Microstructure and microwave dielectric properties of low loss materials Li 3 (Mg 0.95 A 0.05 ) 2 NbO 6 (A = Ca 2+ , Ni 2+ , Zn 2+ , Mn 2+ ) with rock-salt structure

2016 ◽  
Vol 658 ◽  
pp. 744-748 ◽  
Author(s):  
Yonggui Zhao ◽  
Ping Zhang
Keyword(s):  
Dielectric Properties ◽  
Rock Salt ◽  
Microwave Dielectric Properties ◽  
Low Loss ◽  
Rock Salt Structure ◽  
Microwave Dielectric ◽  
Salt Structure

Structural evolution and microwave dielectric properties of a novel Li3Mg2−x/3Nb1−2x/3TixO6 system with a rock salt structure

2018 ◽  
Vol 5 (12) ◽  
pp. 3113-3125 ◽  
Author(s):  
Xing Zhang ◽  
Bin Tang ◽  
Zixuan Fang ◽  
Hongyu Yang ◽  
Zhe Xiong ◽  
...  
Keyword(s):  
Phase Transition ◽  
Dielectric Properties ◽  
Solid Solutions ◽  
Rock Salt ◽  
Structural Evolution ◽  
Microwave Dielectric Properties ◽  
Rock Salt Structure ◽  
Microwave Dielectric ◽  
Salt Structure ◽  
Subcell Structure

Phase transition from an orthorhombic superstructure to a cubic subcell structure has splendid advantages in dielectric properties of Li2O–MgO–Nb2O5–TiO2 quaternary solid solutions.

scholarly journals A novel microwave dielectric ceramic Li2NiZrO4 with rock salt structure

RSC Advances ◽  
2019 ◽  
Vol 9 (56) ◽  
pp. 32936-32939 ◽  
Author(s):  
Pengbo Jiang ◽  
Yongda Hu ◽  
Shengxiang Bao ◽  
Jie Chen ◽  
Zongzhi Duan ◽  
...  
Keyword(s):  
Rock Salt ◽  
Solid Phase ◽  
Microwave Dielectric Ceramic ◽  
Solid Phase Reaction ◽  
Phase Reaction ◽  
Low Loss ◽  
Rock Salt Structure ◽  
Dielectric Ceramic ◽  
Microwave Dielectric ◽  
Salt Structure

Low loss Li2NiZrO4 ceramics with rock salt structure were successfully prepared by the solid-phase reaction method.

Dielectric Properties of a New Ceramic System (1-x)(Mg0.95Zn0.05)2TiO4-x(Ca0.8Sr0.2)TiO3 at Microwave Frequencies

2020 ◽  
Vol 830 ◽  
pp. 37-42
Author(s):  
Shih Sheng Liu ◽  
Shiuan Ho Chang ◽  
Yuan Bin Chen
Keyword(s):  
Dielectric Properties ◽  
Microwave Dielectric Properties ◽  
Second Phase ◽  
X Ray Diffraction ◽  
Low Loss ◽  
Microwave Frequencies ◽  
Solid State Route ◽  
Microwave Dielectric ◽  
System 1 ◽  
Quality Factor Q

The microwave dielectric properties and microstructures of the (1-x)(Mg0.95Zn0.05)2TiO4-x (Ca0.8Sr0.2)TiO3 ceramics prepared using the conventional solid-state route were investigated. The structure and microstructure were analyzed by X-ray diffraction (XRD) and scanning electron microscopy (SEM), respectively. Ilmenite-structured (Mg0.95Zn0.05)TiO3 was detected as a second phase. The coexistence of the second phase, however, did not degrade the dielectric properties of the specimen because the phases were compatible. At x = 0.07, a dielectric constant (εr) of ~17.86, a quality factor (Q×f) value of ~ Q×f~133,600 Hz (at 10 GHz), and a temperature coefficient of resonant frequency (τf) of ~ –5ppm/°Cwere obtained for 0.93(Mg0.95Zn0.05)2TiO4-0.07(Ca0.8Sr0.2)TiO3 ceramic sintered at 1240°C for 4 hr. The dielectric is proposed as a candidate material for low-loss microwave and millimeter wave applications.

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