Ultrathin Pyrolytic Carbon Films on a Magnetic Substrate
| Autor: | Umair, Ahmad, Raza, Tehseen Z., Raza, Hassan |
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| Rok vydání: | 2013 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | We report the growth of ultrathin pyrolytic carbon (PyC) films on nickel substrate by using chemical vapor deposition at 1000 {\deg}C under methane ambience. We find that the ultra-fast cooling is crucial for PyC film uniformity by controlling the segregation of carbon on nickel. We characterize the in-plane crystal size of PyC film by using Raman spectroscopy. The Raman peaks at ~1354 cm-1 and ~1584 cm-1 wavenumbers are used to extract the D and G bands. The corresponding peak intensities are then used in an excitation energy dependent equation to calculate the in-plane crystal size. Using Raman area mapping, the mean value of in-plane crystal size over an area of 100 {\mu}m ${\times}$ 100 {\mu}m is about 22.9 nm with a standard deviation of about 2.4 nm. Comment: 9 pages, 4 figures and 1 table |
| Databáze: | arXiv |
| Externí odkaz: |
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