Abstract:
A ceramic composition comprising a binary system solid solution represented by the formulae: (1-x) (Sr 1-y Bi y )TiO 3 + x (Na 0.5 Bi 0.5 )TiO 3 and (1-x) (Sr 1-1.5y Bi y )TiO 3 + x (Na 0.5 Bi 0.5 )TiO 3 , wherein 0
Abstract translation:一种陶瓷组合物,其包含由式(1-x) + x(Na 0.5 Bi Bi 0.5)TiO 3和(1-x)(Sr <1.5-1.5y Sub> Bi y sub>)TiO 3 sub> + x(na 0.5 sub 0.5 sub>)TiO 3 sub> 其中0
Abstract:
A ceramic composition comprising a binary system solid solution represented by the formulae: (1-x) (Sr 1-y Bi y )TiO 3 + x (Na 0.5 Bi 0.5 )TiO 3 and (1-x) (Sr 1-1.5y Bi y )TiO 3 + x (Na 0.5 Bi 0.5 )TiO 3 , wherein 0
Abstract translation:一种陶瓷组合物,其包含由下列通式表示的二元体系固溶体:(1-x)(Sr 1-y)Bi 3 Y 3 + x(Na <0.5> Bi 0.5)TiO 3和(1-x)(Sr 1-1.5y) TiO 2 3 + x(Na + 0.5 u> H 2 O 3)TiO 3 ,其中0
Abstract translation:含有至少Sr,Ln(Ln是镧系元素),Bi,Ti和O的压电陶瓷,包括含有作为主要组分的含有Bi 2 Ti 4 O 4 O 15晶体的铋层状化合物的陶瓷颗粒(M II) 由Sr和Ln组成的元素)和作为次要组分的氧化锰。 通过弦长测定法测定的陶瓷粒子的平均粒径为0.8〜4.7μm。 还公开了一种包括该压电陶瓷作为压电体的压电装置。 压电陶瓷在厚度纵向振动的三次谐波模式中表现出高Qmax,特别是在较高频带(例如16至65MHz)中,并且诸如谐振器的压电器件具有压电陶瓷作为压电体。
Abstract:
Disclosed herein are the layered perovskites materials having magnetoelectric effects originated from large magnetic moment and ferroelectricity over room temperature. The layered perovskites material is represented by Formula 1 or 2 below: Bi4-xRxTi3O12 (1) Bi4-xRxTi3-yTyO 12 (2) wherein R is a lanthanide series element selected from the group consisting of Nd, Gd, Pr, Pm, Sm, Eu, Er, Tm, Tb, Yb, Dy, Ho, Er, Ce, and mixtures thereof; T is a transition element selected from the group consisting of Co, Ni, Fe, Mn, W, V, Nb, Mo, Ta, Zr and mixtures thereof; x is a number of from 0.1 to 4; and y is a number of from 0.001 to 3. Further disclosed are electronic devices comprising the perovskites materials. Since the perovskites materials have a magnetoelectric effects originated from large magnetic moment and ferroelectricity over room temperature, they can be utilized as various types of parts in electronic devices, including spintronic devices, information storage devices, magnetic-electric sensors, magnetic sensors, electric sensors, optoelectronic devices, microwave electronic devices, transducers, etc.
Abstract:
The invention relates to a method for coating a substrate, according to which a fine-particle suspension of crystalline oxide particles is applied to a substrate, the suspension medium is evaporated, and the coating is sintered on the substrate.
Abstract:
A method for preparing a ceramic which comprises forming a film in which a composite oxide material having an oxygen octahedral structure and a paraelectric material having a catalytic action towards the composite oxide material are mixedly present, and then subjecting the film to a heat treatment, wherein the paraelectric material comprises a layered catalytic substance containing Si as a constituent element or containing Si and Ge as constituent elements, and the heat treatment comprises firing and post-annealing, wherein at least the post-annealing is preferably carried out in a pressurized atmosphere containing at least one of oxygen and ozone; and a ceramic which comprises a composite oxide having an oxygen octahedral structure and containing Si and Ge in the oxygen octahedral structure.
Abstract:
An object of the present invention is to obtain a dielectric ceramic composition wherein the dielectric constant ε is large, the temperature coefficient τf of the resonance frequency is close to 0, and which has a large Q value, by adding to and blending with a ceramic composition whose τf of the resonance frequency is large on the plus side a ceramic composition whose temperature coefficient τf is large on the minus side. In an Li 2 O-R 2 O 3 -TiO 2 -based composition where R is one or two or more of Nd, Sm, Pr and La, an improved dielectric constant ε can be achieved by introducing a specific quantity of Bi 2 O 3 , and τf can be shifted to the plus side and in addition a considerable improvement in Qf achieved by introducing a specific quantity of MO (where M is one or two of Ca and Sr). Furthermore, by introducing a specific quantity of Na 2 O together with the MO (where M is one or two of Ca and Sr), in particular in the case of material of εr≥ 150, it is possible to control τf to the vicinity of 0 while maintaining Qf at an high value.
Abstract:
This invention provides the novel dielectric BiCu3Ti3FeO12. BiCu3Ti3FeO12 provides good dielectric tunability and low loss over a frequency range of from 10 kHz to 10 MHz and is especially useful in tunable devices such as phase shifters, matching networks, oscillators, filters, resonators, and antennas comprising interdigital and trilayer capacitors, coplanar waveguides and microstrips.