Study of photo-spin science on the next-generation with multiple phase transition materials

2012 Fiscal Year Final Research Report

• Project/Area Number: 20675001
• Research Category: Grant-in-Aid for Young Scientists (S)
• Allocation Type: Single-year Grants
• Research Field: Physical chemistry
• Research Institution: The University of Tokyo
• Principal Investigator: OHKOSHI Shin-ichi 東京大学, 大学院・理学系研究科, 教授 (10280801)
• Project Period (FY): 2008 – 2012
• Keywords: 相転移 / スピン化学 / 磁性 / 誘電性 / 光物性 / ナノ微粒子 / 強磁性体 / 非線形光学

Research Abstract

This project was promoted with the objective to create new materials where several phase transition phenomena entwine in a multidimensional way and to discover next-generation optical spin science phenomena. We have achieved optical spin phase transition phenomenon and observation of magnetization-induced second harmonic generation in a chiral ferromagnetic complex, as well as electromagnetic wave absorption in the subterahertz region with epsilon-iron oxide and optical-switching of magnetization-induced second harmonic generation on an iron-rhodium thin film surface.

Research Products

• [Journal Article] Photomagnetism in cyano-bridged bimetal assemblies (2012)
  • Author(s): S. Ohkoshi and H. Tokoro
  • Journal Title: Acc. Chem. Res. Volume: 455 Pages: 1749
  • DOI: DOI:10.1021/ar300068k
  • Peer Reviewed
• [Journal Article] Conjunction of Chirality and Slow Magnetic Relaxation in the Supramolecular Network Constructed of Crossed Cyano-Bridged防護材妊婦・子供電磁干渉防止材内視鏡手術ミリ波素子アイソレーターCoII-WV Molecular Chains (2012)
  • Author(s): S. Chorazy, K. Nakabayashi, K. Imoto J. Mlynarski, B. Sieklucka, S. Ohkoshi
  • Journal Title: J. Am. Chem. Soc. Volume: 134 Pages: 16151
  • DOI: DOI:10.1021/ja307520k
  • Peer Reviewed
• [Journal Article] Multiferroics by rational design: implementing ferroelectricity in molecule- based magnets (2012)
  • Author(s): E. Pardo, C. Train, H. Liu, L. M. Chamoreau, B. Dhkil, K. Boubekeur, F. Lloret, K. Nakatani, H. Tokoro, S. Ohkoshi, M. Verdaguer
  • Journal Title: Angew. Chem. Int. Ed. Volume: 51 Pages: 8356
  • DOI: DOI:10.1002/anie.201202848
  • Peer Reviewed
• [Journal Article] Light-induced magnetization with a high Curie temperature and a large coercive field in a Co-W bimetallic assembly (2012)
  • Author(s): N. Ozaki, H. Tokoro, Y. Hamada, A. Namai, T. Matsuda, S. Kaneko, S. Ohkoshi
  • Journal Title: Adv. Funct. Mater. Volume: 20 Pages: 2089
  • DOI: DOI:10.1002/adfm.201290061
  • Peer Reviewed
• [Journal Article] Zero thermal expansion fluid and oriented film based on a bistable metal-cyanide polymer (2012)
  • Author(s): H. Tokoro, K. Nakagawa, K. Imoto, F. Hakoe, S. Ohkoshi
  • Journal Title: Chem. Mater. Volume: 24 Pages: 1324
  • DOI: DOI:10.1021/cm203762k
  • Peer Reviewed
• [Journal Article] Novel magnetic functionalities of Prussianblue analogs (2011)
  • Author(s): H. Tokoro and S. Ohkoshi
  • Journal Title: Dalton Trans. Volume: 40 Pages: 6825
  • DOI: DOI:10.1039/C0DT01829E
  • Peer Reviewed
• [Journal Article] Light-induced spin-crossover magnet (2011)
  • Author(s): S. Ohkoshi, K. Imoto, Y. Tsunobuchi, S. Takano, H. Tokoro
  • Journal Title: Nature Chemistry Volume: 3 Pages: 564
