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Welcome to Fukami's Laboratory of University of the Ryukyus

UPDATE ---- 6 December 2018

Professor Takanori Fukami
Doctor of Science (Fukuoka University, 1989)

Member of the Board of Examiners (Ph. D.) for Bharathiar University of India (2001)

Research field
Structural Phase Transition of Ferroelectric and Superionic Crystals

Department of Physics and Earth Sciences
Faculty of Science
University of the Ryukyus
Okinawa 903-0213
Japan

E-mail: fukami@sci.u-ryukyu.ac.jp
TEL: +81-(0)98-895-8891
FAX: +81-(0)98-895-8509

List of Published Papers

  1. Estimation of Deuterium Concentration in KDP by ESR
    Jpn. J. Appl. Phys. 23 (1984) 943.
    S. Akahoshi, T. Fukami, Y. Matsumoto, K. Hukuda

  2. Symmetry Change of 77Se Hyperfine Components of ESR Spectrum of SeO43- Radicals in Deuterated NH4H2PO4
    Proc. 6th Int. Meet. Ferroelectricity, Kobe, 1985, Jpn. J. Appl. Phys. 24 (1985) Suppl. 24-2, p.929-931.
    T. Fukami, S. Akahoshi, K. Hukuda

  3. Deuterium Concentrations of H2PO4- and NH4+ Radicals in Partially deuterated NH4H2PO4
    J. Phys. Soc. Jpn. 55 (1986) 3633-3635.
    T. Fukami, S. Akahoshi, K. Hukuda

  4. Refinement of the Crystal Structure of NH4H2PO4 above and below Antiferroelectric Phase Transition Temperature
    J. Phys. Soc. Jpn. 56 (1987) 2223-2224.
    T. Fukami, S. Akahoshi, K. Hukuda, T. Yagi

  5. X-Ray Study of Thermal Parameters of NH4H2PO4 and ND4D2PO4 in the Paraelectric Phase
    J. Phys. Soc. Jpn. 56 (1987) 4388-4392.
    T. Fukami, S. Akahoshi, K. Hukuda, T. Yagi

  6. Behavior of 77Se Hyperfine Components of SeO43- Radicals in Highly Deuterated NH4H2PO4
    J. Phys. Soc. Jpn. 57 (1988) 275-277.
    T. Fukami, S. Akahoshi, K. Hukuda

  7. X-Ray Study of Crystal Structure of ND4D2PO4 in the Antiferroelectric Phase
    J. Phys. Soc. Jpn. 57 (1988) 1287-1290.
    T. Fukami

  8. Distance between Two-Site Distribution of N and P Atoms of ADP and DADP in the Paraelectrics Phase
    J. Phys. Soc. Jpn. 57 (1988) 2211-2212.
    T. Fukami

  9. 量子井戸中における励起子の結合エネルギー −Hermanson 誘電関数の効果−
    物性研究, 51 (1989) 349-353.
    安仁屋勝、深水孝則、友寄友造、与那城勝邦

  10. Refinement of the Crystal Structure of NH4H2AsO4 above and below Antiferroelectric Phase-Transition Temperature
    J. Phys. Soc. Jpn. 58 (1989) 3429-3430.
    T. Fukami

  11. Refinement of the Crystal Structure of KH2PO4 in the Ferroelectric Phase
    Phys. Stat. Sol. (a) 117 (1990) K93-K96.
    T. Fukami

  12. X-Ray Study of Crystal Structure of NH4H2AsO4 in the Paraelectric and Antiferroelectric Phases
    Phys. Stat. Sol. (a) 121 (1990) 383-390.
    T. Fukami

  13. Anomalous AC Electric Conductivity in (NH4)3H(SeO4)2
    J. Phys. Soc. Jpn. 59 (1990) 4560-4561.
    K. Furukawa, S. Akahoshi, T. Fukami, K. Hukuda

