Program

Division 3 Poster Session

16th PS Room 16aPS 10:00〜12:00

Division 3
Poster Session
(nanoscale magnetism, spintronics, magnetism of compounds, spin systems, frustrated magnets, experimental techniques)

1
Heat-controlled magnetic anisotropy effect in magnetic tunnel junctions with MgO|Pt|MgO capping
Fac. of Eng., Univ. of FukuiA, Grad. Sch. of Eng. Sci., Univ. of OsakaB, CSRN-OsakaC, AISTD
Minori GotoA,B,C, Yuki HibinoD, Kay YakushijiD, Yoshishige SuzukiD, Hitoshi KubotaD
2
An attempt to perform a magnetic imaging of a van der Waals magnetic material (Fe1-xCox)5Ge3Te using nitrogen-vacancy centers in diamond.
School of Science, The University of Tokyo, The Institute for Solid State Physics, The University of TokyoA
Rei Harada, Yuki Nakamura, Miwako TanakaA, Toshiya IdeueA, Kento Sasaki, Kensuke Kobayashi
3
Development of Electron Spin Resonance-Scanning Tunneling Microscope
Dept. of Phys., Kanazawa Univ., Eng. and Tech. Dept., Kanazawa Univ.A, Japan Advanced Institute of Science and TechnologyB, Faculty of Engineering, Gifu Univ.C
H.Maekawa, Erlina Tik Man, K.ShimamuraA, T.AnB, K.YamadaC, Y.Yoshida
4
Modulation of physical properties in van der Waals materials on a solid ion conductor by gating
Dept. of Phys. Osaka U.A, CSRN Osaka U.B, OTRI Osaka U.C, OISTD
Katsuma KishigiA, Nan JiangA,B,C, Yoshinori OkadaD, Yasuhiro NiimiA,B,C
5
SAR measurements of iron oxide nanoparticles under pulsed magnetic field
Akita Univ., Grad. Sch. of Eng. Sci.
T. Notoya, M. Sato and Y. Yamamoto
6
Effect of inter-particle interactions on the dynamic hysteresis of iron oxide nanoparticles
Akita Univ.,Grad. Sch. of Eng. Sci.
R.Katsumata, E. Kuwano and Y.Yamamoto
7
Control of SAR of magnetic nanoparticles by applying DC magnetic field
Akita Univ., Grad. Sch. of Eng. Sci.
H. Tokairin and Y. Yamamoto
8
NMR study on sugar sensor composite based on nano sized gold particle
Faculty of Science and Technology, Sophia University, Institute for Material Research, Tohoku UniversityA, Shibaura Institute of TechnologyB, RIKEN Nishina CenterC
Takayuki Goto, Kai Sato, Takeshi Hashimoto, Takashi Hayashita, Satoshi IguchiA, Takahiko SasakiA, Dita Puspita SariB, Isao WatanabeC
11
Thermal-driven imaging toward observation of antiferromagnetic domain in altermagnetic RuO2
ICR, Kyoto Univ., CSRN, Kyoto Univ.A, Dept. of Phys., The Univ. of TokyoB
Hiroyuki Takahashi, Shutaro KarubeA, Itaru Sugiura, Yuta KobayashiB, Hiroki Matsumoto, Hideki Narita, Ryusuke HisatomiA, Yoichi ShiotaA, Teruo OnoA
12
Spin flip scattering at chiral domain wall
Tokyo Metro. Univ.
