Title |
Vertically Free-Standing Ordered Pb(Zr0.52Ti0.48)O3 Nanocup Arrays by Template-Assisted Ion Beam Etching
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Published in |
Discover Nano, April 2016
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DOI | 10.1186/s11671-016-1369-x |
Pubmed ID | |
Authors |
Xiaoyan Zhang, Dan Tang, Kangrong Huang, Die Hu, Fengyuan Zhang, Xingsen Gao, Xubing Lu, Guofu Zhou, Zhang Zhang, Junming Liu |
Abstract |
In this report, vertically free-standing lead zirconate titanate Pb(Zr0.52Ti0.48)O3 (PZT) nanocup arrays with good ordering and high density (1.3 × 10(10) cm(-2)) were demonstrated. By a template-assisted ion beam etching (IBE) strategy, the PZT formed in the pore-through anodic aluminum oxide (AAO) membrane on the Pt/Si substrate was with a cup-like nanostructure. The mean diameter and height of the PZT nanocups (NCs) was about 80 and 100 nm, respectively, and the wall thickness of NCs was about 20 nm with a hole depth of about 80 nm. Uppermost, the nanocup structure with low aspect ratio realized vertically free-standing arrays when losing the mechanical support from templates, avoiding the collapse or bundling when compared to the typical nanotube arrays. X-ray diffraction (XRD) and Raman spectrum revealed that the as-prepared PZT NCs were in a perovskite phase. By the vertical piezoresponse force microscopy (VPFM) measurements, the vertically free-standing ordered ferroelectric PZT NCs showed well-defined ring-like piezoresponse phase and hysteresis loops, which indicated that the high-density PZT nanocup arrays could have potential applications in ultra-high non-volatile ferroelectric memories (NV-FRAM) or other nanoelectronic devices. |
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Geographical breakdown
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Unknown | 8 | 100% |
Demographic breakdown
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Professor > Associate Professor | 1 | 13% |
Researcher | 1 | 13% |
Unknown | 3 | 38% |
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Unknown | 3 | 38% |