Baba, Yuji; Sekiguchi, Tetsuhiro; Shimoyama, Iwao; Hirao, Norie; Nagano, Masamitsu*; Noguchi, Hideyuki*
Photon Factory Activity Report 2011, Part B, P. 159, 2012/00
no abstracts in English
Mannan, M. A.; Baba, Yuji; Kida, Tetsuya*; Nagano, Masamitsu*; Shimoyama, Iwao; Hirao, Norie; Noguchi, Hideyuki*
Thin Solid Films, 519(6), p.1780 - 1786, 2011/01
Times Cited Count：19 Percentile：61.3(Materials Science, Multidisciplinary)Orientation of BCN hybrid films synthesized on Ni (111) and Ti substrates by radio frequency plasma enhanced chemical vapor deposition has been investigated. Formation of the 
-BCN hybrids was confirmed by X-ray diffraction. Raman spectra also suggested the presence of graphite-like -BCN hybrid bonds. Orientation and local structures of the films were studied by the near-edge X-ray absorption fine structure (NEXAFS) measurements using synchrotron radiation. The B K-edge NEXAFS spectra revealed the preferred formation of the -BCN hybrid configuration around the B atoms like-BN on Ni (111). It was revealed that the BCN film is parallel to the surface on Ni(111). On the other hand, the film is randomly oriented on Ti surface. It was suggested that the chemical reactivity of the metal surface affects the orientation of the BCN hybrid film.
Mannan, M. A.*; Baba, Yuji; Sekiguchi, Tetsuhiro; Shimoyama, Iwao; Hirao, Norie; Narita, Ayumi; Nagano, Masamitsu*; Noguchi, Hideyuki*
Journal of Electron Spectroscopy and Related Phenomena, 181(2-3), p.242 - 248, 2010/08
Times Cited Count：5 Percentile：31.14(Spectroscopy)The ordering and molecular orientation of polydimethylsilane (PDMS) films grown on indium tin oxide (ITO) surface has been assigned. The orientation of the samples as well as that of the annealed sample was studied by Si K-edge near-edge X-ray absorption fine structure (NEXAFS) and X-ray photoelectron spectroscopy using linearly polarized synchrotron radiation. The Si K-edge NEXAFS spectra for the thick film have at least four resonance peaks of which two peaks are found to be strongly polarization dependent. On the basis of the polarization dependences of the peak intensities, it is revealed that the backbones of the PDMS films are perpendicularly oriented on the ITO surface. The angle between surface and the Si-Si bonds for multilayered film calculated from the helical structure of PDMS molecule was found to be 41.5 which was almost coincided with the experimentally obtained angle of 40 . It was concluded that PDMS molecules are highly self-ordered on ITO surface.
Mannan, M. A.; Noguchi, Hideyuki*; Kida, Tetsuya*; Nagano, Masamitsu*; Hirao, Norie; Baba, Yuji
Thin Solid Films, 518(15), p.4163 - 4169, 2010/05
Times Cited Count：30 Percentile：73.92(Materials Science, Multidisciplinary)Hexagonal boron carbonitride (h-BCN) hybrid films have been synthesized on highly oriented pyrolytic graphite by radiofrequency plasma enhanced chemical vapor deposition using tris-(dimethylamino)borane as a single-source molecular precursor. The films were characterized by X-ray photoelectron spectroscopy (XPS), near-edge X-ray absorption fine structure (NEXAFS) and Raman spectroscopic measurements. XPS measurement showed that the B atoms were bonded to C and N atoms to form the BCN hybrid chemical environment. The atomic composition estimated from the XPS of the typical sample was found to be almost B1C1N1. NEXAFS spectra of the B K-edge and the N K-edge had the peaks due to the and resonances of hybrid orbitals implying the existence of the 
hybrid configurations of h-BCN around the B atoms.
