摘要:
The disclosed is a dielectric ceramic composition in which dielectric particles 2a are formed. The dielectric particle 2a has a core 22a comprised of hexagonal barium titanate, and a shell 24a formed on an outer circumference of the core 22a and comprised of cubical or tetragonal barium titanate. The purpose of the present invention is to provide a new dielectric ceramic composition, in which permittivity is hardly lowered due to size effect, a good balance between high insulation resistance and permittivity can easily be achieved, and changes in insulation resistance and specific permittivity due to temperature are small; and an electronic component such as a multilayer ceramic capacitor using the dielectric ceramic composition as its dielectric layer.
摘要:
Dielectric ceramic composition includes a hexagonal type barium titanate as a main component shown by a generic formula (Bai-αMα)A(Ti1-βMnβ)BO3 and having hexagonal structure wherein an effective ionic radius of 12-coordinated “M” is −20% or more to +20% or less with respect to an effective ionic radius of 12-coordinated Ba2+ and the A, B, α and β satisfy relations of 0.900≦(A/B)≦1.040, 0.003≦α≦0.05, 0.03≦β≦0.2, and as subcomponents, with respect to the main component, certain contents of alkaline earth oxide such as MgO and the like, Mn3O4 and/or Cr2O3, CuO, Al2O3, rare earth element oxide and glass component including SiO2. According to the present invention, it can be provided the hexagonal type barium titanate powder and dielectric ceramic composition which are preferable for producing electronic components such as a capacitor and the like showing high specific permittivity, having advantageous insulation property and sufficient reliability.
摘要翻译:介电陶瓷组合物包括六方晶系钛酸钡作为主要成分,由通式(Bai-αMα)A(Ti1-&bgr; Mn&bgr))BO3表示,并具有六方结构,其中12配位“M”的有效离子半径为 相对于12配位Ba2 +和A,B,α和bgr的有效离子半径为-20%以上至+ 20%以下。 满足0.900&nlE的关系;(A / B)≦̸ 1.040,0.003≦̸α≦̸ 0.05,0.03≦̸&bgr≦̸ 0.2,作为副成分,对于主要成分,碱土金属氧化物的某些含量 MgO等,Mn 3 O 4和/或Cr 2 O 3,CuO,Al 2 O 3,稀土元素氧化物和包含SiO 2的玻璃成分。 根据本发明,可以提供六方晶系的钛酸钡粉末和电介质陶瓷组合物,该六方晶系钛酸钡粉末和电介质陶瓷组合物优选用于制造具有高比介电常数的诸如电容器等的电子部件,具有有利的绝缘性和足够的可靠性。
摘要:
A purpose of the present invention is to provide a multilayer semiconductor ceramic capacitor, which makes coexistence of a high dielectric property and a high insulating resistance of a semiconductor ceramic possible by improving insulating property of the semiconductor ceramic component. In order to achieve such object, BaTiO3 based semiconductor ceramic of the invention is expressed by BaA(Ti1-α-βGaαNbβ)BO3, wherein A/B mole ratio is within a range of 0.900 or more to 1.060 or less and α/β mole ratio is within a range of 0.92 or more to 100 or less.
摘要:
Dielectric ceramic composition includes a hexagonal type barium titanate as a main component shown by a generic formula of (Ba1-αMα)A(Ti1-βMnβ)BO3 and having hexagonal structure wherein an effective ionic radius of 12-coordinated “M” is −20% or more to +20% or less with respect to an effective ionic radius of 12-coordinated Ba2+ and the A, B, α and β satisfy relations of 1.000
摘要翻译:电介质陶瓷组合物包括六方晶系钛酸钡作为主要成分,由通式(Ba1-αMα)A(Ti1-&bgr; Mn&bgr))BO3表示,并具有六方结构,其中12配位“M”的有效离子半径 相对于12配位Ba2 +和A,B,α和bgr的有效离子半径为-20%以上至+ 20%以下。 满足1.000 <(A / B)&nlE; 1.040,0&nlE;α<0.003,0.03&nlE;&bgr;&nlE; 0.2的关系,作为副成分,关于主成分,碱土金属氧化物的某些含量如MgO和 类似物,Mn 3 O 4和/或Cr 2 O 3,以及CuO和Al 2 O 3以及包含SiO 2的稀土元素氧化物和玻璃成分。 根据本发明,可以提供六方晶系的钛酸钡粉末和电介质陶瓷组合物,其用于制造电容器等电介质比较高的等介电常数的电子元件,具有优良的绝缘性能和足够的可靠性。
摘要:
A hexagonal type barium titanate powder comprising barium titanate as a main component shown by a generic formula of (Ba1-αMα)A(Ti1-βGaβ)BO3 and having hexagonal structure wherein;an effective ionic radius of 12-coordinated “M” is −25% or more to +25% or less with respect to an effective ionic radius of 12-coordinated Ba2+, and said A, B, α and β satisfy relations of 0.975
摘要:
To provide a hexagonal type barium titanate powder having a fine and uniform particle size and contributing to a thinner dielectric layer. A hexagonal type barium titanate powder according to the present invention has the following characteristics that a maximum particle diameter is 1.0 μm or less, a ratio of 90% accumulated particle diameter and 50% accumulated particle diameter is 3.0 or less, and a hexagonal ratio is 50% or more.
摘要:
An image reading device includes a sensor and circuitry. The sensor reads an image on a recording medium. The circuitry inspects the image and outputs an inspection result. The circuitry excludes an area of the recording medium as a first area from an area to be inspected, based on a type of the recording medium or a position of the recording medium with respect to a reading position at which the sensor reads the image, to determine a second area to be inspected. The circuitry outputs the inspection result based on the second area.
摘要:
An image abnormality detecting device includes an image reader, an abnormality detector, a pattern holder, and circuitry. The image reader is configured to read an image on a recording medium. The abnormality detector is configured to detect abnormality of the image based on read information of the image on the recording medium, read by the image reader. The pattern holder has a check pattern and is disposed within a reading area of the image reader. The circuitry is configured to inspect a detecting operation of the abnormality detector based on read information of the check pattern read by the image reader.
摘要:
An image reading device includes a background unit, a reading unit, and circuitry. The background unit is configured to be a background in reading of a recording medium and includes a first region that is black and a second region that is different from the first region. The reading unit is configured to read an image with the background unit as the background, and generate a read value based on a result of reading the image with the background unit. The circuitry is configured to correct the read value based on a reference value generated by the reading unit by reading the second region of the background unit.
摘要:
An information processing apparatus includes a central processing unit (CPU), a plurality of field-programmable gate arrays (FPGAs) connected to the CPU to communicate with the CPU, and a plurality of memories provided in a one-to-one relationship with the plurality of FPGAs. Each of the plurality of memories is configured to store configuration data of a corresponding one of the plurality of FPGAs. One of the plurality of FPGAs is configured to update the configuration data of each of the plurality of FPGAs stored in a corresponding one of the plurality of memories.