  14. Refinement of the Crystal Structure of RbH2PO4 in the Ferroelectric Phase
    Phys. Stat. Sol. (a) 122 (1990) K117-K120.
    T. Fukami

  15. Dipole Moment of PO43- and NH4+ Ions of NH4H2PO4 in the Paraelectric Phase
    J. Phys. Soc. Jpn. 62 (1993) 2186-2187.
    T. Fukami

  16. Phase Transition of the Aqueous Solution of Rochelle Salt
    Nuovo Cimento D15 (1993) 771-774.
    T. Fukami

  17. A New Phase Transition of (NH4)3H(SO4)2 at 190 C
    J. Phys. Soc. Jpn. 63 (1994) 2006-2007.
    T. Fukami, K. Tobaru, K. Kaneda, K. Nakasone, K.Furukawa

  18. Crystal Structure of (NH4)3H(SeO4)2 in Phase IV
    J. Phys. Soc. Jpn. 63 (1994) 2829-2830.
    T. Fukami, K. Tobaru, K. Kaneda, K. Nakasone, K. Furukawa

  19. Phase Transition of (NH4)3H(SeO4)2 Grown from Non-Stoichiometric Solution
    Phys. Stat. Sol. (a) 151 (1995) 33-38.
    T. Fukami, K. Tobaru, K. Nakasone, K.Furukawa

  20. Low Frequency Dispersion and Quasi Two-dimensional Proton Conductivity in (NH4)3H(SeO4)2
    Rep. Fac. Sci. Kagoshima Univ. 28 (1995) 21-25.
    K. Furukawa, T. Fukami

  21. Crystal Structure of (NH4)3H(SeO4)2 in Phase V
    Phys. Stat. Sol. (a) 153 (1996) 319-322.
    T. Fukami, K. Nakasone, K. Furukawa

  22. Crystal Structure of (NH4)3H(SO4)2 in Phase I
    Jpn. J. Appl. Phys. 34 (1996) 2253-2254.
    T. Fukami, K. Horiuchi, K. Nakasone, K. Furukawa

  23. X-Ray Diffraction and 35Cl NQR Studies of Bis-2-Picolinium Hexachlorostannate
    Bull. Chem. Soc. Jpn. 69 (1996) 1527-1532.
    K. Horiuchi, T. Fukami

  24. Bismuth(III) Complexes of 2-Mercaptoethanol: Preparation, Structural and Spectroscopic Characterization, Antibactericidal Activity toward Helicobacter pylori, and Inhibitory Effect toward H.pylory-Produced Urease
    Bull. Chem. Soc. Jpn. 70 (1997) 639-648.
    E. Asato, K. Kamamuta, Y. Akamine, T. Fukami, R. Nukada, M. Mikuriya, S.Deguchi, Y.Yokota

  25. Crystal Structure and A New Phase Transition of (ND4)3D(SO4)2 in High Temperature Phase
    Solid State Ionics 98 (1997) 105-111.
    T. Fukami, H. Ninomiya, R. H. Chen

  26. Crystal Structures in Phases I and II of (ND4)3D(SeO4)2 and Its Phase Transitions
    J. Phys. Chem. Solids 58 (1997) 2113-2118.
    T. Fukami, R. H. Chen

  27. Crystal Structure and Electrical Conductivity of LiN2H5SO4 at High Temperature
    Jpn. J. Appl. Phys. 37 (1998) 925-929.
    T. Fukami, R. H. Chen

  28. Structural Phase Transition and Crystal Structure of Na3H(SO4)2 in the Low Temperature Phase
    Ferroelectrics 211 (1998) 67-77.
    T. Fukami, R. H. Chen

  29. Studies of Ionic Conductivity and Structural Phase Transitions of Na3H(SO4)2 Crystal
    Solid State Ionics 110 (1998) 277-281.
    R. H. Chen, R. J. Wang, T. Fukami, C. S. Shern