Hayashi, Kimio; Nakagawa, Tetsuya; Onose, Shoji; Ishida, Takuya; Nakamichi, Masaru; Takatsu, Hideyuki; Nakamura, Mutsumi*; Noguchi, Tsuneyuki*
Journal of Nuclear Materials, 386-388, p.1083 - 1086, 2009/04
Times Cited Count：0 Percentile：0.01(Materials Science, Multidisciplinary)no abstracts in English
Mannan, M. A.*; Kida, Tetsuya*; Noguchi, Hideyuki*; Nagano, Masamitsu*; Shimoyama, Iwao; Hirao, Norie; Baba, Yuji
Journal of the Ceramic Society of Japan, 117(1364), p.503 - 507, 2009/04
Times Cited Count：11 Percentile：53.79(Materials Science, Ceramics)Oriented hexagonal BCN films were synthesized on Si(100) substrate by radiofrequency plasma enhanced chemical vapor deposition using tris-(dimethylamino)borane as a precursor. The formation of the crystalline hexagonal BCN hybrids was confirmed by FT-IR and XRD. CH
+ H
carrier gas increased the C content in the films in comparison with N carrier gas. XPS measurement showed that the films were composed of a variety of B-N, B-C, C-N bonds to form the BCN atomic hybrids. The resonance peak in the B K-edge NEXAFS spectra also indicated the presence of the 
hybrid configuration of B-C-N bonds like BN in h-BN. The resonance peaks suggested the diversity in the bonds in the films. Orientation of the h-BCN hybrids was suggested on the basis of the polarization dependence of NEXAFS.
Hayashi, Kimio; Nakagawa, Tetsuya; Onose, Shoji; Ishida, Takuya; Nakamichi, Masaru; Katsuyama, Kozo; Iwamatsu, Shigemi; Hasegawa, Teiji; Kodaka, Hideo; Takatsu, Hideyuki; et al.
JAEA-Technology 2009-007, 168 Pages, 2009/03
JAEA-Technology-2009-007.pdf:31.88MB
In-pile functional tests of breeding blankets have been planned by Japan Atomic Energy Agency (JAEA), using a test blanket module (TBM) which will be loaded in the International Thermonuclear Experimental Reactor (ITER). In preparation for the in-pile functional tests, JAEA has been being performed irradiation experiments of lithium titanate (LiTiO), which is the first candidate of solid breeder materials for the blanket of the demonstration reactor (DEMO) under designing in Japan. The present report describes (1) results of a detailed design and trial fabrication tests of a dismantling apparatus for irradiation capsules which were used in irradiation experiments by the Japan Materials Testing Reactor (JMTR) of JAEA, and (2) results of a preliminary investigation of a glove box facility for post-irradiation examinations (PIEs). In the detailed design of the dismantling apparatus, datailed specifications and the installation methods were examined, based on results of a conceptual design and basic design. In the trial fabrication, cutting tests were curried out by making a mockup of a cutting component. Furthermore, a preliminary investigation of a glove box facility was carried out in order to secure a facility for PIE work after the capsule dismantling, which revealed a technical feasibility.
Mannan, M. A.; Noguchi, Hideyuki*; Kida, Tetsuya*; Nagano, Masamitsu*; Hirao, Norie; Baba, Yuji
Materials Science in Semiconductor Processing, 11(3), p.100 - 105, 2008/06
Times Cited Count：24 Percentile：72.81(Engineering, Electrical & Electronic)In order to synthesize oriented hexagonal boron carbonitride (h-BCN) films, borane-triethylamine complex was used as a single-source precursor. The films were deposited on Si(100) substrate by microwave plasma-enhanced chemical-vapor deposition using CH+H as the carrier gas. Fourier transform infrared spectroscopy (FT-IR) confirmed the formation of hexagonal BCN phase in a short-range order. The chemical composition and the local structures of films were studied by X-ray photoelectron spectroscopy (XPS) and the near-edge X-ray absorption fine structure (NEXAFS) spectroscopic measurements. The NEXAFS measurement suggested that the B atoms are bonded not only to the N atoms but also to the C atoms to form various local structures of sp B-C-N hybrid configurations. The polarization dependence of NEXAFS suggested that the local structures of the sp BCN layers have different atomic orientations to the substrate.
Hayashi, Kimio; Nakagawa, Tetsuya; Onose, Shoji; Ishida, Takuya; Kodaka, Hideo; Katsuyama, Kozo; Kitajima, Toshio; Takahashi, Kozo; Tsuchiya, Kunihiko; Nakamichi, Masaru; et al.