Keita Matsubara, Kazumasa Hattori
13
Structural analysis and evaluation of spin torque efficiency for atomically mixed Si/Pt interfaces
Dept. of Phys. Keio Univ., NIMSA, Spintronics Center Keio Univ.B
R. Sasaki, C. HeA, H. SukegawaA, T. OhkuboA, S. MitaniA, K. Yamanoi, Y. NozakiB
14
Magnetism and transport properties of Cr2Te3/topological insulator/Cr2Te3 trilayers
Univ. of Tokyo
Yuxiang Mao,Shunzhen Wang,Yujun Wang,Masashi Kawaguchi,Masamitsu Hayashi
15
Magneto-optical detection of long-range orbital transport in Pt
Keio Univ., KiPASA, Keio CSRNB
Hiroyuki Moriya, Mari Taniguchi, Kazuya AndoA,B
16
Determination of spin and orbital diffusion length using nonlocal spin-valves
Dept. of Phys. Univ. of Tokyo
Yusuke Tanaka, Yuki Sumitomo, Kazuma Nohara, Masashi Kawaguchi, Masamitsu Hayashi
17
Magneto-optical detection of current-induced spin/orbital accumulation in topological insulators
Univ. of Tokyo,Mie Univ.A,RIKENB
Shunzhen Wang,Ryota Miyazaki,Kohji NakamuraA,Guanxiong QuB,Masashi Kawaguchi and Masamitsu Hayashi
18
Light - Spin conversion in Dirac semimetal
Dept. of Phys. Tokyo Univ., RIKENA
Ryota Miyazaki, Shunzhen Wang, Guanxiong QuA, Masashi Kawaguchi, Masamitsu Hayashi
21
Characterization of magnon transport in the antiferromagnet NiO at the Néel temperature
ICR, Kyoto Univ., CSRN, Kyoto Univ.A, Nagoya Univ.B
I. Sugiura, Y. ShiotaA, R. HisatomiA, S. KarubeA, T. OnoA, and T. MoriyamaB
22
Theory of spin pumping through antiferromagnetic layers
Dept. Phys. &RIIS, Okayama University
Yuto Furutani, Masanori Ichioka, Hiroto Adachi
23
First-Principles Calculations of Spin Hall Conductivity of Transition Metal Dichalcogenides
Grad. Sch. Eng. Sci., Osaka Univ., SANKEN, Osaka Univ.A
Yuto Yashima, Atsuo ShitadeA, and Emi MinamitaniA
24
Ginzburg-Landau theory of the ferrimagnetic spin Seebeck effect
Dept. Phys. & RIIS, Okayama University
Hayato Fukushima, Masanori Ichioka, Hiroto Adachi
25
One-dimensional Ginzburg-Landau simulation of the spin Seebeck effect
Dept. Phys. & RIIS, Okayama University
Hiromi Matsunaga, Masanori Ichioka, Hiroto Adachi
26
Modulation of the inverse Rashba-Edelstein effect by metastable structuring of heavy metals at the interface
Dept. of Phys., Kyushu Univ.
Taishiro Yamazaki, Riku Iimori, Takashi Kimura
27
Observation of nonlinear magnon propagation in synthetic antiferromagnets
Kyoto Univ.A, ICR Kyoto Univ.B
Daiju HayashiA,B, Yoichi ShiotaB, Ryusuke HisatomiB, Hideki NaritaB, Syutaro KarubeB, Teruo OnoB
28
Fabrication of vertical spin valve devices using a van-der-Waals ferromagnet
Dept. of Phys. Osaka U.A, CSRN. Osaka U.B, OTRI. Osaka U.C, OISTD
Yugo TabataA, Ryoya NakamuraA, Nan JiangA,B,C, Yoshinori OkadaD, Yasuhiro NiimiA,B,C
31
Study on correlation between structural parameters and spin-torque efficiency of compositional gradient interface
Dept. of Phys. Keio Univ., Dept. of Appl. Phys. Fukuoka Univ.A, NIMSB, CSRN Keio Univ.C
H. Nakayama, T. HoraguchiA, C. HeB, Z. WenB, H. SukegawaB, T. OhkuboB, S. MitaniB, K. Yamanoi, Y. NozakiC
32
Spin transportation properties of amorphous FeSn
Dept. of Phys., Osaka UniversityA,IMR, Tohoku UniversityB, Dept. of Chem., Rikkyo UniversityC, CSRN, Osaka UniversityD, OTRI, Osaka UniversityE, Dept. of Appl. Phys., The University of TokyoF
Yoshinobu OnoA, Kohei FujiwaraB,C, Mori WatanabeA, Ryoya NakamuraA, Nan JiangA,D,E, Atsushi TsukazakiB,F, Yasuhiro NiimiA,D,E
33
Simulation of magnon propagation in synthetic antiferromagnets
AIMR, Tohoku Univ., Univ. of TokyoA, ICR, Kyoto Univ.B
M. Ishibashi, M. KawaguchiA, Y. ShiotaB and T. OnoB
34
Ultrastrongly-coupled non-reciprocal magnon-polaritons in magnetochiral metamaterials
Tohoku Univ.A, Kyoto Inst. Tech.B, Kyoto Univ.C, RIKEN SPring-8D
S. TomitaA, K. MitaA, T. KodamaA, T. UedaB, T. NakanishiC, K. SawadaD, T. ChibaA
35
Reinforcement learning for efficient magnetization reversal by external field
Saitama Univ.
