Abstract
The piezoelectric charge coefficients d 33 of single BaTiO 3 (BT) nanoparticles (NPs) were characterized using a transmission electron microscope (TEM) that is equipped with a precise charge meter and an in-situ TEM indentation holder that enables controlled compression experiments. An exceptionally high d 33 of 1775 pC/N was obtained in NPs that are smaller than the critical diameter (D; typically known as < 100 nm) that has been regarded as the lower limit to permit for ferroelectricity in BT. The mechanical conversion efficiency of piezoelectric BT nanogenerators enhanced as D of BT NPs was decreased; this result corresponds with the single-NP compression measurements of d 33 . This quantification of the effect of D in ferroelectric materials may guide development of efficient and high-powered nanostructured piezoelectric energy devices such as piezoelectric nanogenerators.
| Original language | English |
|---|---|
| Pages (from-to) | 78-84 |
| Number of pages | 7 |
| Journal | Nano Energy |
| Volume | 58 |
| DOIs | |
| State | Published - 2019.04 |
Keywords
- Ferroelectric
- In-situ TEM
- Nanogenerator
- Piezoelectric
- Size effect
- STEM
Quacquarelli Symonds(QS) Subject Topics
- Materials Science
- Engineering - Electrical & Electronic
- Engineering - Petroleum
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