@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{CTT100911395, author = {Shinnosuke Yasuoka and Ryoichi Mizutani and Reika Ota and Takahisa Shiraishi and Takao Shimizu and Kazuki Okamoto and Masato Uehara and Hiroshi Yamada and Morito Akiyama and Hiroshi Funakubo}, title = {Invariant polarization switching kinetics in an (Al0.2Sc0.8)N film with frequency and temperature}, journal = {Appl. Phys. Lett.}, year = 2023, } @article{CTT100890868, author = {Shinnosuke Yasuoka and Ryoichi Mizutani and Reika Ota and Takahisa Shiraishi and Takao Shimizu and Masato Uehara and Hiroshi Yamada and Morito Akiyama and Hiroshi Funakubo}, title = {Tunable Ferroelectric Properties in Wurtzite (Al0.8Sc0.2)N via Crystal Anisotropy}, journal = {ACS Appl. Electron. Mater.}, year = 2022, } @article{CTT100889889, author = {Shinnosuke YASUOKA and Ryoichi MIZUTANI and Reika OTA and Takahisa SHIRAISHI and Takao SHIMIZU and Shintaro YASUI and Yoshitaka EHARA and Ken NISHIDA and Masato UEHARA and Hiroshi YAMADA and Morito AKIYAMA and Yasuhiko IMAI and Osami SAKATA and Hiroshi FUNAKUBO}, title = {Enhancement of crystal anisotropy and ferroelectricity by decreasing thickness in (Al,Sc)N films}, journal = {J. Ceram. Soc. Jpn.}, year = 2022, } @article{CTT100890774, author = {Masato Uehara and Ryoichi Mizutani and Shinnosuke Yasuoka and Takao Shimizu and Hiroshi Yamada and Morito Akiyama and Hiroshi Funakubo}, title = {Lower ferroelectric coercive field of ScGaN with equivalent remanent polarization as ScAlN}, journal = {Appl. Phys. Exp.}, year = 2022, } @article{CTT100864854, author = {Masato Uehara and Ryoichi Mizutani and Shinnosuke Yasuoka and Takahisa Shiraishi and Takao Shimizu and Hiroshi Yamada and Morito Akiyama and Hiroshi Funakubo}, title = {Demonstration of ferroelectricity in GaN-based thin film}, journal = {Appl. Phys. Lett.}, year = 2021, } @article{CTT100864826, author = {Ryoichi Mizutani and Shinnosuke Yasuoka and Takahisa Shiraishi and Takao Shimizu and Masato Uehara and Hiroshi Yamada and Morito Akiyama and Osami Sakata and Hiroshi Funakubo}, title = {Thickness scaling of (Al0.8Sc0.2)N films with remanent polarization beyond 100 μC/cm2 around 10 nm in thickness}, journal = {Appl. Phys. Exp.}, year = 2021, } @inproceedings{CTT100904716, author = {Masato Uehara and Ryoichi Mizutani and Shinnosuke Yasuoka and Takao Shimizu and Hiroshi Yamada and Morito Akiyama and Hiroshi Funakubo}, title = {Demonstration of Ferroelectric Properties in GaN Alloyed with Sc}, booktitle = {}, year = 2022, } @inproceedings{CTT100902544, author = {Hiroshi Funakubo and Shinnosuke Yasuoka and Ryoichi Mizutani and Takahisa Shiraishi and Akinori Tateyama and Reika Ota and Kazuki Okamoto and Takao Shimizu and Masato Uehara and Hiroshi Yamada and Morito Akiyama}, title = {Thickness Scaling and Low Voltage