Acknowledgments This work was supported by Cheng WANG, Hanae AOKI, Yang CAO, Nobukiyo KOBAYASHI, and Shigehiro OHNUMA. References [1] N. Kobayashi, et al, Nat. Commun. 5, 4417 (2014). Hiroshi MASUMOTO ―114―本章に本研究所を本務とする教員の研究成果概要、および令和3年度に終了した公募研究課題の研究成果概要をまとめる。なお、本報告書作成時に転出している教員については、掲載されていない場合がある。(Advanced Interdisciplinary Research Division/Materials and Energy Platform, FRIS) Since the Tunneling Magneto-Dielectric (TMD) effect has been discovered in Co-Fe-Mg-F nano-granular thin films at room temperature by our group in 2014[1], the footsteps to pursue other material systems have never halted. In order to achieve greater TMD response, this year, I have synthesized Co-Sr-F nano-granular thin films doped by Gd, and Pd, and investigated their properties. Co-Sr-F, Co-Gd-Sr-F and Co-Pd-Sr-F thin films show superparamagnetic. TMD responses are obviously improved by Gd doping, but diminished by Pd doping. And the TMD peak frequency positions both shifted to higher nano-granules contents by Gd doping and Pd doping. This study confirms the feasibility of doping to achieve TMD response of about 20% improvement by Gd doping. ８．令和3年度研究成果概要８．令和3年度研究成果概要 8.1 先端学際基幹研究部 Doping effect on tunneling magneto-dielectric response of Co-Sr-F nano-granular films ８．１ 先端学際基幹研究部
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