Correlations between crystal structure and dielectric properties of high-Q materials in rock-salt structure Li2O–MgO–BO2 (B = Ti, Sn, Zr) systems at microwave frequency

RSC Advances ◽  
2016 ◽  
Vol 6 (53) ◽  
pp. 47443-47453 ◽  
Author(s):  
Haitao Wu ◽  
Eung Soo Kim
Keyword(s):  
Microwave Frequency ◽  
Dielectric Materials ◽  
Low Loss ◽  
Rock Salt Structure ◽  
Solid State Method ◽  
High Q ◽  
Microwave Dielectric ◽  
Conventional Solid State Method ◽  
Salt Structure ◽  
State Method

A series of ultra-low loss microwave dielectric materials Li2O–MgO–BO2 (B = Ti, Sn, Zr) were prepared by the conventional solid-state method.

Low Temperature Sintering and Microwave Dielectric Properties of Zinc Titanate Ceramics for LTCC Applications

2008 ◽  
Vol 368-372 ◽  
pp. 179-182
Author(s):  
Zong Chi Liu ◽  
Dong Xiang Zhou ◽  
Shu Ping Gong
Keyword(s):  
Dielectric Properties ◽  
Sintering Temperature ◽  
Microwave Dielectric Properties ◽  
Sintering Behavior ◽  
Solid State Method ◽  
Zinc Titanate ◽  
Microwave Dielectric ◽  
Conventional Solid State Method ◽  
State Method ◽  
Titanate Ceramics

The effects of CuO-MoO3 addition on the sintering behavior and microwave dielectric properties of ZnO-TiO2 ceramics were investigated. ZnO-TiO2 ceramics were prepared with conventional solid-state method and sintered at temperatures from 850 to 1050 °C. The sintering temperature of ZnO-TiO2 ceramics with CuO-MoO3 addition could be effectively reduced to 950 °C due to the liquid phase effects resulting from the additives. A proper amount of CuO-MoO3 addition could effectively improve the densification and microwave dielectric properties of ZnO-TiO2 ceramics. ZnO-TiO2 ceramics with 3 wt% addition sintered at 950 °C for 4 h exhibited better microwave dielectric properties as follows: εr of 26.8, a Q×f value of 16780 GHz at 5.42 GHz, and a τ f value of +34.7 ppm/°C.

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.

New high Q low-fired Li 2 Mg 3 TiO 6 microwave dielectric ceramics with rock salt structure

2016 ◽  
Vol 164 ◽  
pp. 436-439 ◽  
Author(s):  
Zhifen Fu ◽  
Peng Liu ◽  
Jianli Ma ◽  
Xiaoming Chen ◽  
Huaiwu Zhang
Keyword(s):  
Rock Salt ◽  
Microwave Dielectric Ceramics ◽  
Rock Salt Structure ◽  
High Q ◽  
Microwave Dielectric ◽  
Salt Structure ◽  
Dielectric Ceramics

Crystal structure and microwave dielectric characteristics of Co-substituted Zn1−xCoxZrNb2O8 (0 ≤ x ≤ 0.1) ceramics

RSC Advances ◽  
2016 ◽  
Vol 6 (90) ◽  
pp. 86889-86903 ◽  
Author(s):  
H. L. Pan ◽  
Q. Q. Liu ◽  
Y. H. Zhang ◽  
H. T. Wu
Keyword(s):  
Crystal Structure ◽  
Solid State ◽  
Solid State Method ◽  
Dielectric Characteristics ◽  
Microwave Dielectric ◽  
Conventional Solid State Method ◽  
State Method

Wolframite structure Zn1−xCoxZrNb2O8 (x = 0, 0.02, 0.04, 0.06, 0.08, 0.10) ceramics were prepared by the conventional solid state method.