JAEA-Technology 2008-010, 68 Pages, 2008/03
JAEA-Technology-2008-010.pdf:11.31MB
In-pile functional tests of breeding blankets for fusion reactors have been planned by Japan Atomic Energy Agency (JAEA), using a test blanket module (TBM) which will be loaded in ITER. The present report describes a conceptual investigation and a basic design of the dismantling process for irradiation capsules which were used in irradiation experiments by the Japan Materials Testing Reactor (JMTR) of JAEA. In the present design, the irradiation capsule is cut by a band saw; the released tritium is recovered safely by a purge-gas system, and is consolidated into a radioactive waste form. Furthermore, adoption of the inner-box enclosing the dismantling apparatus has brought a prospect to be able to utilize an existing hot cell (beta-
cell) equipped with usual wall material permeable to tritium, without extensive refurbishing of the cell. Thus, the present study has indicated the feasibility of the present dismantling process for the irradiated JMTR capsules containing tritium.
Seki, Yasushi; Takatsu, Hideyuki; Iida, Hiromasa; *; Ogawa, Masuro; Noguchi, Hiroshi; Murata, Mikio; *; *; *; et al.
JAERI-M 91-126, 511 Pages, 1991/08
no abstracts in English
Mannan, M. A.; Baba, Yuji; Sekiguchi, Tetsuhiro; Shimoyama, Iwao; Hirao, Norie; Narita, Ayumi; Nagano, Masamitsu*; Noguchi, Hideyuki*
no journal, ,
The electronic structure and molecular orientation of polydimethylsilane (PDMS) film evaporated on indium tin oxide (ITO) surface have been assigned. The film has been synthesized by high vacuum electron bombardment evaporation technique. The orientation and electronic structure of the film as well as those of the annealed sample were studied by Si K-edge NEXAFS and X-ray photoelectron spectroscopy. The Si K-edge NEXAFS spectra for the thick film have at least four resonance peaks of which two peaks are found to be strongly polarization dependent. The lower-energy resonance peak at 1842.0 eV has short-axis polarization corresponding to the resonance excitation from Si 1s to s* (pyz), and the higher-energy resonance peak at 1843.2 eV has long-axis polarization due to the excitation of Si 1s to s* (px). On the basis of the polarization dependences, it is revealed that the backbones of the PDMS polymers are perpendicularly oriented to the ITO surface.
Mannan, M. A.; Baba, Yuji; Sekiguchi, Tetsuhiro; Shimoyama, Iwao; Hirao, Norie; Narita, Ayumi; Nagano, Masamitsu*; Noguchi, Hideyuki*
no journal, ,
no abstracts in English
Mannan, M. A.; Baba, Yuji; Sekiguchi, Tetsuhiro; Shimoyama, Iwao; Hirao, Norie; Narita, Ayumi; Nagano, Masamitsu*; Noguchi, Hideyuki*
no journal, ,
no abstracts in English
Mannan, M. A.*; Baba, Yuji; Sekiguchi, Tetsuhiro; Shimoyama, Iwao; Hirao, Norie; Narita, Ayumi; Nagano, Masamitsu*; Noguchi, Hideyuki*
no journal, ,
The electric and optical properties in thin films of one-dimensional polymers strongly depend on the molecular orientation, so the molecular orientations of polydimethylsilane (PDMS) on various metal and semiconductor surfaces have been investigated. The substrates investigated were copper, highly oriented pyrolytic graphite (HOPG), and indium tin oxide (ITO). The orientations were studied by Si K-edge near-edge X-ray absorption fine structure (NEXAFS). Polarization dependences of the NEXAFS spectra showed that the PDMS molecules are self-ordered and the backbones of the polymers are perpendicularly oriented on copper and ITO surfaces. While, it was found that the molecular orientation of PDMSs on HOPG surface is reverse to those on copper and ITO surfaces, i.e., nearly parallel to the HOPG surface. It was concluded that the flatness of the surface determines the orientation of the first layer, and the orientation of the succeeding layers follow the first layer.
Mannan, M. A.*; Baba, Yuji; Sekiguchi, Tetsuhiro; Shimoyama, Iwao; Hirao, Norie; Narita, Ayumi; Noguchi, Hideyuki*; Nagano, Masamitsu*
no journal, ,
no abstracts in English
Mannan, M. A.; Baba, Yuji; Sekiguchi, Tetsuhiro; Shimoyama, Iwao; Hirao, Norie; Narita, Ayumi; Nagano, Masamitsu*; Noguchi, Hideyuki*
no journal, ,
no abstracts in English
Mannan, M. A.; Baba, Yuji; Sekiguchi, Tetsuhiro; Shimoyama, Iwao; Hirao, Norie; Narita, Ayumi; Nagano, Masamitsu*; Noguchi, Hideyuki*
no journal, ,
no abstracts in English
