Elastomagnetoresistance of (La,Sr)MnO₃/Muscovite Heteroepitaxy
Min Yen1*, Yu-Hong Lai1, Ping-Jhih Jiang4, Ying-Hao Chu1,2,3
1Materials Science and Engineering, National Chiao Tung University, Hsinchu, Taiwan
2Electrophysics, National Chiao Tung University, Hsinchu, Taiwan
3Material and Chemical Research Laboratories, Industrial Technology Research Institute, Hsinchu, Taiwan
4Physics, National Chiao Tung University, Hsinchu, Taiwan
* Presenter:Min Yen, email:gimmy12177980@gmail.com
(La,Sr)MnO₃ (LSMO) has captured significant attentions due to its fascinating physical properties e. g.: colossal magnetoresistance at room temperature and the feature of metal-insulator phase transition. In general, these properties can be tuned by growth condition, magnetoelectric environment or stress. With the progress of materials engineering in nanoscale, most of studies are focused on LSMO thin film to investigate the coupling between stress, electrical and magnetic properties. However, because of the substrate clamping effect, there are only few researches on the exploration of stress coupling field to LSMO thin film. To overcome this challenge, flexible muscovite will be taken as the substrate to develop heteroepitaxial structure-LSMO/Muscovite, which can easily be applied stress on LSMO thin film. In this topic, the study of coupling between stress, magnetic and electrical properties on LSMO thin film will start from growing LSMO thin film on flexible muscovite substrate by laser MBE system. The corresponding physical properties will be characterized when LSMO thin film is under stress causing by mechanical bending. Furthermore, synchrotron radiation beamlines will be widely used to analyze lattice structure, electron spin state, and magnetic moment for the understanding of the whole flexible system. The results of this study cannot only show a breakthrough on fundamental science research field but also provide a new scope of flexible devices.

Keywords: heteroepitaxy, colossal magnetoresistance, muscovite, pulsed laser deposition