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The aim of this work is to investigate the amorphous-to-crystalline phase transformation process in Ge2Sb2Te5 ternary alloys. The experiments were carried out using impedance and X-ray diffraction measurements. The results have shown that the crystallization process in an amorphous Ge2Sb2Te5 alloy starts from nuclei, which appear below Tc and which were identified as the crystalline Ge1Sb4Te7. As...
The statistical initiation and propagation characteristics of electrical trees in cross linked polyethylene cables with different voltage rating from 66 kV to 500 kV were investigated, under a constant test voltage of 50 Hz/7 kV. It was found that the characteristics of electrical trees in inner layer of 66 kV cable insulation differed greatly from that in outer layer under the same test condition;...
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