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Medium-entropy microwave dielectric ceramic with garnet structure and preparation method of medium-entropy microwave dielectric ceramic
The invention relates to the technical field of dielectric ceramics, in particular to a medium-entropy microwave dielectric ceramic with a garnet structure and a preparation method of the medium-entropy microwave dielectric ceramic with the garnet structure, and the chemical composition expression of the medium-entropy microwave dielectric ceramic with the garnet structure is Ca3 (Co < 0.25 > Cu < 0.25 > Mg < 0.25 > Zn < 0.25 >) 2SiV < 2 > O < 12 >. Based on the unique effect of entropy, the medium entropy concept is introduced into the garnet structure microwave dielectric ceramic for the first time, and the Ca3 (Co0. 25Cu0. 25Mg0. 25Zn0. 25) 2SiV2O12 medium entropy microwave dielectric ceramic with the garnet structure is successfully synthesized by optimizing the sintering temperature. The dielectric constant is 8.1-10.9, the quality factor is 23490-59200GHz, and the temperature coefficient of resonance frequency is-11.2 to-9.2 ppm/DEG C. The invention further discloses a preparation method of the microwave dielectric ceramic. The medium-entropy microwave dielectric ceramic with the garnet structure has the characteristics of low dielectric constant, high quality factor and near-zero temperature coefficient of resonance frequency, and has a good application prospect in the field of millimeter wave wireless communication. Meanwhile, the method has the characteristics of simple preparation process operation, short preparation period, strong reproducibility, low material cost and the like.
本发明涉及介质陶瓷技术领域，具体涉及一种具有石榴石结构的中熵微波介质陶瓷及其制备方法，所述具有石榴石结构的中熵微波介质陶瓷的化学组成表达式为Ca3(Co0.25Cu0.25Mg0.25Zn0.25)2SiV2O12。本发明基于熵的独特效应，首次将中熵概念引入石榴石结构微波介质陶瓷中，通过优化烧结温度成功合成具有石榴石结构的Ca3(Co0.25Cu0.25Mg0.25Zn0.25)2SiV2O12中熵微波介质陶瓷。其介电常数为8.1～10.9，品质因数为23490～59200GHz，谐振频率温度系数为‑11.2～‑9.2ppm/℃。本发明的具有石榴石结构的中熵微波介质陶瓷具有低介电常数、高品质因数和近零谐振频率温度系数的特性，在毫米波无线通信领域具有良好的应用前景。同时具有制备工艺操作简单、制备周期短、复现性强和材料成本低等特点。
Medium-entropy microwave dielectric ceramic with garnet structure and preparation method of medium-entropy microwave dielectric ceramic
The invention relates to the technical field of dielectric ceramics, in particular to a medium-entropy microwave dielectric ceramic with a garnet structure and a preparation method of the medium-entropy microwave dielectric ceramic with the garnet structure, and the chemical composition expression of the medium-entropy microwave dielectric ceramic with the garnet structure is Ca3 (Co < 0.25 > Cu < 0.25 > Mg < 0.25 > Zn < 0.25 >) 2SiV < 2 > O < 12 >. Based on the unique effect of entropy, the medium entropy concept is introduced into the garnet structure microwave dielectric ceramic for the first time, and the Ca3 (Co0. 25Cu0. 25Mg0. 25Zn0. 25) 2SiV2O12 medium entropy microwave dielectric ceramic with the garnet structure is successfully synthesized by optimizing the sintering temperature. The dielectric constant is 8.1-10.9, the quality factor is 23490-59200GHz, and the temperature coefficient of resonance frequency is-11.2 to-9.2 ppm/DEG C. The invention further discloses a preparation method of the microwave dielectric ceramic. The medium-entropy microwave dielectric ceramic with the garnet structure has the characteristics of low dielectric constant, high quality factor and near-zero temperature coefficient of resonance frequency, and has a good application prospect in the field of millimeter wave wireless communication. Meanwhile, the method has the characteristics of simple preparation process operation, short preparation period, strong reproducibility, low material cost and the like.
本发明涉及介质陶瓷技术领域，具体涉及一种具有石榴石结构的中熵微波介质陶瓷及其制备方法，所述具有石榴石结构的中熵微波介质陶瓷的化学组成表达式为Ca3(Co0.25Cu0.25Mg0.25Zn0.25)2SiV2O12。本发明基于熵的独特效应，首次将中熵概念引入石榴石结构微波介质陶瓷中，通过优化烧结温度成功合成具有石榴石结构的Ca3(Co0.25Cu0.25Mg0.25Zn0.25)2SiV2O12中熵微波介质陶瓷。其介电常数为8.1～10.9，品质因数为23490～59200GHz，谐振频率温度系数为‑11.2～‑9.2ppm/℃。本发明的具有石榴石结构的中熵微波介质陶瓷具有低介电常数、高品质因数和近零谐振频率温度系数的特性，在毫米波无线通信领域具有良好的应用前景。同时具有制备工艺操作简单、制备周期短、复现性强和材料成本低等特点。
Medium-entropy microwave dielectric ceramic with garnet structure and preparation method of medium-entropy microwave dielectric ceramic
一种具有石榴石结构的中熵微波介质陶瓷及其制备方法
LI JIAMAO (Autor:in) / WANG JUNXIAN (Autor:in) / WANG ZEXING (Autor:in) / GUO YUNFENG (Autor:in) / TAO ZHENLI (Autor:in)
15.10.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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