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Article
High Throughput X-ray Diffractometer for Combinatorial Epitaxial Thin Films
We report on the development of a high throughput x-ray diffractometer that concurrently measures spatially resolved x-ray diffraction (XRD) spectra of epitaxial thin films integrated on a substrate. A converg...
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Article
Control of the Polarity and Surface Morphology of GaN Films Deposited on C-Plane Sapphire
Control of the polarity of GaN films deposited by metalorganic chemical vapor deposition was achieved by substrate nitridation and subsequent annealing of a buffer layer. The surface morphology and optical pro...
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Article
Control of the Polarity and Surface Morphology of GaN Films Deposited on C-Plane Sapphire
Control of the polarity of GaN films deposited by metalorganic chemical vapor deposition was achieved by substrate nitridation and subsequent annealing of a buffer layer. The surface morphology and optical pro...
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Article
Oxide Quantum Structures for Future Electro-Photonics
We show our recent development on the epitaxial growth of oxide thin films by laser molecular beam epitaxy directed towards a possible new field of electro-photonics based on metal-oxide quantum structures. Ex...
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Article
Transmission Electron Microscopy Study of Room Temperature Lasing Epitaxial ZnO Films on Sapphire
We have studied the microstructures of lasing and non-lasing ZnO films on sapphire in plan-view and cross-section by transmission electron microscopy (TEM). While ZnO films in general are made up of cloumnar c...
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Article
Materials Aspects of Oxide Superconductors - Effect of Ambient Water on Superconductivity-
It has been found that the chemical instability of Ba2LnCu3O7 causes some problems in the measurements of critical temperature and creates a highly resistive grain boundary contact which is the major cause of the...