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In particular, we are very interested in electromechanical response, including ferroelectricity, flexoelectricity, piezoelectricity, and electrochemical strain of oxide thin films. We have extensively investigated ferroelectric thin films, such as BaTiO3, Pb(Zr,Ti)O3, BiFeO3, and HfO2-based films. Using various SPM techniques (mainly, piezoresponse force microscopy (PFM)), we have studied ferroelectricity and related domain properties. We are also interested new SPM methods to study ferroelectricity, including band excitation PFM and contact-Kelvin probe force microscopy (cKPFM).
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We are also very interested in nanoscale electronic and/or ionic transport of oxide thin films. We have investigated ferroelectric thin films, solid oxide fuel cell (SOFC) materials (e.g., Sm:CeO2-SrTiO3 vertical heterostructures) and metal-insulator transition (MIT) materials (e.g., VO2). Using various SPM techniques (mainly, conductive-atomic force microscopy (cAFM)), we have studied local conduction behaviors and their underlying mechanisms.
국가
대한민국
소속기관
숙명여자대학교 (학교)
연락처
02-2077-7828 https://sangmoyang.wixsite.com/spmlab
책임자
양상모 sangmo.yang@sookmyung.ac.kr