@article{CTT100911397,
  author = {Reika Ota and Shinnosuke Yasuoka and Ryoichi Mizutani and Takahisa Shiraishi and Kazuki Okamoto and Kuniyuki Kakushima and Tomoyuki Koganezawa and Osami Sakata and Hiroshi Funakubo},
  title = {Scalable ferroelectricity of 20-nm-thick (Al0.8Sc0.2)N thin films sandwiched between TiN electrodes},
  journal = {J. Appl. Phys.},
  year = 2023,
}

@article{CTT100904747,
  author = {Xueyou Yuan and Kazuki Okamoto and Mitsuki Kawano and Masahito Yoshino and Takanori Nagasaki and Yasuhiko Imai and Osami Sakata and Tomoaki Yamada},
  title = {Extraordinarily Large Contribution Ratio of Ferroelastic Domain Switching to Piezoresponse in Monoclinic (K, Na)NbO3 Films},
  journal = {Advanced Electronic Materials},
  year = 2023,
}