Effects of BaCu(B2O5) additives on the crystal structures and dielectric properties of CaMgGeO4 ceramics for LTCC applications,CrystEngComm

当前位置： X-MOL 学术 › CrystEngComm › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Effects of BaCu(B2O5) additives on the crystal structures and dielectric properties of CaMgGeO4 ceramics for LTCC applications
CrystEngComm ( IF 2.6 ) Pub Date : 2020-06-16 , DOI: 10.1039/d0ce00620c
En-Cai Xiao _{1,

2,

3,

4} , Feng Shi _{1,

2,

3,

4,

5} , Guangen Fu _{1,

2,

3,

4} , Qi Ren _{2,

3,

4,

6} , Gang Dou _{2,

3,

4,

6} , Wen Lei _{7,

8,

9,

10,

11} , Ze-Ming Qi _{4,

12,

13,

14}

Affiliation

School of Material Science & Engineering
Shandong University of Science and Technology
Qingdao
P. R. China
Key Laboratory of Processing and Testing Technology of Glass & Functional Ceramics of Shandong Province
College of Electrical Engineering and Automation
School of Optical and Electronic Information
Key Lab of Functional Materials for Electronic Information (B)
Ministry of Education
Huazhong University of Science and Technology
Wuhan
National Synchrotron Radiation Laboratory
University of Science and Technology of China
Hefei

A CaMgGeO₄ (CMG) ceramic with an olivine structure was fabricated by the traditional solid-phase reaction method; this material was dense at 1300 °C/6 h and exhibited excellent dielectric properties (ε_r = 6.83, Q × f = 125 432, f = 14.9 GHz). The effects of BaCu(B₂O₅) (BCB) on the sintering characteristics, crystal structures and microwave dielectric properties of CMG systems were studied. BCB can effectively reduce the sintering temperature (T_s) of the CMG ceramic, and when the amount of BCB is 16 wt%, the T_s can be lowered to 875 °C. The CMG ceramic containing 8 wt% BCB shows excellent dielectric properties (ε_r = 7.01, Q × f = 73 962, f = 14.8 GHz) at 940 °C/6 h. Raman mode 11 moves to a lower wavenumber with increasing BCB content, while the BCB content has the opposite effect on the dielectric constant; however, the full width at half-maximum (FWHM) value of mode 11 correlates negatively with the Q × f values. In addition, the change in the packing fraction is similar to that in the Q × f values with increasing BCB content. A decrease in the packing fraction means an increase in the vibrational space and possibly non-resonance, which in turn reduces the Q × f value. In addition, the ceramic has good chemical compatibility with the Ag electrode, indicating broad application prospects in low-temperature co-fired ceramics (LTCCs) for CMG.

中文翻译：

BaCu（B2O5）添加剂对LTCC应用中CaMgGeO4陶瓷的晶体结构和介电性能的影响

采用传统的固相反应方法制备了橄榄石结构的CaMgGeO ₄（CMG）陶瓷。此材料是致密的，在1300℃/ 6小时，并表现出优异的介电特性（ε _{- [R} = 6.83，Q × ˚F = 125 432，˚F = 14.9千兆赫）。研究了BaCu（B ₂ O ₅）（BCB）对CMG体系的烧结特性，晶体结构和微波介电性能的影响。BCB可以有效降低CMG陶瓷的烧结温度（T _s），当BCB的含量为16 wt％时，T _s可以降低到875°C。的CMG陶瓷包含8wt％BCB表现出优异的介电特性（ε _{- [R} = 7.01，Q × ˚F = 73 962，˚F在940℃/ 6小时14.8 =千兆赫）。随着BCB含量的增加，拉曼模式11移至较低的波数，而BCB含量对介电常数的影响却相反。但是，模式11的半高全宽（FWHM）值与Q × f值负相关。另外，填充分数的变化与Q × f的变化相似BCB含量增加时的值。填充分数的降低意味着振动空间的增加，并可能导致非共振，从而降低了Q × f值。此外，该陶瓷与Ag电极具有良好的化学相容性，表明在CMG的低温共烧陶瓷（LTCC）中具有广阔的应用前景。

更新日期：2020-07-20

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11