Microwave dielectric properties of Nd:YAG transparent ceramics
Microwave dielectric properties of Nd:YAG transparent ceramics
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DOI：
10.1007/s10854-016-5041-0
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发表时间：
2016-06
期刊：
影响因子：
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通讯作者：
Shengquan Yu;Wei Jing;Wenlong Yin;Mingjin Tang;Tao Xu;Bin Kang
中科院分区：
文献类型：
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作者：
Shengquan Yu;Wei Jing;Wenlong Yin;Mingjin Tang;Tao Xu;Bin Kang
为了研究Nd：YAG透明陶瓷的微波介电性能，采用高纯原料，采用传统固相反应技术制备样品。样品在真空度≤1 × 10− 3 Pa下于1660-1840 °C烧结8h。在1780 °C烧结的Nd：YAG陶瓷具有纯立方相组成和非常致密的显微结构，相对密度为99.85%，因此具有无气孔的显微结构和高度的透明性。由于纯相组成和致密的显微结构，Nd：YAG透明陶瓷具有优异的微波介电性能：ε r= 10.66，Q ×f= 2，30，400 GHz，τf= −27 ppm/°C。高Q × f值和低介电常数表明Nd：YAG透明陶瓷是一种很有前途的微波、毫米波电子器件介质基片材料。
In order to investigate the microwave dielectric properties of Nd:YAG transparent ceramics, the high pure raw materials were used for the preparation of samples by the conventional solid-state reaction technique. The samples were sintered at 1660–1840 °C for 8 h in the vacuum atmosphere ≤1 × 10−3Pa. Nd:YAG ceramics sintered at 1780 °C had the pure cubic YAG phase composition and very dense microstructure with the relative density 99.85 %, so they had the pore-free microstructure and were highly transparent. Because of the pure phase composition and dense microstructure, Nd:YAG transparent ceramics had the outstanding microwave dielectric properties:ɛr= 10.66,Q×f= 2,30,400 GHz andτf= −27 ppm/°C. The highQ×fvalue and low dielectric constantɛrsuggested that Nd:YAG transparent ceramics were kind of promising dielectric substrate materials in microwave and millimeter wave electronic devices.