Microwave dielectric properties of Li2Mg2Ga2Ti3O12 ceramics with spinel-type

被引：0

作者：

Jiang, Chang ^{[1
]}

Ma, Linzhao ^{[1
]}

Tian, Guo ^{[1
]}

Jiang, Longxiang ^{[1
]}

Xiao, Hongzhi ^{[1
]}

Du, Qianbiao ^{[1
]}

Li, Hao ^{[1
]}

机构：

[1] Hunan Univ, Coll Elect & Informat Engn, Changsha 410082, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2024年 / 50卷 / 22期

基金：

中国国家自然科学基金;

关键词：

Microwave dielectric ceramics; Spinel structure; P -V-L theory; CRYSTAL-STRUCTURE; SINTERING TEMPERATURE; BOND CHARACTERISTICS; COMPOSITE CERAMICS; PHASE EVOLUTION; BEHAVIOR; QUALITY; TAU(F); CATION; CA;

D O I：

10.1016/j.ceramint.2024.08.441

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Novel spinel-type Li2Mg2Ga2Ti3O12 ceramics were prepared by the solid-state method. Rietveld refinement revealed that the Li2Mg2Ga2Ti3O12 ceramics possess a cubic spinel structure with the Fd3m(227) space group. Raman spectrum analysis indicated that the Q x f and FWHM of ceramics exhibit an inverse relationship. According to the P-V-L theory, the Ti-O bond has the highest percentage of contribution to both of bond ionicity and lattice energy, indicating a significant impact on r pound and Q x f, respectively. The Li2Mg2Ga2Ti3O12 ceramics showed the best microwave dielectric properties (r pound = 15.72, Q x f = 69,633 GHz, and of = -20 ppm/degrees C), sintering at an optimum temperature of 1200 degrees C. Additionally, a dielectric resonance antenna, on the basis of Li2Mg2Ga2Ti3O12 ceramics was designed and simulated.

引用

页码：46002 / 46007

页数：6

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