Cerium-doped nanometer barium ferrite thin film and method for making same

A barium ferrite and cerium doping technology is applied in the field of cerium-doped nano-barium ferrite thin films and their preparation, and achieves the effects of easy quantitative doping, control of thin film composition and microstructure, and simple process flow

Inactive Publication Date: 2009-06-10
NORTHWESTERN POLYTECHNICAL UNIV
View PDF0 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no report about the cerium-doped nano-barium ferrite thin film and its preparation by sol-gel method

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Cerium-doped nanometer barium ferrite thin film and method for making same
  • Cerium-doped nanometer barium ferrite thin film and method for making same
  • Cerium-doped nanometer barium ferrite thin film and method for making same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] This embodiment is to prepare a rare earth cerium-doped nano-barium ferrite film with a ratio of Ce / Ba=0.2, and the specific steps are as follows:

[0027] 1. Put 0.5g of barium nitrate and 0.1662g of cerium nitrate into beaker A, add 200ml of distilled water to make the solution viscosity 2-4mPa·s, stir until completely dissolved;

[0028] 2. Put 6.956g of main salt ferric nitrate into beaker B, add 200ml of distilled water to make the solution viscosity 2-4mPa·s, stir until completely dissolved;

[0029] 3. Add 10.252g of citric acid into the B beaker and stir until completely dissolved;

[0030] 4. Add the contents in beaker A to beaker B, and stir for 5 minutes; slowly add 5.44ml of ethylene glycol, continue to stir and control the temperature between 70°C, and slowly evaporate to obtain a sol;

[0031] 5. Soak the silica substrate in the sol, and use the dipping-pulling method to form a film; pull it out of the liquid surface vertically at a rate of 2mm / s to form ...

Embodiment 2

[0036] This embodiment is to prepare a rare earth cerium-doped nano-barium ferrite film with a ratio of Ce / Ba=0.4, and the specific steps are as follows:

[0037] 1. Put 0.5g of barium nitrate and 0.3324g of cerium nitrate into beaker A, add 200ml of distilled water to make the solution viscosity 2-4mPa·s, stir until completely dissolved;

[0038] 2. Put 6.956g of the winner's salt, ferric nitrate, into beaker B, add 200ml of distilled water to make the solution viscosity 2-4mPa·s, and stir until completely dissolved;

[0039] 3. Add 10.453g of citric acid into the B beaker and stir until completely dissolved;

[0040] 4. Add the content in beaker A to beaker B, and stir for 5 minutes; slowly add 5.55ml of ethylene glycol, continue to stir and control the temperature between 80°C, and slowly evaporate to obtain a sol with a suitable viscosity;

[0041] 5. Soak the silica substrate in the sol, and use the dipping-pulling method to coat the film; pull it out of the liquid surfa...

Embodiment 3

[0046] This embodiment is to prepare a rare earth cerium-doped nano-barium ferrite film with a ratio of Ce / Ba=0.6, and the specific steps are as follows:

[0047] 1. Put 0.5g of barium nitrate and 0.4985g of cerium nitrate into beaker A, add 200ml of distilled water to make the solution viscosity 2-4mPa·s, stir until completely dissolved;

[0048] 2. Put 6.956g of main salt ferric nitrate into beaker B, add 200ml of distilled water to make the solution viscosity 2-4mPa·s, stir until completely dissolved;

[0049] 3. Add 10.654g citric acid into the B beaker and stir until completely dissolved;

[0050] 4. Add the contents in beaker A to beaker B, and stir for 5 minutes; slowly add 5.65ml of ethylene glycol, continue to stir and control the temperature between 75°C, and slowly evaporate to obtain a sol with a suitable viscosity;

[0051] 5. Soak the silica substrate in the sol, and use the dipping-pulling method to coat the film; pull it out of the liquid surface vertically at...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
sizeaaaaaaaaaa
lengthaaaaaaaaaa
Login to view more

Abstract

The invention relates to a cerium-doped nanometer barium ferrite film and a preparation method thereof. The film is characterized in that the formula comprises 1.48 to 1.60g / 100ml of glycol, 2.51 to 2.71g / 100ml of citric acid, 1.74g / 100ml of ferric nitrate, 0.125g / 100ml of barium nitrate, and 0.04 to 0.125g / 100ml of cerium nitrate. The preparation method comprises: a crystalline nanometer barium ferrite film is prepared on a quartz substrate; the cerium-doped nanometer barium ferrite film with high purity is obtained through the optimization of preparation technology; and the film can be used for preparing magnetic recording materials and wave-absorbing materials. The method has the advantages that the method has simple process flow and low cost, is convenient for preparing films on various substrates with different shapes, is easy to obtain an uniform and multi-component oxide film, is easy for quantitative doping, and can effectively control the constituents and a microscopic structure of the film.

Description

technical field [0001] The invention relates to a cerium-doped nano-barium ferrite film and a preparation method thereof. The crystalline nano-barium ferrite film is prepared on a quartz substrate, and high-purity cerium-doped barium ferrite is obtained by optimizing the preparation process. Bulk nano film, thin film can be used to prepare magnetic recording materials and absorbing materials. Background technique [0002] The current research on the nano-barium ferrite material shows that the material has unsatisfactory absorbing properties and the absorbing frequency band needs to be further broadened. Rare earth elements are rich in f-layer electrons, and their compounds themselves are absorbing materials with excellent magnetic properties. Therefore, the doping of rare earth elements will inevitably play a greater role in improving the absorbing performance of the entire system of barium ferrite. At present, it has been reported in the literature that the doping of rare ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): H01F10/20C04B35/26C04B35/624
Inventor 黄英杨永峰齐暑华李玉青黄飞
Owner NORTHWESTERN POLYTECHNICAL UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap