Giant dielectric constant strontium titanate dielectric ceramic and preparation method thereof

A technology of giant dielectric constant and dielectric ceramics, which is applied in the field of strontium titanate dielectric ceramics and its preparation, can solve the problems of increased dielectric loss and dielectric constant, and achieve improved dielectric properties, increased dielectric constant, high Effect of Insulation Resistivity
CN113248253AInactive Publication Date: 2021-08-13TIANJIN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TIANJIN UNIV
Publication Date
2021-08-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to the technical field of ceramic materials, and discloses a giant dielectric constant strontium titanate dielectric ceramic and a preparation method thereof. The chemical formula of the ceramic is Sr1-xEuxTiO3, wherein x is more than or equal to 0.01 and less than or equal to 0.015. The preparation method comprises the following steps: proportioning SrCO3, Eu2O3 and TiO2, mixing, and carrying out ball milling; drying the ball-milled raw materials, sieving, pre-sintering at 1000 DEG C for 3 hours, and mixing and ball-milling the pre-sintered powder; drying and sieving the ball-milled raw materials, adding a binder into the obtained powder, sieving, granulating, pressing into a green body, and discharging glue; and sintering the blank body after complete glue removal at 1400 DEG C in N2 atmosphere, and preserving heat for 6 hours to obtain the final sample. According to the invention, the Sr1-xEuxTiO3 dielectric ceramic is prepared through doping modification by adopting a traditional solid-phase method, the dielectric constant is improved, the lower dielectric loss is kept, and the dielectric property of the ceramic material is further improved, so that the actual application requirements are better met.
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Description

technical field

[0001] The invention belongs to the technical field of ceramic materials, and in particular relates to a strontium titanate dielectric ceramic and a preparation method thereof.

[0002] technical background

[0003] With the progress of modern information technology, especially the rapid development of electronics and microelectronics industry, the miniaturization and integration of electronic components have put forward higher and higher requirements. Chipping and miniaturization have become one of the important symbols to measure the development level of electronic components. As an important part of electronic components, dielectric ceramic materials also put forward higher requirements for their dielectric properties. Materials with a giant dielectric constant have received extensive attention. A giant dielectric constant refers to a dielectric whose dielectric constant is higher than or equal to 10 3 order of magnitude. Due to its high dielectric const...

Claims

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