  30. Crystal Structure of K3Na(SeO4)2 at 340 K
    Acta Phys. Pol. A 94 (1998) 795-801.
    T. Fukami, R. H. Chen

  31. Refinement of Crystal Structure at Room Temperature and Structral Phase Transition for (NH4)4H2(SeO4)3 and (ND4)4D2(SeO4)3 Crystal
    Phys. Stat. Sol. (b) 214 (1999) 219-227.
    T. Fukami, R. H. Chen

  32. Studies of Low-Temperature Structural Phase Transition for (NH4)4H2(SeO4)3 Crystal by DSC and EPR
    Solid State Commun. 112 (1999) 213-217.
    T. Fukami, R. H. Chen

  33. Structrual Phase Transition and Crystal Structure for Na3D(SO4)2 Crystal at Room Temperature
    Phys. Stat. Sol. (b) 216 (1999) 917-923.
    T.Fukami, R. H. Chen

  34. Structural Study of (NH4)4H2(SeO4)3 in the Low-Temperature Phase
    Acta Phys. Pol. A 97 (2000) 663-670.
    T. Fukami, N. Higa, R. H. Chen

  35. Structural Study of a High-Temperature Phase in (ND4)3D(SO4)2
    Solid State Ionics 131 (2000) 275-280.
    T. Fukami, K. Horiuchi, R. H. Chen

  36. Structural Phase Transition and Crystal Structure for (ND4)4D2(SeO4)3 at Low Temperature
    Acta Phys. Pol. A 100 (2001) 53-65.
    T. Fukami, R. H. Chen

  37. Frequency Dependence of AC Ionic Conductivity and Dielectric Relation Studies in Na3H(SO4)2 Single Crystal
    J. Phys. Chem. Solids 63 (2002) 203-212.
    R. H. Chen, C. S. Shern, T. Fukami

  38. Analyses of Angular Variation of (NH4)3H(SeO4)2:SeO3- ESR Spectra
    Ferroelectrics 281 (2002) 41-51.
    T. Fukami, R. H. Chen

  39. Structural Phase Transition, Ionic Conductivity, and Dielectric Investigations in K3H(SO4)2 Single Crystals, Colour Fig.1 and Fig.2
    J. Phys. Chem. Solids 64 (2003) 553-563.
    R. H. Chen, R. Y. Chang, C. S. Shern, T. Fukami

  40. Structural Phase Transition and Crystal Structure for a Highly Deuterated (ND4)3D(SeO4)2 Crystal
    Phys. Stat. Sol. (a) 199 (2003) 378-388.
    T. Fukami, R. H. Chen

  41. Refinement of Crystal Structure of Na2SeO4 at Room Temperature
    J. Phys. Soc. Jpn. 72 (2003) 3299-3300.
    T. Fukami, R. H. Chen

  42. Studies on a New Rb3H9(PO4)4 Crystal
    Cryst. Res. Technol. 39(2) (2004) 131-136.
    T. Fukami, R. H. Chen

  43. A Structural Phase Transition and Molecular Motions in (C2H5NH3)2[ZnBr4] Studied by 1H NMR and X-ray Diffraction
    Bull. Chem. Soc. Jpn. 77 (2004) 2199-2202.
    K. Horiuchi, C. Iijima, S. Miyagi, H. Yogi, T. Fukami, R. Ikeda

  44. Studies of High-Temperature Phase Transition, Electrical Condictivity and Dielectric Relaxation in (NH4)H2PO4 Single Crystal
    J. Appl. Phys. 98 (2005) 044104 1-7.
    R. H. Chen, C. C. Yen, C. S. Shern, T. Fukami

  45. Structural Phase Transition and Molecular Motions in [(CH3)3CNH3]2[ZnCl4] Studied by 1H NMR, Differential Scanning Calorimetry and X-Ray Diffraction
    Phys. Rev. B72 (2005) 174114 1-8.
    K. Horiuchi, S. Uezato, Y. Yogi, A. Abe, T. Fukami, R. Takeishi, R. Ikeda

