共搜索到254条信息，每页显示10条信息，共26页。用时：0小时0分0秒440毫秒

• (1-y)Ba(Zr_0.1Ti_0.9)O₃-yBa(Zn_1/3Nb_2/3)O₃陶瓷的介电性能及弛豫铁电行为

  来源： 《中国有色金属学报(英文版)2020年第3期》——钟鑫 张晨 陈方旭 唐柱明 简刚

  increases up to 0.05 and their average grain size decreases with the increase of y. The permittivity maximum εr,max is suppressed from 8948 to 1611 at 1 kHz with increasing y, and the ferroelectric... ferroelectric behavior with a strong frequency dispersion of Tm and permittivity at Tm accompanied by a strong diffuse phase transition is found for the system with high y value. The remnant polarization......

• Preparation and Characterization of W-Type Hexaferrite Doped with La3+

  来源： 《JOURNAL OF RARE EARTHS2007年第5期》——Gan Shucai Yuan Lanying Zou Haifeng Meng Jian Li Hongying Hong Guangyan Xu Jijing

  were examined by XRD, DTA-TG and XPS, and the microwave-absorbing properties were investigated by evaluating the permeability and permittivity of materials (μr, εr). The results showed that the phase......

• Study on BSTO/MgO Ferroelectric Materials for Phase Shift Doped with Rare Earth Oxides

  来源： 《JOURNAL OF RARE EARTHS2005年第5期》——Liu Min Zhou Hongqing Wu Hongzhong Yang Chunxia

  synthesis. The effects of various rare earth oxides of 0.5% on dielectric behaviors of BSTO/MgO composites were studied in terms of permittivity, loss tangent and tunability both at low and high......

• Effect of MoSi₂ content on dielectric and mechanical properties of MoSi₂/Al₂O₃ composite coatings

  来源： 《中国有色金属学报(英文版)2012年第1期》——武志红 周万城 罗发 朱冬梅

  , respectively. The dielectric loss tangent increases with increasing MoSi2 content, and the real part of permittivity decreases conversely over the frequency range of 8.2-12.4 GHz. These effects are due... density (3.7 g/cm3). As the typical representative of low dielectric permittivity microwave dielectric ceramic, Al2O3 has perfect dielectric permittivity property, especially its low dielectric loss......

• Electrical properties of HfTiO Gate Dielectric Ge MOS capacitors with wet-No surface pretreatment

  来源： 《功能材料与器件学报2009年第6期》——ZOU Xiao XU Jing-ping

  permittivity of~35.interface-state density of 2.1×10~(11)eV~(-1)cm~(-2),equivalent oxide charge of -1.96×10~(12)cm~(-2) and gate leakage current of 2.71×10~(-4)A/cm~2 at V_g=1 V.Experimental results also......

• An impregnation-reduction method to prepare graphite nanosheet/alumina composites and its high-frequency dielectric properties

  来源： 《Rare Metals2017年第3期》——Ke-Lan Yan Run-Hua Fan Min Chen Kai Sun Xu-Ai Wang Qing Hou Shi-Bing Pan Ming-Xun Yu

  of 0.01-1.00 GHz by impedance analyzer.The results show that the real part of permittivity of composites increases with Fe3+ concentration,which is due to the increase in interfacial polarization......

• Effects of NH₃ annealing on interface and electrical properties of Gd-doped HfO₂/Si stack

  来源： 《Journal of Rare Earths2013年第4期》——杨萌萌 屠海令 杜军 魏峰 熊玉华 赵鸿斌

  without RTA was 2×10-3 A/cm2.After NH3 annealing,the leakage current density was about one order of magnitude lower(3.9×10-4A/cm2).The effective permittivity extracted from the C-V curves was~14.1......

• Microwave absorption properties of SiC@SiO₂@Fe₃O₄ hybrids in the 2–18 GHz range

  来源： 《International Journal of Minerals Metallurgy and Materials2017年第7期》——Peng Zhou Jun-hong Chen Meng Liu Peng Jiang Bin Li Xin-mei Hou

  of-39.58 d B at 12.24 GHz. With respect to the enhanced microwave absorption mechanism, the Fe3O4 nanoparticles coated on SiC@SiO2 nanowires are proposed to balance the permeability and permittivity......

• Dielectric properties of spark plasma sintering AlN-W composite ceramics

  来源： 《Rare Metals2011年第6期》——WANG Jiangyuana,JIA Xiana,c,JIA Chengchanga,DONG Guixiab,ZHANG Yulia,and JIA Leia a School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing ,China b School of Materials Science and Engineering,Hebei United University,Tangshan ,China c Journals Publishing Center,University of Science and Technology Beijing,Beijing ,China

  were prepared by spark plasma sintering.The effects of manufacture parameters on dielectric loss tangent and permittivity constant were investigated,which include powder-mixed method,milling time......

• Structure and magnetic properties of Fe-based powders prepared by mechanical alloying

  来源： 《Acta Metallurgica Sinica2010年第5期》——Tingdong ZHOU ,), Zhengyun WANG ), Jiangkang TANG ) and Haipeng LU ) ) Key Laboratory of Special Material and Preparing Technology, Xihua University, Chengdu , China ) State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu , China

  morphology was studied by SEM. Microstructure of powders milled for various times were analyzed by XRD. The complex permittivity and complex permeability of four powders were tested in the frequency range......