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- W2073994268 abstract "Lanthanum monosulfide (LaS) films were grown by pulsed laser deposition on the (100) magnesium oxide (MgO) substrates at an elevated substrate temperature and in a background gas of H2S. The thin films have been characterized by x-ray diffraction (XRD), atomic force microscopy (AFM), and high resolution transmission electron microscopy. The film surface is composed of grainlike features with an average size of approximately 34nm. The root-mean-square variation of the film surface roughness measured over a 2×2μm2 area by AFM was found to be approximately 1.5nm. XRD data indicate that the average size of the nanocrystalline grains in the film is about 26nm, which is about twice the size of the grains found in LaS thin films deposited at room temperature on Si. The field emission (FE) properties of the films have been characterized by scanning anode field emission microscopy and are interpreted in terms of a recently developed patchwork FE model. The FE data indicate that there is roughly a seven times increase in emission area due to the (100) patch areas outcropping the surface for LaS∕MgO compared to LaS∕Si thin films." @default.
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- W2073994268 date "2008-03-01" @default.
- W2073994268 modified "2023-09-25" @default.
- W2073994268 title "Field emission from lanthanum monosulfide thin films grown on the (100) magnesium oxide substrates" @default.
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- W2073994268 doi "https://doi.org/10.1116/1.2837909" @default.
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