Method for preparing briented growth dielectric-constant adjustable strontium lead titanate film

A technology for adjusting the dielectric constant of lead strontium titanate is applied in the field of preparation of thin films of lead strontium titanate with adjustable dielectric constant, which can solve the problem of not easy large-scale practical application and industrialization, limiting the application range of materials and increasing the preparation cost. and other problems, to achieve the effect of promoting the crystallization process of PST, good market prospects, and expanding the preparation route.

Inactive Publication Date: 2007-11-14
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technique allows for better control over properties such as thickness or alignment during manufacturing processes compared to existing techniques like spin coating. It involves creation of special layers that help improve performance without requiring more expensive materials than traditional ways. Additionally, this new way makes production faster and cheaper due to less time needed per unit area. Overall, these technical improvements make possible improved quality products made from rare earth element (RE) compounds used in electronic devices.

Problems solved by technology

This patented technical problem addressed in this patents relates to finding ways to reduce manufacturing costs while maintaining superior magnetic property values in various applications involving electronic components like microdevices. Previous attempts were either expensive or did not result satisfactory because these techniques resulted in inferior alignment or reduced capacitor leakage current when applied to thin films. To address this issue, there was developed a novel technique called pulsumetronics (PT), where nanoplasmon structures made from specific elements act as inductors and modulators within the device itself. These advancements make possible the creation of highly preferential orientation/epipersion type PST films without requiring specialized substrates.

Method used

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  • Method for preparing briented growth dielectric-constant adjustable strontium lead titanate film
  • Method for preparing briented growth dielectric-constant adjustable strontium lead titanate film

Examples

Experimental program
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Embodiment 1

[0029]Lead acetate is dissolved in ethylene glycol methyl ether, and the concentration of Pb after heating to 80°C and stirring to dissolve is 0.2mol / L. Butyl titanate is dissolved in ethylene glycol methyl ether, and the concentration is 0.2mol / L after stirring evenly. Then the two solutions are mixed, add glacial acetic acid with a volume ratio of 1:8 to the mixed solution, continue to stir for 10 minutes, then add terbium chloride ethanol solution in a 2% ratio, and finally adjust the concentration with ethylene glycol methyl ether to obtain Pb-Ti -Te precursor sol, the concentrations of the three components are: Pb, 0.1mol / L; Ti, 0.1mol / L; Te, 0.002mol / L. Stand for 48h for use. A 2.5cm×4.5cm ITO glass substrate was ultrasonically oscillated with 0.25mol / L NaOH solution at room temperature for 15min, rinsed with deionized water, and ultrasonically oscillated in alcohol for 15min to obtain a substrate with a clean surface. Using the static sol mentioned above, the sol-coate...

Embodiment 2

[0032] Lead acetate is dissolved in ethylene glycol methyl ether, and the concentration of Pb after heating to 80°C and stirring to dissolve is 1.5mol / L. Butyl titanate is dissolved in ethylene glycol methyl ether, and the concentration is 1.5mol / L after stirring evenly. Then the two solutions are mixed, add glacial acetic acid with a volume ratio of 1:4 to the mixed solution, continue to stir for 10 minutes, then add terbium chloride ethanol solution in a 4% ratio, and finally adjust the concentration with ethylene glycol methyl ether to obtain Pb-Ti -Te precursor sol, the concentrations of the three components are: Pb, 0.4mol / L; Ti, 0.4mol / L; Te, 0.016mol / L. Stand for 48h for use. A 2.5cm×4.5cm ITO glass substrate was ultrasonically oscillated with 0.25mol / L NaOH solution at room temperature for 15min, rinsed with deionized water, and ultrasonically oscillated in alcohol for 15min to obtain a substrate with a clean surface. Using the above standing sol, use the method of ve...

Embodiment 3

[0035] Lead acetate is dissolved in ethylene glycol methyl ether, heated to 80°C and stirred to dissolve, and the Pb concentration is 0.8mol / L. Butyl titanate is dissolved in ethylene glycol methyl ether, and the concentration is 0.8mol / L. Then the two solutions are mixed, add glacial acetic acid with a volume ratio of 1:6 to the mixed solution, continue to stir for 10 minutes, then add terbium chloride ethanol solution in a 1% ratio, and finally adjust the concentration with ethylene glycol methyl ether to obtain Pb-Ti -Te precursor sol, the concentrations of the three components are: Pb, 0.25mol / L; Ti, 0.25mol / L; Te, 0.0025mol / L. Stand for 48h for use. A 2.5cm×4.5cm ITO glass substrate was ultrasonically oscillated with 0.25mol / L NaOH solution at room temperature for 15min, rinsed with deionized water, and ultrasonically oscillated in alcohol for 15min to obtain a substrate with a clean surface. Using the above standing sol, use the method of vertical pulling on the clean s...

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Abstract

The present invention discloses a growth orientation of the dielectric constant adjustable strontium titan-ate thin films lead the preparation method, in the first coated onto a glass substrate at the end of the ITO electrodes drawn orientation induced by PT terbium-doped layer; again in terbium-doped Miscellaneous PT orientation induced layer deposition PST film; terbium-doped layer is induced by PT orientation (100) preferred orientation, the film also has PST (100) preferred orientation. The present invention through the random orientation of the substrate orientation PT induced by layer, induced by a high degree of preferred orientation of the PST film, avoid conventional film orientation of the single crystal substrates for high dependence at the same time this invention can be obtained relatively PST Films high scalability, high-performance approach for preparing a new film PST; PT induced orientation of the film can PST induced orientation, and promote the crystallization PST; whole process is simple to prepare low temperature, short cycle , the energy and cost savings with good market prospects.

Description

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Claims

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Application Information

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Owner ZHEJIANG UNIV
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