ホーム » 研究成果

研究成果

① 原著論文 (特に重要なもののみ抜粋)

  1. Y. Shiratsuchi, H. Noutomi, H. Oikawa, T. Nakamura, M. Suzuki, T. Fujita, K. Arakawa, Y. Takechi, H. Mori, T. Kinoshita, M. Yamamoto, and R. Nakatani: “Detection and In Situ Switching of Unreversed Interfacial Antiferromagnetic Spins in a Perpendicular-Exchange-Biased System”, Physical Review Letters, 109, 77202_1-77202_5 (2012).
  2. C. L. Chen, J.-G. Lee, K. Arakawa, and H. Mori: “Comparative Study on Size Dependence of Melting Temperatures of Pure Metal and Alloy Nanoparticles”, Applied Physics Letters, 99, 013108_1-013108_3 (2011).
  3. T. Amino, K. Arakawa, and H. Mori: “Reaction Rate between 1D migrating Self-Interstitial Atoms: An Examination by Kinetic Monte Carlo Simulation”, Philosophical Magazine, 91, 3276-3289 (2011) (corresponding author).
  4. C. L. Chen, J.-G. Lee, K. Arakawa, and H. Mori: “Quantitative Analysis on Size Dependence of Eutectic Temperature of Ag-Pb System”, Applied Physics Letters, 98, 83108-1-83108-3 (2011).
  5. T. Amino, K. Arakawa, and H. Mori: “Activation Energy for Long-Range Migration of Self-Interstitial Atoms in Tungsten Obtained by Direct Measurement of Radiation-Induced Point-Defect Clusters”, Philosophical Magazine Letters, 91, 86-96 (2011) (corresponding author).
  6. K. Arakawa, T. Amino, and H. Mori: “Direct Observation of the Coalescence Process between Nanoscale Dislocation Loops with Different Burgers Vectors”, Acta Materialia, 59, 141-145 (2011).
  7. C. L. Chen, J.-G. Lee, K. Arakawa, and H. Mori: “In situ Observations of Crystalline-to-liquid and Crystalline-to-gas Transitions of Substrate-Supported Ag Nanoparticles”, Applied Physics Letters, 96, 253104-1-253104-3 (2010).
  8. S.L. Dudarev, M.R. Gilbert, K. Arakawa, H. Mori, Z. Yao, M.L. Jenkins, and P.M. Derlet: “A Langevin Model for Real-Time Brownian Dynamics of Interacting Nano-Defects in Irradiated Metals”, Physical Review B (Selected as Editors’ Suggestion), 81, 224107-1-224107-15 (2010).
  9. K. Arakawa, K. Ono, M. Isshiki, K. Mimura, M. Uchikoshi, and H. Mori: “Observation of the One-Dimensional Diffusion of Nanometer-Sized Dislocation Loops”, Science, 318, 956-959 (2007).
  10. K. Ono, M. Miyamoto, and K. Arakawa: “Dynamical Interaction of Helium Bubbles with Grain Boundaries in Fe and Fe-Cr Ferritic Alloy”, Journal of Nuclear Materials, 367-370, 522-526 (2007).
  11. F. Kawamura, H. Umeda, M. Kawahara, M. Yoshimura, Y. Mori, T. Sasaki, H. Okado, K. Arakawa, and H. Mori: “Drastic Decrease in Dislocations during the LPE Growth of GaN Single Crystals using Na Flux Method without any Artificial Processes”, Japanese Journal of Applied Physics, 45, 2528-2530 (2006).
  12. K. Arakawa, M. Hatanaka, E. Kuramoto, K. Ono, and H. Mori: “Change in the Burgers Vector of Perfect Dislocation Loops without Contact with the External Dislocations”, Physical Review Letters, 96, 125506-1－125506-4 (2006).
  13. K. Ono, K. Arakawa, H. Shibasaki, H. Kurata, I. Nakamichi and N. Yoshida: “Release of Helium from Irradiation Damage in Fe-9Cr Ferritic Alloy”, Journal of Nuclear Materials, 329-333, 933-937 (2004).
