Japanese Page

PI Akira Miura 　Associate Professor

PI message

Just as informatics and artificial intelligence are changing our daily lives, they are also changing the creation of materials in chemistry. However, there are currently many challenges in creating materials with these new methods, and it seems that the combination of classical theory, computational chemistry, and researchers’ sense and observation is indispensable in the “post-informatics era” to clarify the properties of materials. We aim for breakthroughs in new synthetic methods, novel properties, new theories, and untapped analytical methods to create innovative materials from the vast combinations of elements in the periodic table handled by inorganic materials chemistry. We hope that you will experience the addictive nature of expressing your creativity in the world through the creation of new materials.

PI Yuji Masubuchi　Associate Professor

PI message

Most of inorganic materials, Ceramics, are metal oxides and their functionalities are controlled and improved by mixing several metal elements into the oxides. For the further development in inorganic materials, novel compounds are required to be created. Our group focuses on synthesize novel compounds which never exist, by combination of several anions as well as cations. Nitrogen is common element present in air and most stable molecule. Our research target is novel compounds containing nitrogen, especially metal oxynitrides. They have unique dielectric and optical properties. Although synthesis of novel compounds is not facile issue, we are enjoying the challenge to create new compounds which are never known.

Research

Our research group focuses to find out new functional inorganic materials and their application development. One of our research characteristics is a synthesis of new highly functional oxide, nitride and oxynitride ceramics. We are studying on the development of low temperature and environmental benign preparation methods. Formation of thin film, nano-sized crystals, and large single crystals, and also microstructure control are important in our investigation.

Member

• Akira Miura

  Professor

  Research Field

  Synthesis reaction design, nitrides, sulfides, crystal structure analysis
• Yuji Masubuchi

  Associate Professor

  Research Field

  functional oxynitride, crystal structure

Main Research Achievements

• Low temperature synthesis of barium oxynitridosilicates using BaCN₂ and SiO₂, Yuji Masubuchi, Naoki Sada, Yoshiteru Kawahara, Kenji Arai, Teruki Motohashi and Mikio Higuchi, Dalton Transactions, 50 (2021) 5883-5889,
  DOI: 10.1039/D1DT00824B
• Ternary carbodiimide compound Ba_0.9Sr_0.1NCN with distorted rutile-type structure, Yuji Masubuchi, Suzuka Miyazaki, Kotaro Fujii, Masatomo Yashima, Akira Miura, Mikio Higuchi, Journal of Solid State Chemistry, 296 (2021) 122000/1-6,
  DOI: 10.1016/j.jssc.2021.122000
• Formation and morphological change of BaTaO₂N perovskite from BaCN₂/Ta₂O₅ mixture, Akira Hosono, Yuji Masubuchi, Kyohei Koyama, Mikio Higuchi, Shinichi Kikkawa, Journal of Alloys and Compounds, 836 (2020) 155459/1-7,
  DOI: 10.1016/j.jallcom.2020.155459
• Large red-shift of luminescence from BaCN₂:Eu²⁺ red phosphor under high pressure, Yuji Masubuchi, Sayaka Nishitani, Suzuka Miyazaki, Hansen Hua, Jumpei Ueda, Mikio Higuchi, Setsuhisa Tanabe, Applied Physics Express, 13 (2020) 042009/1-3,
  DOI: 10.35848/1882-0786/ab8055
• Ferroelectric BaTaO₂N Crystals Grown in a BaCN₂ Flux, Akira Hosono, Yuji Masubuchi, Shintaro Yasui, Masaki Takesada, Takashi Endo, Mikio Higuchi, Mitsuru Itoh, Shinichi Kikkawa, Inorganic Chemistry, 58 (2019) 16752-16760
  DOI: 10.1021/acs.inorgchem.9b02917
• Red-emission over a wide range of wavelength at various temperatures from tetragonal BaCN₂:Eu²⁺, Yuji Masubuchi, Sayaka Nishitani, Akira Hosono, Yuuki Kitagawa, Jumpei Ueda, Setsuhisa Tanabe, Hisanori Yamane, Mikio Higuchi, Shinichi Kikkawa, Journal of Materials Chemistry C, 6 (2018) 6370-6377,
  DOI: 10.1039/C8TC01289J
• Piezoresponse and microstructure of BaTaO₂N, Akira Hosono, Yuji Masubuchi, Yuki Nagamine, Takeshi Shibahara, Shinichi Kikkawa, Journal of the European Ceramic Society, 38 (2018) 3478-3482,
  DOI: 10.1016/j.jeurceramsoc.2018.04.001
• Synthesis of the perovskite SrTaO₂N using C₃N₄ for both reduction and nitridation, Yuji Masubuchi, Mikiya Tadaki, Shinichi Kikkawa, Chemistry Letters, 47 (2018) 31-33.
  DOI: 10.1246/cl.170953
• Processing of dielectric oxynitride perovskites for powder, ceramics, compacts, and thin films, Yuji Masubuchi, Shi-Kuan Sun, Shinichi Kikkawa, Dalton Transactions, 44 (2015) 10570-10581

Contact

yuji-mas(at)eng.hokudai.ac.jp

amiura(at)eng.hokudai.ac.jp