  46. Structural Study on a New Cs2S2(SO4)3 Crystal
    Cryst. Res. Technol. 41 (2006) 611-614.
    T. Fukami, R. H. Chen

  47. Crystal Structure and Transitions for Monoclinic KH2PO4 Crystal
    J. Phys. Soc. Jpn. 75 (2006) 074602 1-5.
    T. Fukami, R. H. Chen

  48. Impedance Spectroscopy and Dielectric Analysis in KH2PO4 Single Crystal
    Solid State Ionics 177 (2006) 2857-2864.
    R. H. Chen, C. C. Yen, C. S. Shern, T. Fukami

  49. Studies of Structure, Thermal, and Electrical Properties for Cs5H3(SO4)4 Crystal
    Ionics 12 (2006) 257-262.
    T. Fukami, S. Jin, R. H. Chen

  50. Studies on Crystal Structure and Electrical Conductivity for Cu4I4(CH3NHCS)2 and CuI(CH3NHCS)2 Polymer Complexes
    Open Chem. Phys. J. 1 (2008) 29-35.
    T. Fukami, H. Ishida, I. Kiyuna, N. Matayoshi, C. Fukuhara

  51. Conductivity of Dielectric Relaxation Phenomena in (NH4)2SO4 Single Crystal
    Solid State Ionics 180 (2009) 356-361.
    R. H. Chen, Y. C. Chen, C. S. Shern, T. Fukami

  52. Ionic Conductivity and Dielectric Relaxation Studies of LiNaSO4 Single Crystal
    Solid State Ionics 181 (2010) 877-882.
    R. H. Chen, C. M. Tseng, C. S. Shern, T. Fukami

  53. Crystal Structures and Isotope Effect on Na5H3(SeO4)4*2H2O and Na5D3(SeO4)4*2D2O Crystals
    Cryst. Res. Technol. 45 (2010) 856-862.
    T. Fukami, J. Miyazaki, T. Tomimura, R. H. Chen

  54. Geometric Isotope Effect and Phase Transition on (NH4)2Co(SO4)2*6H2O Tutton Salt
    J. Mater. Sci. Engineer. Adv. Technol. 2 (2010) 147-164.
    T. Fukami, T. Tomimura, R. H. Chen

  55. Crystal Structures and Phase Transition of Single Crystalline CsNH2SO3
    Cryst. Res. Technol. 46 (2011) 287-291.
    T. Fukami, T. Kyan, K. Nakano, R. H. Chen

  56. Crystal Growth and Structure of a New PbHNSO3 Crystal
    Int. J. Chem. 5(1) (2013) 1-7.
    T. Fukami, M. Seino, K. Nakasone, S. Tahara

  57. Phase Transition and Crystal Structure of CsHSeO4 and CsDSeO4 Crystals
    Int. J. Chem. 5(3) (2013) 1-11.
    T. Fukami, S. Tahara, K. Nakasone, M. Seino

  58. Thermal Properties and Structures of CsHSO4 and CsDSO4 Crystals
    Int. Res. J. Pure & Appl. Chem. 4(6) (2014) 621-637.
    T. Fukami, S. Tahara, K. Nakasone

  59. Anion Polarization Effects on Static Structure and Ionic Transport in Superionic Melt of RbAg4I5
    J. Phys. Soc. Jpn. 84(2) (2015) 024602 1-9.
    S. Tahara, T. Fukami

  60. Synthesis, Crystal Structure, and Thermal Properties of CaSO4*2H2O Single Crystals
    Int. J. Chem. 7(2) (2015) 12-20.
    T. Fukami, S. Tahara, K. Nakasone, C. Yasuda

  61. Intermediate-Range Chemical Ordering of Cations in Molten RbCl-AgCl
    J. Chem. Phys. 143 (2015) 044509 1-7.
    S. Tahara, Y. Kawakita, H. Shimakura, K. Ohara, T. Fukami, S. Takeda

