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Zn0.9Mg0.1O nanogranular thin films with a thickness of 250nm were deposited by sol–gel spin coating process on ITO and glass substrates. Their morphology and microstructure were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray Photoelectron Spectroscopy (XPS) and atomic force microscopy (AFM). The surface was dominated by zinc oxide and magnesium carbonates. The...
With all-optical means, the nuclear spin coherence lifetime is measured for the first time in a crystal doped with low-concentration thulium. A novel Raman echo scheme is demonstrated. The hyperfine splitting is varied over a 15MHz-wide range with the help of an external magnetic field. Over this range the spin coherence lifetime remains close to 350μs in the electronic ground state. Thulium-doped...
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