Y. Igarashi, J. Fujimoto
36
Phase identification of spin waves by machine learning
Toho Univ.
Shuto Kamakura, Jun-ichiro Ohe
37
Rectification effect in superconductor MoGe/ferromagnet NiFe bilayer system
Dept. Appl. Phys., Univ. of TokyoA, RIKEN CEMSB, Inst. AI and Beyond, Univ. of TokyoC, AIMR Tohoku Univ.D
Koyomi OshiganeA, Hiroki ArisawaA,B, Eiji SaitohA,B,C,D
38
An attempt of electric field control of magnetoconductive properties of two-dimensional layered ferromagnet Fe3GaTe2 transferred on ferroelectric PMN-PT substrates
Dept. of Physics, Kyushu Univ.
Yuta Kodani, Tasuku Furutono, Taishiro Yamazaki, Riku Iimori, Shaojie Hu, Kazumasa Yamada, Takashi Kimura
41
Pressure effect on unidirectional magnetoresistance in ferromagnetic/heavy metal bilayer
Dept. of Phys., Kyushu Univ.
Teppei Kimura, Riku Iimori, Taishiro Yamazaki, Kazumasa Yamada, Akihiro Mitsuda, Takashi Kimura
42
Synthesis and properties of S=1/2 kagome lattice antiferromagnetic titanium fluoride systems with doubly ordered cations
Kyoto Univ., IAMRDA, Department of Physics, University of VirginiaB, ISSPC
Yokokura Ryoga, Hayashi Masahiro, Mitioka Chishiro, Seung-hun LeeB,Asiri ThennakoonB, Matsuo AkiraC, Kindo KoichiC, Ueda HiroakiA
43
Effects of substitution on the structural and magnetic properties of NdCo2P2
Dept. Engineering Science, Univ. of Electro-Commun.
Azumi Ishita, Raito Nakamura, Jin Nakamura
44
Itinerant Magnetism Research for the Single Crystals of (Y1-xCax)Fe2Ge2
Kyoto Univ.
Kohei YOSHINAGA, Chishiro MICHIOKA
45
Spin fluctuation in the weak ferromagnetic Fe2V1-xMxAl (M = Cr, Fe) Heusler alloy
NIMS, Kyoto Univ.A, Doshisha Univ.B
Naohito Tsujii, Hiroya Sakurai, Takao Mori, Kohei YoshinagaA, Chishiro MichiokaA, Kazuyoshi YoshimuraA,B
46
Thermodynamic limitations for collective modes in phases with long-range order in itinerant electron systems
ADSE, Hiroshima University
Hiroshi Shimahara
47
Magnetic structural analysis of FeRh single crystal by four-circle neutron diffractometer FONDER
Univ. of Tsukuba, Tohoku Univ.A, ISSP Univ. of TokyoB
Miwako Takahashi, Nikola Subotic, Yukio NodaA,B, Osamu Takeuchi
48
Ferromagnetic phase transition and thermal property of BaFe12O19
Graduate School of Natural Science and Technology, Kanazawa University, Institute of Science and TechnologyA, Saitama UniversityB
Yuta Ogasawara, Masashi OhashiA, Kenji KamishimaB
51
Temperature-induced structure-magnetic structure sequential phase transition of Y-type ferrite Ba2Fe14O22
Dept. Mater. Sci. Eng., Kyoto Univ., ISSP, Univ. TokyoA
R. Sobajima, T. Waki, J. YamauraA, Y. Tabata, H. Nakamura
52
Magnetic property of La3-xCaxMn2O7(0<x<3) II
Graduate School of Natural Science and Technology, Department of Physics, Shahjalal University of Science and TechnologyA, Kanazawa University, Institute of Science and Technology, Kanazawa UniversityB
Takumi Kanayama, Ovijit ChandrowA, Yuta Ogasawara, MD Abdul KaiumA, Shahadat HossainA, Shumsun Naher BegumA, Masashi OhashiB
53
First-principles calculation of the strain-load dependence of the anomalous Nernst effect induced by the Nodal line.
