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Giant-dielectric-constant low-loss CCTO-based ceramic material preparation method

A ceramic material and low-loss technology, which is applied in the preparation of low-loss CCTO-based ceramic materials and the field of giant dielectrics, can solve the problems of complex process and failure to improve the overall performance of CCTO materials, and achieve the effect of low cost

Inactive Publication Date: 2019-05-10
SHANGHAI LANGYAN OPTOELECTRONICS TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these doping studies did not achieve the purpose of improving the overall performance of CCTO materials. Usually, it reduces the dielectric loss while also reducing the dielectric constant, or brings more technological advantages while improving the dielectric properties. complexity problem

Method used

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  • Giant-dielectric-constant low-loss CCTO-based ceramic material preparation method
  • Giant-dielectric-constant low-loss CCTO-based ceramic material preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Using tetrabutyl titanate, copper nitrate, and calcium acetate as the precursor raw materials, with absolute ethanol and glacial acetic acid as the solvent, first weigh 0.04mol of tetrabutyl titanate, dissolve it in absolute ethanol, and stir with a glass rod Mix evenly, add glacial acetic acid, and continue stirring for 1 hour with a magnetic stirrer to prepare a precursor solution containing titanium ions, and weigh 0.03mol of Cu(NO 3 ) 2 ·3H 2 O, dissolved in absolute ethanol, stirred on a magnetic stirrer to a clear and transparent blue solution, and then this blue solution was added to the aforementioned precursor solution containing titanium ions to form a clear and transparent blue-green solution. To prepare a solution containing calcium ions, a certain amount of Ca(CH 3 COO) 2 ·H 2 O, be dissolved in 40ml deionized water to obtain a solution containing calcium ions. Slowly add this solution dropwise to the aforementioned blue-green solution containing titan...

Embodiment 2

[0030] Using tetrabutyl titanate, copper nitrate, and calcium acetate as the precursor raw materials, with absolute ethanol and glacial acetic acid as the solvent, first weigh 0.04mol of tetrabutyl titanate, dissolve it in absolute ethanol, and stir with a glass rod Mix evenly, add glacial acetic acid, and continue stirring for 1 hour with a magnetic stirrer to prepare a precursor solution containing titanium ions, and weigh 0.02mol of Cu(NO3 ) 2 ·3H 2 O, dissolved in absolute ethanol, stirred on a magnetic stirrer to a clear and transparent blue solution, and then this blue solution was added to the aforementioned precursor solution containing titanium ions to form a clear and transparent blue-green solution, and weighed at the same time Dissolve 0.01mol of zinc acetate in 20ml of deionized water, stir evenly, add the aforementioned solution containing titanium ions and copper ions, similarly prepare a solution containing calcium ions according to the ratio, that is, weigh a ...

Embodiment 3

[0032] Using tetrabutyl titanate, copper nitrate, and calcium acetate as the precursor raw materials, with absolute ethanol and glacial acetic acid as the solvent, first weigh 0.04mol of tetrabutyl titanate, dissolve it in absolute ethanol, and stir with a glass rod Mix evenly, add glacial acetic acid, and continue to stir for 1 hour with a magnetic stirrer to prepare a precursor solution containing titanium ions, and weigh 0.03mol of Cu(NO 3 ) 2 ·3H 2 O, dissolved in absolute ethanol, stirred on a magnetic stirrer to a clear and transparent blue solution, and then this blue solution was added to the aforementioned precursor solution containing titanium ions to form a clear and transparent blue-green solution. To prepare a solution containing calcium ions, a certain amount of Ca(CH 3 COO) 2 ·H 2 O, be dissolved in 60ml deionized water to obtain a solution containing calcium ions. Slowly add this solution dropwise to the aforementioned blue-green solution containing titani...

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Abstract

The invention discloses a giant-dielectric-constant low-loss CCTO-based ceramic material preparation method. The method includes steps: dissolving a precursor material into a solvent to obtain precursor sol; standing the precursor sol, and drying to obtain dry gel; grinding the dry gel into fine powder, drying and grinding to obtain a CCTO-based ceramic material precursor; adding the CCTO-based ceramic material precursor into a copper crucible, performing laser irradiation, and removing the solvent to obtain CCTO-based ceramic powder; subjecting the CCTO-based ceramic powder to compaction forming and laser sintering to obtain a giant-dielectric-constant low-loss CCTO-based ceramic material. Compared with the prior art, the method has advantages that the dielectric constant of the ceramic material prepared according to the method reaches 104 or above, and the preparation method is low in cost, quick, efficient and suitable for extensive application of CCTO giant-dielectric-constant materials to high-density storage devices.

Description

technical field [0001] The invention belongs to the field of research and technical development of dielectric ceramic materials, and in particular relates to a preparation method of a CCTO-based ceramic material with giant dielectric and low loss. Background technique [0002] CCTO is a kind of giant dielectric constant ceramic material, in a wide frequency range and temperature range, the dielectric constant can reach 10 5 Above, with the rapid development of the electronic communication industry and the new energy industry, the research and development of the giant dielectric properties of CCTO has attracted more and more attention, especially in high-density storage devices, which has a broad application prospect. CCTO belongs to ABO 3 Type compounds, in which the A site is Ca and Cu, and the B site is Ti, which has a perovskite-like structure. Since it was proposed by Subramanian et al. in 2000 [M.A.Subramanian, D.Li, N.Duan, B.A.Reisner, A.Sleight, Highdielectric cons...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/462C04B35/622C04B35/624C04B35/626
Inventor 曾和平黄延伟
Owner SHANGHAI LANGYAN OPTOELECTRONICS TECH
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