Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Multiferroic Bi0.96-xSr0.04RExFe0.94Mn0.04Cr0.02O3-NiFe2O4 composite film and preparation method thereof

A composite film, multiferroic technology, applied in the field of materials, can solve the problems of weak ferromagnetic nature of hysteresis loops that cannot be saturated, large leakage conductance, limited practical applications, etc., to achieve increased structural distortion, magnetic coercive field Small, the effect of reducing leakage current density

Active Publication Date: 2015-03-25
SHAANXI UNIV OF SCI & TECH
View PDF3 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, pure phase BiFeO 3 There is a problem of large leakage conductance, which makes it impossible to obtain a saturated hysteresis loop and its weak ferromagnetic nature, thus limiting its practical application

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
  • Multiferroic Bi0.96-xSr0.04RExFe0.94Mn0.04Cr0.02O3-NiFe2O4 composite film and preparation method thereof
  • Multiferroic Bi0.96-xSr0.04RExFe0.94Mn0.04Cr0.02O3-NiFe2O4 composite film and preparation method thereof
  • Multiferroic Bi0.96-xSr0.04RExFe0.94Mn0.04Cr0.02O3-NiFe2O4 composite film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035]Step 1, dissolving ferric nitrate and nickel nitrate in a molar ratio of 1:2 in ethylene glycol methyl ether, stirring for 30 minutes, and then adding acetic anhydride to obtain a stable NiFe with a Fe ion concentration of 0.15mol / L 2 o 4 Precursor solution, the volume ratio of ethylene glycol methyl ether and acetic anhydride is 3:1;

[0036] Step 2, using bismuth nitrate, strontium nitrate, cerium nitrate, iron nitrate, manganese nitrate and chromium nitrate as raw materials (excessive bismuth nitrate, x=0.01, RE=Ce), molar ratio 0.99:0.04:0.01:0.94:0.04: 0.02 is dissolved in the mixed ethylene glycol methyl ether and acetic anhydride to obtain a stable Bi with a metal ion concentration of 0.15 mol / L 0.95 Ce 0.04 SM 0.01 Fe 0.94 mn 0.04 Cr 0.02 o 3 Precursor solution; wherein the volume ratio of ethylene glycol methyl ether and acetic anhydride is 3:1;

[0037] Step 3: Select the FTO / glass substrate as the substrate, place the cut FTO / glass substrate in deterge...

Embodiment 2

[0042] Step 1, dissolving ferric nitrate and nickel nitrate in a molar ratio of 1:2 in ethylene glycol methyl ether, stirring for 30 minutes, and then adding acetic anhydride to obtain a stable NiFe with a Fe ion concentration of 0.1mol / L 2 o 4 Precursor solution, the volume ratio of ethylene glycol methyl ether and acetic anhydride is 2.5:1;

[0043] Step 2, using bismuth nitrate, strontium nitrate, neodymium nitrate, ferric nitrate, manganese nitrate and chromium nitrate as raw materials (excessive bismuth nitrate, x=0.04, RE=Nd), molar ratio 0.96:0.04:0.04:0.94:0.04: 0.02 is dissolved in the mixed ethylene glycol methyl ether and acetic anhydride to obtain a stable Bi with a metal ion concentration of 0.003 mol / L 0.92 Sr 0.04 Nd 0.04 Fe 0.94 mn 0.04 Cr 0.02 o 3 Precursor solution; wherein the volume ratio of ethylene glycol methyl ether and acetic anhydride is 2.5:1;

[0044] Step 3: Select the FTO / glass substrate as the substrate, place the cut FTO / glass substrate ...

Embodiment 3

[0049] Step 1, dissolving ferric nitrate and nickel nitrate in a molar ratio of 1:2 in ethylene glycol methyl ether, stirring for 30 minutes, then adding acetic anhydride to obtain a stable NiFe with a Fe ion concentration of 0.25mol / L 2 o 4 Precursor solution, the volume ratio of ethylene glycol methyl ether and acetic anhydride is 3.5:1;

[0050] Step 2, using bismuth nitrate, strontium nitrate, europium nitrate, iron nitrate, manganese nitrate and chromium nitrate as raw materials (bismuth nitrate is excessive, x=0.07, RE=Eu), molar ratio 0.93:0.04:0.07:0.94:0.04: 0.02 is dissolved in the mixed ethylene glycol methyl ether and acetic anhydride to obtain a stable Bi with a metal ion concentration of 0.3 mol / L 0.89 Sr 0.04 Eu 0.07 Fe 0.94 mn 0.04 Cr 0.02 o 3 Precursor solution; wherein the volume ratio of ethylene glycol methyl ether and acetic anhydride is 3.5:1;

[0051] Step 3: Select the FTO / glass substrate as the substrate, place the cut FTO / glass substrate in de...

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
remanent polarizationaaaaaaaaaa
Login to View More

Abstract

The invention discloses a multiferroic Bi0.96-xSr0.04RExFe0.94Mn0.04Cr0.02O3-NiFe2O4 composite film and a preparation method thereof. The composite film comprises a Bi0.96-xSr0.04RExFe0.94Mn0.04Cr0.02O3 crystalline state film and a NiFe2O4 crystalline state film which are compounded together. The preparation method comprises the following steps: respectively preparing a Bi0.96-xSr0.04RExFe0.94Mn0.04Cr0.02O3 precursor solution and a NiFe2O4 precursor solution; and spinning on a substrate to prepare a multilayer NiFe2O4 film, and spinning on the NiFe2O4 film to prepare a multilayer Bi0.96-xSr0.04RExFe0.94Mn0.04Cr0.02O3 film, thereby obtaining the target product. The equipment requirement is simple, the prepared film is high in uniformity, the doping amount is easy to control, and the ferroelectric properties and ferromagnetic properties of the film are greatly improved. Meanwhile, the leakage current density of the film is effectively reduced.

Description

technical field [0001] The invention belongs to the field of materials and relates to multiferroic Bi 0.96-x Sr 0.04 RE x Fe 0.94 mn 0.04 Cr 0.02 o 3 -NiFe 2 o 4 Composite membrane and method for its preparation. Background technique [0002] In recent years, BiFeO 3 As a new type of ferromagnetoelectric material, it has ferroelectricity and antiferromagnetism, accompanied by weak ferromagnetism, which has attracted great interest. BiFeO 3 Simple perovskite structure with trigonal twist, ferroelectric order (TC = 810°C) and G-type antiferromagnetic order (TN = 380°C) at room temperature, is one of the few single-phase multiferroic materials . BiFeO 3 Magnetoelectric coupling is widely used in information storage, spintronic devices, information storage, image display, pyroelectric effect, uncooled infrared focal plane array, etc. However, pure phase BiFeO 3 There is a problem of large leakage conductance, which makes it impossible to obtain a saturated hystere...

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): C03C17/34
CPCC03C17/3411
Inventor 谈国强刘文龙任慧君夏傲
Owner SHAANXI UNIV OF SCI & TECH
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
Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com