据悉,华中科技大学光学与电子信息学院、电子信息功能材料教育部重点实验室吕文中教授团队利用因泰莱激光的CeraBuilder100陶瓷激光3D打印机打印近零热膨胀Ba1-xSrxZn2Si2O7基微波介电陶瓷谐振器天线与集成透镜,在温度稳定的卫星通信中具有潜在的应用前景,该微波介电材料在高频通讯、5G领域也有着非常好的应用前景。该成果...
The crystal structure was determined with single crystal X-ray diffraction using the composition Ba0.6Sr0.4Zn2Si2O7, which crystallizes in the orthorhombic space group Cmcm. The negative thermal expansion is a result of motions and distortions inside the crystal lattice, especially inside the chains...
Ba0.4Sr0.6Zn2Si2O7 with negative coefficient of thermal expansion (CTE), which originates from the stretched [ZnO4] tetrahedral chain to the twisted one along b-axis with temperature, and CaTiO3 with positive temperature coefficient of resonant frequency (tau(f)) can effectively adjust both ...
采用传统的固相烧结法制备(Ba1-xSrx)(Zn1/3Nb2/3)O3微波介质陶瓷,利用XRD研究该系统的有序-无序结构。系统随Sr2+取代量的增加,晶体结构逐渐由无序立方相转变为有序的赝立方相(高角度衍射峰展宽),晶体对称性下降,晶格常数降低,衍射峰向高角度偏移。系统中生成了1∶2和1∶1超晶格,表明有序-无序相转变...
In the system BaO-SrO-ZnO-SiO2, recently a new phase based on Ba1−xSrxZn2Si2O7solid solutions was found, which exhibits unexpected low and highly anisotropic thermal expansion, which can be used for an adjustment of the thermal expansion properties. In the case of sealing materials for ...
1.(Ba1-xSrx)(Zn1/3Nb2/3)O3微波介质陶瓷温度系数的异常 石锋 ,孙玮 - 功能材料 - 2007第A02期 2.(Na1/2Bi1/2)TiO3-(Na1/2Bi1/2)(Zn1/3)Nb2/3)O3无铅压电陶瓷的介电特性研究 杨桂华 ,周昌荣 ,刘心宇 - 人工晶体学报 - 2008第2期 3.溶胶-凝胶法制备Ba(Zn1/3Nb2/3)O3微波介质陶...
(Ba1-xSrx)(Zn1／3Nb2／3)O3固溶体系统第二相的研究 维普资讯 http://www.cqvip.com
Far-IR reflectance study has been done on B-site disordered (Ba1−xSrx)(Zn1/3Ta2/3)O3 dielectric resonators as a function of tolerance factor (t) for x=0.0,0.3,0.5,0.7,1.0. Five distinct modes were observed. Two-mode behavior due to the presence of two different ions in B-site ...
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