Pulsed laser deposition of Pb(Zr0.52Ti0.48)O3 thin film on cobalt ferrite nano-seed layered Pt(111)/Si substrate: effect of oxygen pressure |
| |
| Authors: | M Khodaei SA Seyyed Ebrahimi Yong Jun Park Seungwoo Song Hyun Myung Jang Junwoo Son |
| |
| Institution: | 1. Center of Excellence for Magnetic Materials, School of Metallurgy and Materials, University of Tehran, Tehran, Iran;2. Department of Materials Science &3. Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Koreakhodaei@ut.ac.ir;5. Pohang Accelerator Laboratory, Pohang University of Science and Technology (POSTECH), Pohang, Korea;6. Division of Advanced Materials Science (AMS) and Department of Materials Science &7. Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Korea;8. Department of Materials Science & |
| |
| Abstract: | The effect of oxygen pressure during pulsed laser deposition of Pb(Zr0.52Ti0.48)O3 (PZT) thin films on CoFe2O4 nano-seed layered Pt(111)/Si substrate was investigated. The PZT film deposited at oxygen pressure lower than 25 mTorr is identified as both perovskite and pyrochlore phases and the films deposited at high oxygen pressure (50-100 mTorr) show the single-phase perovskite PZT that has a perfect (111)-orientation. In addition, the film deposited at PO2 of 50 mTorr has a uniform surface morphology, whereas the film deposited at PO2 of 100 mTorr has a non-uniform surface morphology and more incompacted columnar cross-section microstructure. The polarization of film deposited at 100 mTorr is higher than that deposited at 50 mTorr, but shift of the hysteresis loop along the electrical field axis in the film deposited at PO2 of 100 mTorr is larger than that of the film deposited at PO2 of 50 mTorr. |
| |
| Keywords: | PZT (111)-orientation thin film CoFe2O4 oxygen pressure pulsed laser deposition |
|
|
