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temperature and 200 kHz. The dielectric properties change significantly with applied dc bias, and the graded thin film show high tunability of 42.3% at an applied field of 250 kV/cm. All the results...; dielectric constant; tunability 1 Introduction Thin films of perovskite-type titanates, such as BaTiO3 and BaxSr1-xTiO3 (BST), are used widely on a variety of integrated devices, such as dynamic random......
Tunability of the mechanical properties of(Fe50Mn27Ni10Cr13)100-xMox high-entropy alloys via secondary phase controlRaymond Kwesi Nutor1,Q.P.Cao1,X.D.Wang1,D.X.Zhang1,2,J.Z.Jiang11. International... strength at maintained ductility compared to its cast counterpart.This work provides insight into the tunability of the mechanical properties of non-equiatomic HEAs via alloying and thermomechanical......
Complete Composition Tunability of Cu(Ni)-Ti-Zr Alloys for Bulk Metallic Glass FormationZe-xiu Zhang, Chun-li Dai and Jian Xu Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China摘 要:In the Cu-Zr-Ti ternary system, a new composition zone of bulk metallic......
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... increases the tunability of BSTO/MgO system, from 13.6% to 14.8%. For the La2O3 doped sample, the value of tunability is more than 14% with the external DC field 4000 V*mm-1 and the microwave loss at 2.47......
YF_3掺杂对Ba_0.6Sr_0.4TiO_3介电可调性的影响 赵玉珍1,刘珊珊1,王希林1,周和平1 (1.清华大学,新型陶瓷与精细工艺国家重点实验室,北京,100084) 摘要:采用传统工艺制备了YF_3掺杂的Ba_0.6Sr_0.4TiO_3陶瓷材料,研究了YF_3掺杂比例对钛酸锶钡材料结构及介电性能的影响.结果表明:烧结后得到的BSTO材料具有典型的钙钛矿结构;YF_3掺杂具有降低Ba_0.6Sr_0.4TiO_3材料的介电常数,细化陶瓷晶粒和提高介电常数温度稳定性的作用.在氟化钇掺杂比例1%时介电常数降至1887(100 kHz),介电可调性达到30%(1.5 kV/mm)以上, 各掺杂比例的钛酸锶钡材料的介电损耗均在1%以下. 关键词:钛酸锶钡; 氟化钇; 介电可调性; BSTO; YF_3; tunability; [全文内容正在添加中] ......
ceramics have di?usion phase transformation characteristics. For 5 wt% B2O3-Li2O glasses doped Ba0.55Sr0.45TiO3 composites, the tunability is 15.4% under a dc-applied electric field of 30 kV/cm at 10 kHz... tunability and high Q value are promising candidates for multilayer low-temperature co-fired ceramics (LTCC) and potential microwave tunable devices applications.关键词:......
with decreasing (Ba+Sr)/Ti ratio. The tunability increases with decreasing ratio from 1.33 to 1.05, and then decreases with decreasing ratio from 1.05 to 0.76. The film with (Ba+Sr)/Ti ratio of 1.05 has a maximum tunability of 32% and a dissipation factor of 0.03 at 1 MHz. Key words: Ba0.6Sr0.4TiO3 thin film; (Ba+Sr)/Ti ratio; sol-gel method; dielectric properties 1 Introduction Barium......
to this challenge are as follows:(1) purification,(2) alloying,(3) surface modification, and(4) biodegradable magnesium-matrix composites(BMMCs) synthesis. Owing to the tunability of mechanical properties......
magnetoelastic coupling, where the lattice degrees of freedom and spin degrees of freedom are efficiently coupled. The tunability of the phase transition, in terms of the critical temperature......
is ascribed to be a dipoledipole interaction. By virtue of the ET behavior and increasing Sm3+ ion concentration, the enhancing emission intensity of Sm3+ and the tunability of emission color from yellowish......