Abstract

The influence of the concentration and position of scandium ions on the thermophysical characteristics of optical ceramics based on Y₂O₃–Er₂O₃–Sc₂O₃–Al₂O₃ oxide garnet solid solution has been studied. An increase in the total scandium concentration leads to a decrease in the thermal conductivity in the ceramics. The thermal conductivity has been determined as a function of the concentration and position of scandium ions in the garnet lattice. The decreased thermal conductivity of yttrium erbium scandium aluminum garnet (YErSAG) ceramics is due to structural disordering associated with partial substitution of cations in the six- and eight-coordinate positions in the garnet lattice.

中文翻译：

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Y2O3-Sc2O3-Al2O3-Er2O3 氧化物组合物中钪浓度对光学陶瓷热物理性能的影响

摘要

研究了钪离子的浓度和位置对Y ₂ O ₃ -Er ₂ O ₃ -Sc ₂ O ₃ -Al ₂ O _{3氧化物石榴石固溶体光学陶瓷热物理特性的影响。}总钪浓度的增加导致陶瓷的导热率降低。热导率已确定为石榴石晶格中钪离子浓度和位置的函数。钇铒钪铝石榴石（YErSAG）陶瓷的热导率降低是由于石榴石晶格中六配位和八配位位置的阳离子部分取代引起的结构无序所致。