  • DOI: DOI:10.1038/NCHEM.1067
  • Peer Reviewed
• [Journal Article] ε-Fe2O3: An advanced nanomaterial exhibiting giant coercive field, millimeter- wave ferromagnetic resonance, and magneto- electric coupling (2010)
  • Author(s): J. Tucek, R. Zboril, A. Namai, S. Ohkoshi
  • Journal Title: Chem. Mater. Volume: 22 Pages: 6483
  • DOI: DOI:10.1021/cm101967h
  • Peer Reviewed
• [Journal Article] Synthesis of an electromagnetic wave absorberfor high-speed wireless communication (2009)
  • Author(s): A. Namai, S. Sakurai, M. Nakajima, T. Suemoto, K. Matsumoto, M. Goto, S. Sasaki, S. Ohkoshi
  • Journal Title: J. Am. Chem. Soc. Volume: 131 Pages: 1170
  • DOI: DOI:10.1021/ja807943v
  • Peer Reviewed
• [Journal Article] Electric-field-induced charge-transfer phase transition: a promising approach toward electrically switchable devices (2009)
  • Author(s): T. Mahfoud, G. Molnar, S. Bonhommeau, S. Cobo, L. Salmon, P. Demont, H. Tokoro, S. Ohkoshi, K. Boukheddaden, A. Bousseksou
  • Journal Title: J. Am. Chem. Soc. Volume: 131 Pages: 15049
  • DOI: DOI:10.1021/ja9055855
  • Peer Reviewed
• [Journal Article] First observation of phase transformation of all four Fe2O3 phases (γ→ε→ss→α-phase) (2009)
  • Author(s): S. Sakurai, A. Namai, K. Hashimoto, S. Ohkoshi
  • Journal Title: J. Am. Chem. Soc. Volume: 131 Pages: 18299
  • DOI: DOI:10.1021/ja9046069
  • Peer Reviewed
• [Journal Article] Large magnetization-induced second harmonic generation in an enantiopure chiral magnet (2009)
  • Author(s): C. Train, T. Nuida, R. Gheorghe, M. Gruselle, S. Ohkoshi
  • Journal Title: J. Am. Chem. Soc. Volume: 131 Pages: 16838
  • DOI: DOI:10.1021/ja9061568
  • Peer Reviewed
• [Journal Article] Evidence for complex multistability in photomagnetic cobalt hexacyanoferrates from combined magnetic and synchrotron x-ray diffraction measurements (2009)
  • Author(s): I. Maurin, D. Chernyshov, F. Varret, A. Bleuzen, H. Tokoro, K. Hashimoto, S. Ohkoshi
  • Journal Title: Phys. Rev. B Volume: 79 Pages: 064420
  • DOI: DOI:10.1103/PhysRevB.79.064420
  • Peer Reviewed
• [Journal Article] Preparation of the nanowire form of ε-Fe2O3 single crystal and a study of the formation process (2008)
  • Author(s): S. Sakurai, K. Tomita, H.Yashiro, K. Hashimoto, and S. Ohkoshi
  • Journal Title: J. Phys. Chem. C. Volume: 112 Pages: 20212
  • DOI: DOI:10.1021/jp806336f
  • Peer Reviewed
• [Presentation] Novel optical functionalities onmetal oxide nanomaterials (2012)
  • Author(s): S. Ohkoshi
  • Organizer: The collaborative conference on crystal growth
  • Place of Presentation: Orlando, USA.
  • Year and Date: 2012-12-13
• [Presentation] Novel optical functionalities in cyano-bridged bimetal assemblies and metal oxide-based nanomaterials (2012)
  • Author(s): S. Ohkoshi
  • Organizer: International school & symposium on molecular materials & devices
  • Place of Presentation: Durham, UK.
  • Year and Date: 2012-09-27
• [Presentation] Novel optical functionalities on cyano-bridged bimetal assemblies and metal oxide nanomaterials (2012)
  • Author(s): S. Ohkoshi
  • Organizer: Collaborative conference on materials research
  • Place of Presentation: Seoul, Korea.
