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立方石榴石结构的A_3B_2C_3O12陶瓷是一类结构多样、性能可调的微波材料体系,目前对该体系的研究已取得初步成果,获得了一批性能优异的陶瓷材料。A_3B_2C_3O12石榴石型陶瓷具有独特的结构特征和介电性能,本文以烧结温度为分类标准将其分为高温型和低温型,高温型主要包括Ga基石榴石型陶瓷,烧结温度一般偏高,在1500℃以上,低温型以钒酸盐为主,烧结温度低于961℃,部分陶瓷可以与Ag电极共烧应用于LTCC技术。总结了不同离子占位、离子取代和A位缺位对材料介电性能的影响,最后对钒酸盐基石榴石微波介质陶瓷的研究方向进行了展望。
Abstract：Cubic garnets with the formula of A_3B_2C_3O12 are a functional material family with structural diversity and performance tunability. Recently, rapid progress has been made on these microwave dielectric ceramics and some excellent materials have been reported. Cubic garnets have the unique structure and dielectric properties. Based on sintering temperature, cubic garnets are divided into high-temperature type and low-temperature type. The former, of which the sintering temperature is higher than 1500 ℃, mainly includes Ga-based ceramics; while the latter is mainly based on V-containing ceramics with the sintering temperature lower than 961 ℃. Most of low-temperature type ceramics could co-fire with Ag electrode, rendering potential application in LTCC technology. The effects of cation distribution, substitution and A-site cation deficiency on the dielectric properties of the ceramics are summarized. Finally, the future research direction on vanadate garnet is pointed.
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基本信息:
DOI：10.14106/j.cnki.1001-2028.2019.10.001
中图分类号:TQ174.7
引用信息:
[1]李纯纯,尹长志,肖洪祥,等.A_3B_2C_3O_(12)型石榴石结构微波介质陶瓷的研究进展[J],2019,38(10):1-6.DOI:10.14106/j.cnki.1001-2028.2019.10.001.
基金信息:
国家自然科学基金(51502047);; 广西自然科学基金(2018GXNSFAA281253)