  14. K. Arakawa, M. Hatanaka, H. Mori, and K. Ono: “Effects of Chromium on the One-Dimensional Motion of Interstitial-Type Dislocation Loops in Iron”, Journal of Nuclear Materials, 329-333, 1194-1198 (2004).
  15. S. Arai, Y. Satoh, K. Arakawa, C. Morita, and M. Kiritani: “Localized Electron Irradiation Methods and Their Application to Detection of Flow-Field of Point Defects”, Journal of Electron Microscopy, 53, 21-27 (2004).
  16. K. Arakawa, K. Saitoh, H. Mori, and K. Ono; “Comparison among the Formation Processes of Extended Defects in Si under Low-energy H+, He+ Ions and High-energy Electrons”, Nuclear Instruments and Methods in Physics Research B, 206, 76-80 (2003).
  17. K. Arakawa, K. Ono, H. Tanigawa, Y. Katoh, A. Kohyama, and M. Kiritani; “Deformation of Thin Foil of Fcc and Bcc Metals Containing Pre-introduced Secondary Defects”, Materials Science and Engineering A, 350, 53-56 (2003).
  18. K. Arakawa, H. Mori, and K. Ono; “Formation Process of Dislocation Loops in Iron under the Irradiation with Low-energy Helium, Hydrogen Ions and High-energy Electrons”, Journal of Nuclear Materials, 307-311, 272-277 (2002).
  19. K. Ono, K. Arakawa, H. Hojou; “Formation and Migration of Helium Bubbles in Fe and Fe-9Cr Ferritic Alloy”, Journal of Nuclear Materials, 307-311, 1507-1512 (2002).
  20. K. Arakawa, S. Arai, H. Orihara, K. Ono, and M. Kiritani; “Study on the Mechanism of the Growth and the Shrinkage of Stacking Fault Tetrahedra using the Fluctuation of Their Size under Electron Irradiation”, Journal of Electron Microscopy, 51(Supplement), S225-S230 (2002).
  21. K. Arakawa, R. Imamura, K. Ohta, and K. Ono; “Evolution of Point Defect Clusters in Pure Iron under Low Energy He+ Irradiation”, Journal of Applied Physics, 89, 4752-4757 (2001).
  22. K. Arakawa, Y. Satoh, S. Arai and M. Kiritani; “Fluctuation of Point Defect Reactions Observed during the Growth of Dislocation Loops under Electron Irradiation”, Philosophical Magazine A, 80, 2041-2055 (2000).
  23. K. Arakawa, T. Tsukamoto, K. Tadakuma, K. Yasuda, and K. Ono; “In-situ Observation of the Microstructural Evolution in Germanium under the Low Energy Helium Ion Irradiation”, Journal of Electron Microscopy, 48, 399-405 (1999).
  24. M. Kiritani, Y. Satoh, Y. Kizuka, K. Arakawa, Y. Ogasawara, S. Arai, and Y. Shimomura; “Anomalous Production of Vacancy Clusters and the Possibility of Plastic Deformation of Crystalline Metals without Dislocations”, Philosophical Magazine Letters, 79, 797-804 (1999).
  25. K. Ono, K. Arakawa, and N. Yoshida; “Dynamical Process of Defects Clustering in Ni under the Irradiation of Low Energy Helium Ions”, Journal of Nuclear Materials, 271&272, 214-219 (1999).
  26. S. Arai, C. Morita, K. Arakawa, and M. Kiritani; “Improvement and Application of Intermittent Electron Irradiation Technique with a High Voltage Electron Microscope”, Journal of Electron Microscopy, 44, 1-7 (1995). (1998年1月 日本電子顕微鏡学会 論文賞)

