Laboratory of Structural Inorganic Chemistry

Main Research Theme
Preparation of emerging functional ceramics  Microstructure control of ceramics and their property evaluation  New oxynitrides for optical, electromagnetic and chemical application
Research Field
Inorganic Material Science  Solid State Chemistry
Keyword
Ceramics  Oxynitride,  Crystal structure  Single crystal

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

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 Ba0.9Sr0.1NCN 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