Abstract:
The disclosed invention relates to unsupported, anisotropically shaped, cubic SrTiO3 single crystal particles and their method of manufacture. The particles have a rectangular face and measure about 10-40 micron in edge length, and about 2-5 micron in thickness. The anisotropically shaped, cubic SrTiO3 single crystal particles are made by reacting tabular Sr3Ti2O7 with TiO2 in the presence of a molten alkali salt.
Abstract translation:所公开的发明涉及无支撑的各向异性立方体SrTiO3单晶颗粒及其制造方法。 颗粒具有矩形面并且在边缘长度上测量约10-40微米,厚度约2-5微米。 各向异性立方体SrTiO3单晶粒子是通过在熔融碱盐存在下使片状Sr 3 Ti 2 O 7与TiO 2反应制成的。
Abstract:
A PTC thermistor material in which a conductive phase having a specific resistance which is lower than that of a matrix phase and abruptly changes near the melting point of the conductive phase is nearly uniformly distributed in the matrix phase. The matrix phase is made of a polycrystalline ceramic, glass-polycrystalline ceramic composite material, glass, crystallized glass, high polymer material, etc., and the conductive phase is made of a metal composed mainly of Bi. Therefore, various characteristics of the thermistor material, such as the PTCR characteristic appearing temperature, rate of change in specific resistance, etc., can be controlled and the material can be applied to such circuit parts that are normally subject to large currents. In addition, the material can be manufactured easily and a stable PTCR characteristic can be obtained from the material. Moreover, the rated current and degree of freedom in shape of the material can be increased even when the size of the material is reduced.
Abstract:
[Problem] The problem addressed lies in providing a dielectric composition which is advantageously used in a power supply circuit with a high rated voltage and has an excellent dielectric constant when a DC bias is applied and an excellent high-temperature load lifespan, and also in providing a dielectric element comprising the same, an electronic component and a laminated electronic component. [Solution] A dielectric composition having a perovskite crystal structure containing at least Bi, Na, Sr and Ti. Said dielectric composition includes a low-Bi phase in which the Bi concentration is no greater than 0.8 times the mean Bi concentration in the dielectric composition as a whole.
Abstract:
[Problem] The problem addressed lies in providing a dielectric composition which is advantageously used in a power supply circuit having a high rated voltage, and has an excellent dielectric constant when a DC bias is applied, excellent DC bias characteristics and excellent DC bias resistivity, and also in providing a dielectric element employing said dielectric composition, an electronic component and a laminated electronic component. [Solution] A dielectric composition having a perovskite crystal structure containing at least Bi, Na, Sr and Ti is used. The dielectric composition comprises at least one selected from among La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Yb, Ba, Ca, Mg and Zn. The dielectric composition comprises specific particles having a core- shell structure that has at least one core portion including SrTiO 3 . α
Abstract:
The problem addressed lies in providing a dielectric composition which has a good dielectric constant when a DC bias is applied and good DC bias characteristics, and which also has a good high- temperature load lifespan and good mechanical strength; and also in providing a dielectric element employing said dielectric composition, an electronic component and a laminated electronic component. A dielectric composition comprising particles having a perovskite crystal structure including at least Bi, Na, Sr and Ti. Said dielectric composition includes between 0.5 molar parts and 11.1 molar parts of at least one selected from among La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Yb, Ba, Ca, Mg and Zn, taking Ti as 100 molar parts. 0.17 ≤ α ≤ 2.83, where α is the molar ratio of Bi with respect to Sr. At least some of the particles include a low-Bi phase having a Bi concentration of no greater than 0.8 times the mean Bi concentration of the dielectric composition as a whole. The total surface area of the low-Bi phase within the particles is between 0.1% and 15% of the total surface area of the particles.
Abstract:
The problem addressed lies in providing a dielectric composition which is advantageously used in a power supply circuit with a high rated voltage and has an excellent dielectric constant when a DC bias is applied and an excellent high-temperature load lifespan, and also in providing a dielectric element comprising the same, an electronic component and a laminated electronic component. A dielectric composition having a perovskite crystal structure containing at least Bi, Na, Sr and Ti. Said dielectric composition includes a high-Bi phase in which the Bi concentration is at least 1.2 times the mean Bi concentration in the dielectric composition as a whole.
Abstract:
The present invention provides a dielectric composition which is advantageously used for medium- and high-voltage applications with a relatively high rated voltage, which has a high dielectric constant when a high DC bias is applied, both in the region of room temperature and at high temperatures, and which also has superior withstand field characteristics, and also provides a dielectric element employing said dielectric composition, an electronic component, and a laminated electronic component. A dielectric composition containing a main component and an auxiliary component, wherein: the main component is represented by (Bi a Na b Sr c Ln d ) TiO 3 ; Ln is at least one selected from among rare earth elements; and a, b, c and d satisfy the following: 0.100≤a≤0.400, 0.100≤b≤0.400, 0.100≤c≤0.700, 0≤d≤0.100 and 0.900≤a+b+c+d≤1.050. The auxiliary component contains a first auxiliary component and/or a second auxiliary component. The first auxiliary component comprises at least one selected from the group consisting of Li and K. The second auxiliary component comprises at least one selected from the group consisting of Cu, Zn, Mn, Mg and Co.
Abstract translation:本发明提供一种电介质组合物,其有利地用于具有相对高的额定电压的中等和高压应用,当施加高的直流偏压时,其在室温和高温区域都具有高介电常数 温度,并且还具有优异的耐受场特性,并且还提供采用所述电介质组合物,电子部件和层压电子部件的电介质元件。 一种包含主成分和辅助成分的电介质组合物,其中:主成分由(BiaNabSrcLnd)TiO 3表示; Ln是选自稀土元素中的至少一种; a,b,c和d满足下列条件:0.100≤a≤0.400,0.100≤b≤0.400,0.100≤c≤0.700,0≤d≤0.100,0.900≤a+ b + c +d≤1.050。 辅助部件包含第一辅助部件和/或第二辅助部件。 第一辅助组分包括选自Li和K中的至少一种。第二辅助组分包括选自Cu,Zn,Mn,Mg和Co中的至少一种。
Abstract:
The aim of the present invention lies in providing a dielectric composition which has a relatively high dielectric constant of 800 or greater, and which has relatively low dielectric loss of 4% or less when a DC bias of at least 8 V/ym is applied, and also in providing a dielectric element employing said dielectric composition, an electronic component, and a laminated electronic component. A dielectric composition having a main component represented by (Bi a Na b Sr c Ba d ) (α x Ti 1-x ) O 3 , characterized in that a is at least one selected from Zr and Sn; and a, b, c, d and x satisfy the following: 0.140≤a