② 国際会議での招待講演およびセミナーでの依頼講演 (荒河が招待され、荒河が講演したもののみ抜粋)

a. 国際会議招待講演

  1. “In-situ TEM Study of Dynamics of Dislocation Loops in Fe and Fe-Cr Alloys”, GETMAT (Generation IV and Transmutation Materials), (Sept 17- 19, 2013, Berlin, Germany).
  2. “Recent Studies on Elementary Processes of Radiation Damage using in-situ TEM”, MRS Fall Meeting 2012, Materials under Extremes: from Fundamentals to Component Behavior (Nov 26- 30, 2012, Boston, MA, USA).
  3. “High-Energy Electron Irradiation of Metals-Effects of High Dose Rate and Properties of Single Point Defects-”, Workshop on Ion Implantation as a Neutron Irradiation Analogue (Sept. 26-28, 2011, Oxford, UK).
  4. “In Situ TEM Study of Dynamic Behaviors of Nanoscale Defects: Similarities and Differences between Experiments and Simulations”, The Fifth International Conference on Multiscale Materials Modeling 2010, Radiation Effects (Oct. 4- 8, 2010, Freiburg, Germany).
  5. “Direct In-situ Electron Microscope Observations of Dynamics of Radiation Defects in Irradiated Materials”, CIMTEC 2010, 5th Forum on New Materials, Materials Challenges for Future Nuclear Fission and Fusion Technologies (June 13- 18, 2010, Montecatini Terme, Italy).
  6. “Studies on Electron-Irradiation Produced Lattice Defects in Metals with HVEM”, The Twelfth Frontiers of Electron Microscopy in Materials Science, In-Situ & Ultra-Fast Analysis (Sept. 27- Oct. 2, 2009, Sasebo, Japan).
  7. “In-situ TEM Observation of the One-Dimensional Diffusion of Nanometer-Sized Interstitial-Type Dislocation Loops”, MRS Fall Meeting 2008, Materials for Future Fusion and Fission Technologies (Dec 1- 5, 2008, Boston, MA, USA).
  8. “In-Situ Transmission Electron Microscopy Study of the Dynamics of Point-Defect Clusters”, Electron Microscopy and Multiscale Modeling (EMMM07) (Sep. 3-7, 2007, Shubnikov Institute of Crystallography, Moscow, Russia).
  9. “Dynamics of Nanometer-Sized Interstitial-Type Dislocation Loops in Iron by In Situ TEM”, TMS 2007 136th Annual Meeting & Exhibition, Microstructural Processes in Irradiated Materials (Feb 25-March 1, 2007, Orlando, Florida, USA).
  10. “Dynamic Behavior of Nanometer-Sized Interstitial-Type Dislocation Loops in Iron by In-situ TEM”, The 12th International Symposium on Plasticity & Its Current Applications (July 17-22, 2006, Halifax, NS, Canada).
  11. “One-Dimensional Motion of Interstitial-Type Dislocation Loops in Fe-Cr Alloys by In-situ TEM”, Towards a Multiscale Modeling Approach of Radiation Damage in High-Cr Steels: Computer Simulation and Experimental Validation (Feb. 21, 2006, SCK-CEN, Mol, Belgium).

b. セミナー (外国) での依頼講演

  1. “Detection of Point-Defect Dynamics in Metals using High-Voltage Electron Microscopy” (Sept. 10, 2012, CEA-Saclay, France).
  2. “Studies on Dynamics of Radiation-Produced Defects in Metals using TEM/ HVEM” (Oct 3, 2011, Lawrence Livermore National Laboratory, US).
  3. “Studies on Dynamics of Radiation-Produced Defects in Metals using TEM/ HVEM” (Sept 15, 2011, University of Lille 1, France).
  4. “Topics of Experiments with the HVEM at Osaka University” (Oct 10, 2008, KBSI, Korea).
  5. “Observation of the One-Dimensional Diffusion of Nanometer-Sized Prismatic Dislocation” (July 9, 2008, CEA-Saclay, France).
  6. “Direct Observation of Thermally Activated Nanoscale Processes in Metals by In-Situ Transmission Electron Microscopy” (July 7, 2008, Imperial College London, UK).
  7. “In situ TEM Study of Dynamics of Point-Defect Clusters” (Feb 28, 2006, Oxford University, UK).
  8. “Dynamics of Nanometer-Sized Interstitial-Type Dislocation Loops in Iron by In situ Transmission Electron Microscopy” (Feb 27, 2006, UKAEA, Culham, UK).
  9. “Dynamics of Nanometer-Sized Interstitial-Type Dislocation Loops in Iron by In situ Transmission Electron Microscopy” (Feb 23, 2006, CEA-Saclay, France).