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- Title
Improved electrical properties of sputtering Pb1.10(Zr0.52,Ti0.48)O3/Pb1.25(Zr0.52,Ti0.48)O3 multilayer thin films.
- Authors
Li, Biao; Wang, Xing; Li, Kehong; Wan, Yingze; Zhang, Shuai; Yang, Zhifeng; Meng, Lingfeng; Zou, Helin
- Abstract
Multilayer PZT thin films composed of Pb1.10(Zr0.52,Ti0.48)O3 and Pb1.25(Zr0.52,Ti0.48)O3 films were deposited on Pt(111)/Ti/SiO2/Si(100) substrate coated by Pb1.10(Zr0.52,Ti0.48)O3 buffer layer using RF magnetron sputtering. The effect of variation of layer numbers of Pb1.10(Zr0.52,Ti0.48)O3 and Pb1.25(Zr0.52,Ti0.48)O3 thin films in multilayer PZT films was investigated. X-ray diffraction (XRD) analysis indicates all PZT films possess pure perovskite phase and (111) preferred orientation. For multilayer thin films, dense perovskite microstructures without obvious defects were observed using scanning electron microscope (SEM). Optimal dielectric properties with a εr of 1092 and a tanδ of 0.04 at 1 kHz were obtained in the PZT film with the maximum layer numbers (8-layer film, namely L-8). Well-saturated P–E was observed in L-8 film by a standard ferroelectric test system (Pr = 26.1 µC/cm2, Ec = 60.1 kV/cm). Moreover, a Lower leakage current density (J = 5.49 × 10−6 A/cm2 at 117 kV) was achieved in sample L-8.
- Subjects
THIN films; MULTILAYERED thin films; MAGNETRON sputtering; SCANNING electron microscopes; RADIOFREQUENCY sputtering; BUFFER layers
- Publication
Journal of Materials Science: Materials in Electronics, 2020, Vol 31, Issue 23, p21661
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-020-04679-8