title: Heteroepitaxy of Fe3O4/Muscovite: A New Perspective for Flexible Spintronics.
abstract: Spintronics has captured a lot of attention since it was proposed. It has been triggering numerous research groups to make their efforts on pursuing spin-related electronic devices. Recently, flexible and wearable devices are in a high demand due to their outstanding potential in practical applications. In order to introduce spintronics into the realm of flexible devices, we demonstrate that it is feasible to grow epitaxial Fe3O4film, a promising candidate for realizing spintronic devices based on tunneling magnetoresistance, on flexible muscovite. In this study, the heteroepitaxy of Fe3O4/muscovite is characterized by X-ray diffraction, high-resolution transmission electron microscopy, and Raman spectroscopy. The chemical composition and magnetic feature are investigated by a combination of X-ray photoelectron spectroscopy and X-ray magnetic circular dichroism. The electrical and magnetic properties are examined to show the preservation of the primitive properties of Fe3O4. Furthermore, various bending tests are performed to show the tunability of functionalities and to confirm that the heterostructures retain the physical properties under repeated cycles. These results illustrate that the Fe3O4/muscovite heterostructure can be a potential candidate for the applications in flexible spintronics.
authors.affiliation: Max Planck Institute for Chemical Physics of Solids , Noethnitzerstrasse 40, 01187 Dresden, Germany.|Department of Materials Science and Engineering, National Chiao Tung University , Hsinchu 30010, Taiwan.
authors.forename: Ping-Chun
authors.initials: PC
authors.lastname: Wu
authors.affiliation: Institute of Physics, Academia Sinica, Taipei 11529, Taiwan.
authors.forename: Ping-Fan
authors.initials: PF
authors.lastname: Chen
authors.affiliation: Institute of Physics, Academia Sinica, Taipei 11529, Taiwan.
authors.forename: Thi Hien
authors.initials: TH
authors.lastname: Do
authors.affiliation: Department of Materials Science and Engineering, National Chiao Tung University , Hsinchu 30010, Taiwan.|Institut fur Angewandte Photophysik, Technische Universitat Dresden , George-Bahr-Strasse 1, 01069 Dresden, Germany.
authors.forename: Ying-Hui
authors.initials: YH
authors.lastname: Hsieh
authors.affiliation: Department of Electrical Engineering, National Tsing Hua University , Hsinchu 30013, Taiwan.
authors.forename: Chun-Hao
authors.initials: CH
authors.lastname: Ma
authors.affiliation: Department of Electrophysics, National Chiao Tung University , Hsinchu 30010, Taiwan.
authors.forename: Thai Duy
authors.initials: TD
authors.lastname: Ha
authors.affiliation: Department of Physics, National Cheng Kung University , Tainan City 701, Taiwan.
authors.forename: Kun-Hong
authors.initials: KH
authors.lastname: Wu
authors.affiliation: Department of Physics, Tsinghua University , Beijing 100084, China.
authors.forename: Yu-Jia
authors.initials: YJ
authors.lastname: Wang
authors.affiliation: Department of Physics, Tsinghua University , Beijing 100084, China.
authors.forename: Hao-Bo
authors.initials: HB
authors.lastname: Li
authors.affiliation: Department of Physics, National Cheng Kung University , Tainan City 701, Taiwan.
authors.forename: Yi-Chun
authors.initials: YC
authors.lastname: Chen
authors.affiliation: Department of Electrophysics, National Chiao Tung University , Hsinchu 30010, Taiwan.
authors.forename: Jenh-Yih
authors.initials: JY
authors.lastname: Juang
authors.affiliation: Department of Physics, Tsinghua University , Beijing 100084, China.
authors.forename: Pu
authors.initials: P
authors.lastname: Yu
authors.affiliation: Institut fur Angewandte Photophysik, Technische Universitat Dresden , George-Bahr-Strasse 1, 01069 Dresden, Germany.
authors.forename: Lukas M
authors.initials: LM
authors.lastname: Eng
authors.affiliation: Max Planck Institute for Chemical Physics of Solids , Noethnitzerstrasse 40, 01187 Dresden, Germany.
authors.forename: Chun-Fu
authors.initials: CF
authors.lastname: Chang
authors.affiliation: Department of Electrical Engineering, National Tsing Hua University , Hsinchu 30013, Taiwan.
authors.forename: Po-Wen
authors.initials: PW
authors.lastname: Chiu
authors.affiliation: Max Planck Institute for Chemical Physics of Solids , Noethnitzerstrasse 40, 01187 Dresden, Germany.
authors.forename: Liu Hao
authors.initials: LH
authors.lastname: Tjeng
authors.affiliation: Department of Materials Science and Engineering, National Chiao Tung University , Hsinchu 30010, Taiwan.|Institute of Physics, Academia Sinica, Taipei 11529, Taiwan.|Department of Electrophysics, National Chiao Tung University , Hsinchu 30010, Taiwan.
authors.forename: Ying-Hao
authors.initials: YH
authors.lastname: Chu
keywords: flexible electronics; heteroepitaxy; magnetite; muscovite; spintronics