Proceedings of the Korean Vacuum Society Conference (한국진공학회:학술대회논문집)
- 2014.02a
- /
- Pages.361.1-361.1
- /
- 2014
In-situ Growth of Epitaxial PbVO3 Thin Films under Reduction Atmosphere
- Oh, Seol Hee (Department of Physics, Ewha Womans University) ;
- Jin, Hye-Jin (Department of Physics, Ewha Womans University) ;
- Shin, Hye-Young (Department of Physics, Ewha Womans University) ;
- Shin, Ran Hee (Department of Physics, Ewha Womans University) ;
- Yoon, Seokhyun (Department of Physics, Ewha Womans University) ;
- Jo, William (Department of Physics, Ewha Womans University) ;
- Seo, Yu-Seong (Department of Physics, Pusan National University) ;
- Ahn, Jai-Seok (Department of Physics, Pusan National University)
- Published : 2014.02.10
Abstract
PbVO3 (PVO), a polar magnetic material considered as a candidate of multiferroic, has ferroelectricity along the c-axis and 2-dimensional antiferromagnetism lying in the in-plane through epitaxial growth [1,2]. PVO thin films were grown on LaAlO3 (001) substrates under reduction atmosphere from a stable Pb2V2O7 sintered target using pulsed laser deposition method. Epitaxial growth of the PVO films is possible only under Ar atmospheren with no oxygen partial pressure. X-ray diffraction was used to investigate the phase formation and texture of the films. We confirmed epitaxial growth of the PVO films with crystalline relationship of PbVO3[001]//LaAlO3[001] and PbVO3[100]//LaAlO3[100]. In addition, surface morphology of the films displays drastic changes in accordance with the growth conditions. Elongated PVO grains are related to the Pb2V2O7 pyrochlore structure. The relation between structural deformation and ferroelectricity in the PVO films was examined by local measurement of piezoresponse force microscopy.