Microwave Properties in BaO-TiO2 System Added by ZrO2 and WO3

2012 ◽  
Vol 512-515 ◽  
pp. 1155-1159 ◽  
Author(s):  
Xin Ye Yang ◽  
Xiao Hui Wang ◽  
An Ji ◽  
Long Tu Li
Keyword(s):  
Dielectric Properties ◽  
Dielectric Property ◽  
Solid State ◽  
Sintering Temperature ◽  
Microwave Properties ◽  
Solid State Method ◽  
Microwave Dielectric ◽  
Conventional Solid State Method ◽  
Higher Temperature ◽  
State Method

Both BaTi4O9 and Ba2Ti9O20 have the best microwave properties among many compounds in BaO-TiO2 system. The microwave performance of the ceramics in BaO-TiO2 system, which were prepared by conventional solid state method, was investigated in this paper. The study indicates that the (Ti,Zr)/Ba ratio has a great effect on the dielectric properties of the ceramic due to different BaTi4O9/Ba2Ti9O20 ratio. The pure BaTi4O9 ceramic exhibits the most outstanding microwave properties, with εr=35.55 and Q×f=43300GHz. On the contrary, the dielectric property of the pure Ba2Ti9O20 ceramic was not good enough, which should be doped with some additive additions. WO3 was incorporated into the system and the sintering temperature was adjusted to improve the microwave dielectric property. The Q×f was increased to 38000GHz by adding 1.35mol% WO3 due to the formation of a little BaWO4 phase. When sintered at a higher temperature (1380°C), the BaO-TiO2 system ceramic has εr =37.04 and Q×f =44874GHz.

scholarly journals Synthesis, structure and magnetic properties of (Eu1−xMnx)MnO3−δ

RSC Advances ◽  
2017 ◽  
Vol 7 (4) ◽  
pp. 2019-2024 ◽  
Author(s):  
Jianming Deng ◽  
Aimei Yang ◽  
M. A. Farid ◽  
Hao Zhang ◽  
Jian Li ◽  
...  
Keyword(s):  
Solid Solution ◽  
Magnetic Properties ◽  
Solid State ◽  
Solid State Method ◽  
Conventional Solid State Method ◽  
State Method

The solid solution (Eu1−xMnx)MnO3−δ (0 ≤ x ≤ 0.126) has been synthesized using a conventional solid-state method.

Characterization and optical limiting behavior of BaSnO3 powder prepared by the conventional solid state method

2020 ◽  
Vol 29 ◽  
pp. 1091-1097
Author(s):  
Jibi John ◽  
S.R. Chalana ◽  
V.P. Mahadevan Pillai ◽  
Jaison Joseph ◽  
S. Muthunatesan ◽  
...  
Keyword(s):  
Solid State ◽  
Optical Limiting ◽  
Solid State Method ◽  
Limiting Behavior ◽  
Conventional Solid State Method ◽  
State Method

Characterisation of Cation Ordering in Layered Rock-Salt LiNi1/3Mn1/3Co1/3O2 Cathode Material for Lithium Ion Batteries

2015 ◽  
Vol 819 ◽  
pp. 179-184 ◽  
Author(s):  
Tze Qing Tan ◽  
Rozana Aina Maulat Osman ◽  
Mohd Sobri Idris
Keyword(s):  
Lithium Ion ◽  
Cycling Performance ◽  
Lower Amount ◽  
Cation Ordering ◽  
Solid State Method ◽  
Layered Rock ◽  
Conventional Solid State Method ◽  
Cation Disorder ◽  
Initial Charge ◽  
State Method

The layered LiNi1/3Mn1/3Co1/3O2 ­­ that formed with the α-NaFeO2 structure were synthesised by conventional solid state method. Rietveld refinement results indicated that the amount of cation disorder (or known as interlayer mixing) affected by temperature. The samples that prepared at 950°C in oxygen possessed slightly lower amount of interlayer mixing and excellent cycling performance compared to samples that prepared at 900°C. The initial charge-discharge capacity delivered was ~204 mAh/g and ~140 mAh/g,respectively. Furthermore, the structural and electrochemical properties were quite comparable to reported in literatures.

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