Dept. Mech. Eng. and Sic. Kyoto Univ.
Sota Hogaki, Seito Nishihara, Susumu Minami, Takahiro Shimada
54
Synthesis and magnetic properties of new two-dimensional vanadium fluorides with square lattices.
Kyoto University, IAMRDA
Kobayashi Go, Michioka Chishiro, Ueda HiroakiA
55
Magnetic and transport properties of a rare-earth transition-metal sulfide La3Fe2S7 with chiral crystal structure
Grad. Sch. Sci., Univ. of Hyogo
Makoto Hisaka, Yu Yamane, Akira Yamaguchi, Shigeki Miyasaka
56
Microwave-assisted synthesis and magnetic property of chromic material CuMoO4
Dept. of Appl. Phys., Univ. of Fukui, FIR, Univ. of FukuiA, AHMF, Osaka Univ.B
T. Iwamoto,Al Jalali MuhammadA,I Putu Abdi KaryaA, K. NakagawaA,T. Asano, S. Mitsudo,Y. NarumiB,M. HagiwaraB
57
ESR measurements of the perovskite oxide Bi0.5Pb0.5CoO3
Graduate School of Science,Kobe Univ., Molecular Photoscience Research Center Kobe Univ.A, Research Facility Center for Science and Technology,Kobe Univ.B, CROSSC, Institute of Innovative Research, Tokyo Institute of TechnologyD, Kanagawa Institute of Industrial Science and TechnologyE
S. Ishii, S. OkuboA, S. HaraB, T. SakuraiB, H. OhtaA, Y. SakaiC, M. AzumaD,E
58
Small-Angle-Neutron-Scattering on 2D XY ferromagnet K2CuF4
ISSP, UTokyo, CROSSA, Osaka Metropolitan UniversityB, The University of Electro-CommunicationsC
Makoto Ozeki,Kazuki OhishiA,Yusuke KousakaB,Yoshihiko TogawaB,Jun AkimitsuC,Takatsugu Masuda
61
Magnetic transitions and Crystal field of the polymorphic compounds RIr2Si2( R=rare earth )
General Edu. Okinawa Christian. J. College,ISSP. Univ. of TokyoA,Yamaguchi Univ.B
K. Uchima, Y. UwatokoAT. ShigeokaB
62
Magnetic and thermal properties of multiple rare earth RNi (R = Gd, Er) compounds
NIMS
L.J. Zhao, S. Nishioka, A.T. Saito
63
Synthesis and thermal properties of Er1-xGdxCoC
Graduate School of Science and Engineering, Ehime University
K. Matsumoto, T. Kuroda
64
Single crystal growth and physical properties in low temperatures of α-Ce2S3
Grad. Sch. of Eng., Muroran Inst. of Tech.
R. Ishigaki, K. Sakanashi, R. Nakano, M. Miyazaki, S. Ebisu
65
Single crystal growth of layered rare earth compound Tb8Se14.8 and pressure effect on the electrical resistivity
Grad. Sch. of Eng., Muroran Inst. of Tech.
S. Ebisu, Y. Murakami, T. Baba, M. Miyazaki
66
Complication of easy-magnetization axis and electrical resistivity of α-Dy2S3
Grad. Sch. of Eng., Muroran Inst. of Tech.
Muhamad Anif Bin Mat Nasir, T. Kona, T. Towa, M. Miyazaki, S. Ebisu
67
Temperature dependence of antisymmetric exchange interaction in chiral helical magnetism
Osaka Metropolitan Univ., AISTA
Hiroki Shoji, Tomonori ArakawaA, Yusuke Kousaka, Yoshihiko Togawa
68
Magnetism and Magnetoelectric Effect in PbMn2Ni6Te3O18-type Ferroaxial Compounds
Dept. of Mater. Sci. Osaka Metropolitan Univ.
Ryoya Nakamura, Kenta Kimura
71
Theoretical study of magneto-optical effect in magnetic octupolar magnets including altermagnets
Kyoto Univ.
