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High-purity W single crystals have been grown by the electron-beam floating zone melting technique. The structural quality of these crystals was subsequently improved by the application of a strain-annealing technique. X-ray diffraction methods revealed a near-perfect crystallographic structure. Well-ordered clean W surfaces free from all contaminants were obtained by a two-step heating procedure...
High-purity tungsten (W) single crystals have been prepared by the electron-beam floating zone melting technique. The structural quality of these crystals was subsequently improved by the application of a strain-annealing technique. X-ray diffraction methods revealed the near-perfect crystallographic structure, and confirmed the absence of first- and second-order subgrains. The observation of the...
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