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We have studied obliquely sputtered Co-Zr-O films. We found that oblique deposition gives rise to the formation of columnar morphology and thus higher perpendicular magnetic anisotropy in the films, which finally results in the occurrence of stripe domains and degradation of soft magnetic properties. Applying substrate bias during Co-Zr-O film deposition gave some improvement in magnetic softness...
The amount and composition of low molecular weight volatile compounds found in extruded polymeric dielectric cable insulation can influence the extent of degradation and offer valuable clues as to the nature of the polymeric degradation and the presence of various additives. Analysis of such volatile materials is, therefore, of considerable interest. The objective of this study was to analytically...
The major volatile degradation products of polyethylene exposed to partial discharges are hydrogen and carbon dioxide, with lesser amounts of carbon monoxide and methane. The effect of temperature and voltage on the composition and amounts of degradation product gases has been investigated.
The purpose of this research was to systematically evaluate the utility of thermal analysis techniques in lifetime prediction methods for electrical insulating materials. There have been studies using various separate thermal methods on electrical insulators but there appear to have been no reports where a variety of techniques were applied. Recently the terminology “total thermal analysis” has been...
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