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摘要:
The maximum dielectric permittivity of Ti-doped Ta2O5 ceramics may reach 450 by a laser-sintering technique. The aim of this study is to investigate the mechanisms of the dielectric enhancement based on the unique structural and morphological properties of the laser-sintered ceramics. The reason for the dielectric enhancement is due to the crystal structure distortion in the high-temperature phase, the oriented grain growth taking place in a direction deviating from [001] in the laser-sintered ceramics. The concurrent nature of quenching effects, a sharp temperature gradient and mass transfer in liquid phase originated from laser high energy irradiation with strict directivity leads to the structural and morphological properties.
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来源 :
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
ISSN: 0947-8396
年份: 2007
期: 4
卷: 87
页码: 733-738
2 . 7 0 0
JCR@2022
ESI学科: PHYSICS;
JCR分区:1