Koki Shinada
72
ESR measurements of copper metaborate CuB2O4
Graduate School of Science, Kobe Univ., Research Facility Center for Science and Technology, Kobe Univ.A, Molecular Photoscience Research Center, Kobe Univ.B, Nikon Corporation, Semiconductor Lithography Business UnitC, RIKEN CEMSD, Graduate School of Frontier Sciences, University of TokyoE
T. Matsumura, S. HaraA, T. SakuraiA, S. OkuboB, H. OhtaB, M. SaitoC, S. ToyodaD, T. ArimaD,E
73
Synthesis and Physical Properties of Centrosymmetric Tetragonal Compound GdAu2Si2
Grad. School of Sci., Hokkaido Univ., ISSP, Univ. TokyoA, NIMSB
Izumi Naito, Fusako Kon, Hiroaki HayashiA, Kazunari YamauraB, Hiroyuki K. Yoshida
74
Mixed effects of magnetic ordering in the isosceles triangular lattice antiferromagnets Mn(Nb1-xTax)2O6
Iwate Univ., NIMSA
S. Goto, H. Hojo, S. Kobayashi, N. TeradaA
75
Magnetic structure analysis using Z-Rietveld software
JAEA, IHEPA
Masato Hagihala, Takashi KamiyamaA
76
Syntheses and magnetic measurements of single crystals of Mn-Fe spinel ferrite
Kyoto Univ.,IAMRDA
Rintaro Koide,Kohei Yoshinaga,Hiroaki UedaA,Chishiro Michioka
77
Ni composition dependence of magnetic susceptibility in a S = 1 one-dimensional antiferromagnet La3NiGaS7
Grad. Sch. of Sci., Univ. of Hyogo
Yu Yamane, Taichi Nagoya, Akira Yamaguchi, Akihiko Sumiyama, Shigeki Miyasaka
78
NMR study on competing spin-1/2 chain Cs2Cu2Mo3012
Sophia Univ., NIMSA, IMR Tohoku Univ.B
Yuto Moriya, Takayuki Goto, Masashi HaseA, Satoshi IguchiB, Takahiko SasakiB
81
Investigation of birefringence images of the two-dimensional antiferromagnet (C2H5NH3)2CuCl4 using machine learning
NIT, Suzuka Col. and Kagoshima Univ.A
Y. Miuara, S. Honda, H. Manaka
82
Theory of spin-orbit interaction in chiral 3D systems
Department of Physics, Nara Women's University, Strasbourg University
Haruka Kojima, Vincent Robert, Masahisa Tsuchiizu
83
ESR measurement of S=1/2 quantum magnet C9H18N2CuBr4
Grduate School of Science, Kobe Univ., Research Facility Center for Science and Technology, Kobe Univ.A, Molecular Photoscience Research Center, Kobe Univ.B, Center for Advanced High Magnetic Field Science, Graduated School of Science, Osaka Univ.C
Y. Hamada, T. SakuraiA, M. SagaA, S. HaraA, S. OkuboB, H. OhtaB, M. HagiwaraC
84
Ultrasound velocity measurements in itinerant frustrated antiferromagnet CrB2
Nihon Univ., Tech Univ. MunichA
S. Suganuma, A. BauerA, T. Watanabe
85
NMR study on the ground state of spin-1/2 square-lattice random J1-J2 Heisenberg antiferromagnet SrLaCuSb1-xNbxO6
Sophia Univ., Tokyo Inst. Tech.A
Keita Ishikura, Takayuki Goto, Masari WatanabeA, Nobuyuki KuritaA, Hidekazu TanakaA
86
NMR study on s=1/2 2D triangular-lattice antiferromagnet Ba2La2CoTe2O12
Sophia Univ., Tokyo Inst. Tech.
Keito Morioka, Takaiki Goto, Masari Watanabe, Nobuyuki Kurita, Hidekazu Tanaka
87
High-field magnetism of the triangular lattice magnet NiBr2 with cycloidal spin structure
AHMF, Grad. Sch. Sci., Osaka Univ., ISSP, Univ. TokyoA
K. Yamashita, T. Kida, Y. Narumi, K. KindoA, M. Hagiwara
88
Magnetic quadrupole interactions between ferromagnetic trimers and chirality of the trimer
Inst. for Materials Res., Tohoku Univ.,Cetr. Low Temp. Sci., Tohoku Univ.A
Shintaro NakamuraA
91
Substitution effects in chromite spinel (Mg-Co-Ni-Cu-Zn)Cr2O4
CST, Nihon Univ.