  • Year and Date: 2012-06-25
• [Presentation] New phase-induced phase transition phenomena on cyano-bridged bimetal assemblies and metal oxide-based nanomaterials (2012)
  • Author(s): S. Ohkoshi
  • Organizer: PDSTM2012
  • Place of Presentation: Versailles France.
  • Year and Date: 2012-05-22
• [Presentation] Photoresponsive inorganic materials (2012)
  • Author(s): S. Ohkoshi
  • Organizer: 4th International Conference "Smart Materials, Structures and Systems"
  • Place of Presentation: Montecatini Terme, Italy.
  • Year and Date: 2012-03-06
• [Presentation] Novel functionalities on metal complex material and metal oxide-based nanomaterial (2011)
  • Author(s): S. Ohkoshi
  • Organizer: International symposium on advanced complex inorganic nanomaterials
  • Place of Presentation: Namur, Belgium.
  • Year and Date: 2011-09-13
• [Presentation] Novel photo-induced phase transition materials (2011)
  • Author(s): S. Ohkoshi
  • Organizer: France-Japan coordination chemistry symposium
  • Place of Presentation: Rennes, France.
  • Year and Date: 2011-06-30
• [Presentation] Novel magnetic functionalities on cyano-bridged metal assemblies (2010)
  • Author(s): S. Ohkoshi
  • Organizer: The 12th international conference on molecule- based magnets
  • Place of Presentation: Beijing, China.
  • Year and Date: 20101008-11
• [Presentation] Functional Molecule-Based Magnets (2010)
  • Author(s): S. Ohkoshi
  • Organizer: Pacifichem 2010 Congress
  • Place of Presentation: Hawaii, USA.
  • Year and Date: 2010-12-19
• [Presentation] Ferroelectric-ferromagnetism and photomagnetism in cyano-bridged metal assemblies (2009)
  • Author(s): S. Ohkoshi
  • Organizer: The 2nd Asian conference on coordination chemistry
  • Place of Presentation: Nanjing, China.
  • Year and Date: 20091101-4
• [Presentation] Photomagnetism and ferroelectric-ferromagnetism in cyano- bridged metal assemblies (2009)
  • Author(s): S. Ohkoshi
  • Organizer: European conference on molecular magnetism 2009
  • Place of Presentation: Wroclw, Poland.
  • Year and Date: 20091004-7
• [Presentation] New magnetic functionalities in molecule-based and metal oxide-based magnets (2008)
  • Author(s): S. Ohkoshi
  • Organizer: Invited lecture
  • Place of Presentation: Versailles University, France.
  • Year and Date: 2008-06-17
• [Presentation] New magnetic functionalitiesin cyano-bridged metallic assemblies (2008)
  • Author(s): S. Ohkoshi
  • Organizer: CIM2 conference
  • Place of Presentation: University of Paris 6, France.