  62. Two Low-Energy Excitations in Superionic Conductors of RbAg4I5 and KAg4I5
    JPS Conf. Proc. 8 (2015) 031008 1-6.
    S. Tahara, Y. Kawakita, M. Nakamura, H. Shimakura, T. Kikuchi, Y. Inamura, K. Nakajima, S.O. Kawamura, T. Sunakawa, T. Fukami

  63. Crystal Structure and Thermal Properties of SrC4H4O6*4H2O Single Crystals
    Int. Res. J. Pure & Appl. Chem. 11(1) (2016) 23674 1-10.
    T. Fukami, S. Tahara, C. Yasuda, K. Nakasone

  64. Structural Refinements and Thermal Properties of L(+)-Tartaric, D(-)-Tartaric, and Monohydrate Racemic Tartaric Acid
    Int. J. Chem. 8(2) (2016) 9-21.
    T. Fukami, S. Tahara, C. Yasuda, K. Nakasone

  65. Thermal Properties, Crystal Structure, and Phase Transition of Racemic CaC4H4O6*4H2O Single Crystals
    Am. Chem. Sci. J. 16(3) (2016) 28258 1-11.
    T. Fukami, S. Hiyajyo, S. Tahara, C. Yasuda

  66. Thermal Properties and Crystal Structure of BaC4H4O6 Single Crystals
    Int. J. Chem. 9(1) (2017) 30-37.
    T. Fukami, S. Hiyajyo, S. Tahara, C. Yasuda

  67. Crystal Structure and Thermal Properties of Racemic SrC4H4O6*4H2O Single Crystals
    Int. Res. J. Pure & Appl. Chem. 14(2) (2017) 34299 1-10.
    T. Fukami, S. Hiyajyo, S. Tahara, C. Yasuda

  68. Structural Analysis of Molten NaNO3 by Molecular Dynamics Simulation
    EPJ Web Conf. 151 (2017) 01004 1-6.
    S. Tahara, H. Toyama, H. Shimakura, T. Fukami

  69. Structure and Ionic Diffusion in Molten NaI, RbI, and NaI-RbI mixture
    EPJ Web Conf. 151 (2017) 03006 1-7.
    S. Tahara, K. Ohara, H. Shimakura, T. Fukami

  70. Ionic Conductivities of Molten CuI and AgI-CuI Mixtures
    EPJ Web Conf. 151 (2017) 04005 1-5.
    S. Tahara, H. Shimakura, S. Ohno, T. Fukami

  71. Structural and Thermal Studies on Racemic BaC4H4O6*H2O
    Chem. Sci. Int. J. 20(3) (2017) 36656 1-10.
    T. Fukami, S. Hiyajyo, S. Tahara

  72. Structural and Thermal Studies on Racemic PbC4H4O6*2H2O Single Crystal
    Chem. Sci. Int. J. 25(1) (2018) 45004 1-9.
    T. Fukami, S. Tahara

  73. Crystal Structures and Thermal Properties of L-MnC4H4O6*2H2O and DL-MnC4H4O6*2H2O
    Int. J. Chem. 12(1) (2020) 78-88.
    T. Fukami, S. Tahara

  74. Structural and Thermal Investigations of L-CuC4H4O6*3H2O and DL-CuC4H4O6*2H2O Single Crystals
    Int. J. Chem. 13(1) (2021) 38-49.
    T. Fukami, S. Tahara

  75. Crystal Growth, Structural and Thermal Studies of FeC4H4O6*2.5H2O
    Int. J. Chem. 14(2) (2022) 8-17.
    T. Fukami, S. Tahara

  76. Crystal Growth and Structure of NiC4H4O6*2.5H2O
    Int. J. Chem. 16(1) (2024) 1-10.
    T. Fukami, S. Tahara
LINK
University of the Ryukyus

This picture is CaSO4*2H2O single crystals grown by a gel method.