| Autor: |
Sun, Yifei, Narayanachari, K. V. L. V., Wan, Chenghao, Sun, Xing, Wang, Haiyan, Cooley, Kayla A., Mohney, Suzanne E., White, Doug, Duwel, Amy, Kats, Mikhail A., Ramanathan, Shriram |
| Předmět: |
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| Zdroj: |
Journal of Applied Physics; 2018, Vol. 123 Issue 11, p1-1, 1p, 1 Color Photograph, 1 Diagram, 2 Charts, 8 Graphs |
| Abstrakt: |
We present a study of co-sputtered VO2-SiO2 nanocomposite dielectric thin-film media possessing continuous temperature tunability of the dielectric constant. The smooth thermal tunability is a result of the insulator-metal transition in the VO2 inclusions dispersed within an insulating matrix. We present a detailed comparison of the dielectric characteristics of this nanocomposite with those of a VO2 control layer and of VO2/SiO2 laminate multilayers of comparable overall thickness. We demonstrated a nanocomposite capacitor that has a thermal capacitance tunability of ∼60% between 25 °C and 100 °C at 1 MHz, with low leakage current. Such thermally tunable capacitors could find potential use in applications such as sensing, thermal cloaks, and phase-change energy storage devices. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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