Operation of Ferroelectric (Al1-xScx)N Films Prepared by Sputtering Method}, booktitle = {}, year = 2022, } @inproceedings{CTT100904701, author = {Reika Ota and Shinnosuke Yasuoka and Ryoichi Mizutani and Takahisa Shiraishi and Kuniyuki Kakushima and Hiroshi Funakubo}, title = {Ferroelectricity of 20-nm Thick (Al0.8Sc0.2)N Thin Films with TiN Electrodes}, booktitle = {}, year = 2022, } @inproceedings{CTT100902980, author = {上原雅人 and 水谷涼一 and 安岡慎之介 and 清水荘雄 and 山田浩志 and 秋山守人 and 舟窪浩}, title = {Sc添加GaN薄膜の強誘電性へのSc濃度と温度の影響}, booktitle = {}, year = 2022, } @inproceedings{CTT100902550, author = {Shinnosuke Yasuoka and Ryoichi Mizutani and Reika Ota and Takahisa Shiraishi and Takao Shimizu and Masato Uehara and Hiroshi Yamada and Morito Akiyama and Hiroshi Funakubo}, title = {Establishment of Control Method for Ferroelectric Properties in (Al1-xScx)N Films}, booktitle = {}, year = 2022, } @inproceedings{CTT100874847, author = {大田怜佳 and 安岡慎之介 and 水谷涼一 and 白石貴久 and 舟窪浩}, title = {種々の電極を用いた(Al1-x,Scx)N薄膜の強誘電性評価}, booktitle = {}, year = 2022, } @inproceedings{CTT100875597, author = {安岡慎之介 and 水谷涼一 and 大田怜佳 and 白石貴久 and 清水荘雄 and 安井伸太郎 and 江原祥隆 and 西田謙 and 上原雅人 and 山田浩志 and 秋山守人 and 今井康彦 and 坂田修身 and 舟窪浩}, title = {薄膜化による(Al,Sc)N膜の結晶異方性及び強誘電特性の向上}, booktitle = {}, year = 2022, } @inproceedings{CTT100875596, author = {安岡慎之介 and 水谷涼一 and 大田怜佳 and 白石貴久 and 清水荘雄 and 上原雅人 and 山田浩志 and 秋山守人 and 舟窪浩}, title = {面内配向及び熱歪による(Al,Sc)N薄膜の強誘電特性の制御}, booktitle = {}, year = 2022, } @inproceedings{CTT100874660, author = {Ryoichi Mizutani and Shinnosuke Yasuoka and Takao Shimizu and Hiroshi Funakubo}, title = {Temperature dependence of ferroelectricity in (Al1-xScx)N thin films}, booktitle = {}, year = 2021, } @inproceedings{CTT100865364, author = {Hiroshi Funakubo and Shinnosuke Yasuoka and Ryoichi Mizutani and Takahisa Shiraishi and Akinori Tateyama and Takao Shimizu and Masato Uehara and Hiroshi Yamada and Morito Akiyama and Yoshiomi Hiranaga and Yasuo Cho}, title = {Control of Ferroelectric Property in (Al1-xScx)N Films Prepared by Sputtering Method}, booktitle = {}, year = 2021, } @inproceedings{CTT100874647, author = {安岡慎之介 and 水谷涼一 and 大田怜佳 and 白石貴久 and 清水荘雄 and 上原雅人 and 山田浩志 and 秋山守人 and 舟窪浩}, title = {強誘電体(Al1-xScx)N薄膜の結晶構造と電気特性の関係}, booktitle = {}, year = 2021, } @inproceedings{CTT100853357, author = {水谷涼一 and 安岡慎之介 and 清水荘雄 and 舟窪浩}, title = {(ScxAl1-x)N薄膜の強誘電性の温度依存性}, booktitle = {}, year = 2021, } @misc{CTT100876025, author = {舟窪 浩 and 安岡 慎之介 and 水谷 涼一 and 清水 荘雄}, title = {ウルツ鉱構造窒化物の強誘電性}, year = 2021, } @misc{CTT100908575, author = {舟窪浩 and 白石貴久 and 安岡慎之介 and 水谷涼一 and 大田怜佳 and 召田 雅実  and 楠瀬 好郎 and 上岡 義弘  and 末本 祐也  and 飯浜 準也 }, title = {窒化アルミニウムスカンジウム膜及び強誘電体素子}, howpublished = {公開特許}, year = 2023, month = {}, note = {PCT/JP2023/013181(2023/03/30), WO 2023/190869(2023/10/05)} }