Ibaraki University's
Frontier Research Center for Applied Atomic Sciences


IWASA Kazuaki

Other affiliation / position

  1. 教授
  2. Graduate School of Science and Engineering (Science) Department of Science (Physics Course)


  1. Tokyo Metropolitan University Department of Physics, Graduate School of Science Assistant professor 1995/04/01-2003/07/15
  2. Tohoku University Department of Physics, Graduate School of Science Associate professor 2003/07/16-2016/03/31
  3. Ibaraki University Frontier Research Center for Applied Atomic Sciences & institute of Quantum Beam Science, Graduate School of Science and Technology Professor 2016/04/01-Present

Academic background

  1. Keio University Faculty of Science and Engineering Department of Physics Others 1990/03/31 Graduated Japan
  2. Keio University Graduate School of Science and Engineering Department of Physics Master course 1992/03/31 Completed Japan
  3. Keio University Graduate School of Science and Engineering Department of Physics Doctor course 1995/03/31 Completed Japan

Academic degrees

  1. Ph.D. of Sicence Keio University 1995/03/23

Licenses and qualifications

  1. クレーン運転特別教育 1993/07
  2. エックス線作業主任者 2010/04/01
  3. 特定化学物質及び四アルキル鉛等作業主任者 2017/01/19
  4. 甲種防火管理責任者 2017/02/17

Research Areas

  1. Condensed matter physics II : Strongly correlated electron systems, Magnetism, Density wave
  2. Condensed matter physics I : Phonon properties, Quantum beam science (Neutron and X-ray)

Research keywords

  1. 中性子散乱,X線散乱,強相関電子系,構造相転移

Subject of research

  1. Investigation of high-rank electronic multipole orders in rare-earth metallic compounds 2000/08/01-2016/03/31
  2. Investigation of structural instabilities and metastable-state formation owing to anharmonic atomic vibrations 2007/04/01-2016/03/31
  3. Investigation of strongly correlated electron systems with chiral structure symmetries 2013/04/01-2016/03/31

Research Projects (Competitive Research Funds)

  1. 電荷と磁気モーメントのドープによる高次多極子秩序に拮抗する自由度の活性化 Science research expense 新学術領域研究「3D活性サイト科学, A02 活性サイトの解析と次世代3D原子イメージング技術の開発(手法)」公募研究 2017/04/01-2019/03/31
  2. Study on strongly correlated electron systems by using high-order neutron magnetic scattering processes Science research expense 基盤研究(A) 日本学術振興会 科学研究費補助金 2011/11/01-2016/03/31


  1. 日本大百科全書(ニッポニカ) 中性子回折・中性子散乱・熱中性子 小学館 2014/12/25 URL


  1. (MISC) Introduction and explanation (scientific journal) Joint 4f2配位系PrIr2Zn20における反強多極子秩序 鬼丸孝博、岩佐和晃 日本中性子科学会誌「波紋」 日本中性子科学 27/ 4, 144-147 2017/11/10
  2. Research paper (international conference proceedings) Joint Inelastic neutron scattering study on 4f-electron multipole system PrTr2X20 (Tr : transition metal, X : Al and Zn) Kazuaki Iwasa, Takahiro Onimaru, Toshiro Takabatake, Ryuji Higashinaka, Yuji Aoki, Seiko Ohira-Kawamura, Kenji Nakajima Physica B: Physics of Condensed Matter 2017/11/04 10.1016/j.physb.2017.11.002
  3. Research paper (scientific journal) Joint Magnetic Properties of Electron-Doped LaCoO3 Keisuke Tomiyasu, Mika Sato, Shun-Ichi Koyama, Tsutomu Nojima, Ryoichi Kajimoto, Sungdae Ji, and Kazuaki Iwasa J. Phys. Soc. Jpn. The Physical Society of Japan 86, 094706-1-094706-2 2017/08/23 10.7566/JPSJ.86.094706
  4. Research paper (scientific journal) Joint Crystal-electric-field excitations and spin dynamics in Ce3Co4Sn13 semimetallic chiral-lattice phase Kazuaki Iwasa, Yuka Otomo, Kazuya Suyama, Keisuke Tomiyasu, Seiko Ohira-Kawamura, Kenji Nakajima, and Jean-Michel Mignot Physical Review B American Physical Society 95, 195156 -1-195156-9 2017/05/26 10.1103/PhysRevB.95.195156
  5. Research paper (scientific journal) Joint Evidence for antiferromagnetic-type ordering of f-electron multipoles in PrIr2Zn20 Kazuaki Iwasa, Keisuke T. Matsumoto, Takahiro Onimaru, Toshiro Takabatake, Jean-Michel Mignot, and Arsen Gukasov Physical Review B American Physical Society 95, 155106-1-155106-10 2017/04/04 10.1103/PhysRevB.95.155106

Research presentations

  1. Oral presentation(general) TbB6における磁気−構造相転移の再検証 日本物理学会第73回年次大会 2018/03/24
  2. Poster presentation Unconventional order phase of PrRu4P12 studied by resonant x-ray scattering 2017年度量子ビームサイエンスフェスタ(第9回MLFシンポジウム, 第35回PFシンポジウム) 2018/03/02
  3. Poster presentation Chiral Crystal-Structure Transformation and Magnetic Excitation in Ce3Tr4Sn13 2017年度量子ビームサイエンスフェスタ(第9回MLFシンポジウム, 第35回PFシンポジウム) 2018/03/02
  4. Poster presentation 中性子回折による価数秩序物質YbPdの磁気構造の研究 日本中性子科学会第17回年会 2017/12/02
  5. Oral presentation(general) Pr1-2-20系の非磁性基底状態と多極子秩序の中性子散乱研究 日本中性子科学会第17回年会 2017/12/02


  1. JPSJ Outstanding Referee 2018/03/23
  2. 第12回論文賞 "Evidence for Magnetic-Field-Induced Quadrupolar Ordering in the Heavy-Fermion Superconductor PrOs4Sb12," J. Phys. Soc. Jpn., Vol.72, No.5 pp1002 (2003). 2007/09/23

Alloted class

  1. 物理学ゼミナールI
  2. 外書購読I
  3. 卒業研究

Memberships of academic societies

  1. The Japanese Society for Neutron Science
  2. The Physical Society of Japan 1991/01/01-Present