M. Endo, T. Watanabe
92
Crystal growth and Magnetism of Lacunar spinel compounds A(Mo2Re2)S8 (A = Fe, Co, Ni)
Kyoto Univ. Dep. of Mater. Sci. and Eng.
Y. Segawa, M. A. Kassem, T. Waki, Y. Tabata, H. Nakamura
93
Ground State of the Classical Kitaev-Heisenberg Model on a Honeycomb Lattice with Next Nearest Neighbor Interactions
TUS
Eiju Abe, Katsuhiro Morita, Yoshiyuki Fukumoto
94
Magnetic property of frustrated magnetic material, Cu5O2(PO4)2
Dept. of Appl. Phys., Univ. of Fukui, AHMF, Osaka Univ.A, RECAS, Ibaraki Univ.B
T. Asano, K. Sawada, J. Okamoto, Y. NarumiA, M. HagiwaraA, K. IwasaB
95
Nonlinear chiral susceptibility measurement in the canonical spin glass
Kyoto Univ.
N. Kubota, Y. Tabata, T. Waki, H. Nakamura
96
Towards the measurement of fluctuations in materials with quantum sensors
Dep. Phys. UTokyo
Hao Gu, Shunsuke Nishimura, Kento Sasaki, Kensuke Kobayashi
97
NMR techniques for detection of photo-induced effects in solids
NIMS
Atsushi Goto, Kenjiro Hashi, and Shinobu Ohki
98
Development of a pulsed high-field electron spin resonance system using a millimeter-wave band compact gyrotron
FIR-Center, Univ. of Fukui, IMR, Tohoku Univ.A, AHMF, Grad. Sch. of Sci., Osaka Univ.B
K. Kawagita, T. Ito, Y. Ishikawa, M. AkakiA, Y. NarumiB, M. HagiwaraB, Y. Fujii
105
Development of an electron spin resonance system using a multi-frequency high-power light source gyrotron and force detection system
Research Center for Development of Far-Infrared Region, Univ. of Fukui, Graduate School of Science, Kobe Univ.A, Technoassist, Co. Ltd.B, Molecular Photoscience Research Center, Kobe Univ.C
Y. Ishikawa, E. OhmichiA, T. Ito, K. Kawagita, H. TakahashiB, H. OhtaA,C, M. Fukunari, Y. Yamaguchi, Y. Tatematsu, Y. Fujii
106
Development of ultra-small resonators for electron spin resonance measurements
Res. Center for Develop. of FIR, Univ. of Fukui, Univ. of TurkuA
Y. Kurachi,Y. Fujii,Y. Ishikawa,J. JärvinenA,S. VasilievA
107
Design and evaluation of a quasi-optical system for echo measurement by pulsed ESR
FIR-C Univ. of Fukui, Dept. of Phys. Univ. of FukuiA
Y.Katayama, M.Takahashi, N.NakaneA, T.AsanoA, Y.Ishikawa, Y.Fujii, S.MitsudoA
108
Development of the terahertz magneto-spectroscopic system with helium-3 refrigerator
NIMS
Kanji TAKEHANA, Yasutaka IMANAKA
109
Pulsed high-field magnetization measurement of nitroxide radical quantum spin systems at 40 T and 1.2 K
Grad. Sch. Sci., Osaka Metro. Univ.A,RC-UHMF, Osaka Metro. Univ.B
Minori TsujibayashiA, Satoru NoguchiA,B, Shujiro NiinoA, Nobuyuki HayashiA, Yuko HosokoshiA,B
110
Development of strain measurement probe for PPMS using Fiber Bragg Grating
Graduate School of Engineering, Kyoto Univ.
Suguru Noda, Atsutoshi Ikeda, Shingo Yonezawa
111
Measurement of a permittivity by using an inexpensive vevtor network analyzer
Fac. of Eng., Univ. of Fukui, FIR Center, Univ. of FukuiA
Y.Terui, K.NakagawaA, Al Jalali MuhammadA, T.Iwamoto, I P.Abdi KaryaA, Y.Kageyama, M.Tsuruo, T.Asano, S.Mitsudo
112
Study on the microscopic structure of the IM phase of Co-Fe Prussian blue analog by 59Co-NMR measurement
TCU, NUA, TUB, FMUC
Naoto Hoshi, Takumi Matsudo, Miho Itoi, Marika YokotaA, Takayoshi YamanakaB, Takahiko SasakiB, Koichi HirakiC
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