  • Year and Date: 2008-06-16
• [Book] 光スイッチング磁石 (2012)
  • Author(s): 所裕子, 井元健太, 大越慎一
  • Total Pages: 60, 17
  • Publisher: 日刊工業出版プロダクション
• [Book] 新規な高機能を発現する金属酸化物微粒子 (2012)
  • Author(s): 大越慎一
  • Total Pages: 32, 4
  • Publisher: ニュートンプレス
• [Book] イプシロン型‐酸化鉄磁性体の高周波ミリ波吸収 (2011)
  • Author(s): 大越慎一, 生井飛鳥
  • Total Pages: 31, 27
  • Publisher: シーエムシー出版
• [Book] High-frequency millimeter wave absorber composed of a new series of iron oxide nanomagnets (2010)
  • Author(s): A. Namai, S. Ohkoshi
  • Total Pages: 25
  • Publisher: Advanced trends in wireless communication
• [Book] 光磁性 (2009)
  • Author(s): 大越慎一
  • Total Pages: 175
  • Publisher: ミュージアム図書
• [Book] 外場応答磁性体 (2009)
  • Author(s): 大越慎一
  • Total Pages: 148
  • Publisher: シーエムシー出版
• [Book] 無限磁性錯体 (2009)
  • Author(s): 大越慎一
  • Total Pages: 279
  • Publisher: 三共出版
• [Book] 高速無線通信向け電磁波吸収磁性材料の開発 (2009)
  • Author(s): 大越慎一
  • Total Pages: 258, 45
  • Publisher: 科学技術出版
• [Book] 磁気機能 (2009)
  • Author(s): 大越慎一, 所裕子
  • Total Pages: 128
  • Publisher: フロンティア出版
• [Book] マルチフェロイック材料における磁化誘起非線形光学効果 (2009)
  • Author(s): 大越 慎一, 縫田知宏, 所裕子
  • Publisher: ティー・アイ・シィー
• [Book] 光磁性現象と非線形磁気光学現象 (2008)
  • Author(s): 大越慎一
  • Total Pages: 268
  • Publisher: 三共出版
• [Book] 光磁性体
  • Author(s): 所裕子,大越慎一
  • Total Pages: 15
  • Publisher: アグネ技術センター
• [Remarks] アウトリーチ活動(計6件のうち1件を記載)第18回東京大学理学部公開講演会2010年11月7日、東京大学安田講堂、600人.研究室ホームページ
  • URL: http://www.chem.s.u-tokyo.ac.jp/users/ssphys/index.html
• [Patent(Industrial Property Rights)] ミリ波帯非可逆素子 (2012)
  • Inventor(s): 大越慎一, 他1名
  • Industrial Property Number: 米国特許US 8335037
  • Filing Date: 2012-12-08
  • Overseas
• [Patent(Industrial Property Rights)] 磁性酸化鉄粒子, 磁性体, および電波吸収体 (2012)
  • Inventor(s): 大越慎一, 他4名
  • Industrial Property Number: 中国特許200880018234.1
  • Filing Date: 2012-07-04
  • Overseas
• [Patent(Industrial Property Rights)] 電波吸収材料用の磁性結晶および電波吸収体 (2011)
  • Inventor(s): 大越慎一、他5名
  • Industrial Property Number: 米国特許US 8072365
  • Filing Date: 2011-12-06
  • Overseas
• [Patent(Industrial Property Rights)] イプシロン型酸化鉄の保磁力向上方法およびイプシロン型酸化鉄 (2010)
  • Inventor(s): 大越慎一. 他6名
  • Industrial Property Number: 米国特願13/499172
  • Filing Date: 2010-09-30
  • Overseas
• [Patent(Industrial Property Rights)] 磁性薄膜の製造方法、磁性薄膜及び磁性体 (2010)
  • Inventor(s): 大越慎一, 他3名
  • Industrial Property Number: 米国特願13/378730
  • Filing Date: 2010-06-24
  • Overseas
• [Patent(Industrial Property Rights)] ミリ波帯非可逆素子 (2008)
  • Inventor(s): 大越慎一, 他1名
  • Industrial Property Number: 米国特許 8335037
  • Acquisition Date: 2008-10-17
  • Overseas
• [Patent(Industrial Property Rights)] 磁性材スラリー、その磁性材スラリーの製造方法、磁性材薄膜及び磁性体 (2008)
  • Inventor(s): 大越慎一, 他2名
  • Industrial Property Number: 特許第05102154号
  • Filing Date: 2008-10-17
• [Patent(Industrial Property Rights)] 磁性酸化鉄粒子、磁性体、および電波吸収体 (2008)
  • Inventor(s): 大越慎一, 他4名
  • Industrial Property Number: 欧州特願8764894.5
  • Filing Date: 2008-05-30
  • Overseas
• [Patent(Industrial Property Rights)] 磁性材スラリー、その磁性材スラリーの製造方法、磁性材薄膜及び磁性体 (2008)
  • Inventor(s): 大越慎一, 他2名
  • Industrial Property Number: 特許第05102154号
  • Filing Date: 2008-10-05