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Multiferroic Bi0.83Pr0.15Sr0.02Fe0.97-xMn0.03CuxO3-CuFe2O4 composite film and preparation method thereof

A technology of bi0.83pr0.15sr0.02fe0.97-xmn0.03cuxo3-cufe2o4 and composite film is applied in the direction of coating to achieve the effects of improving ferroelectric and ferromagnetic properties, suppressing volatilization, and reducing leakage current density

Active Publication Date: 2016-08-31
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, it has not been seen that doping Pr and Sr on the A site, doping Mn, Cu on the B site, and magnetic thin film CuFe 2 o 4 Composite method to prepare Bi 0.83 PR 0.15 Sr 0.02 Fe 0.97-x mn 0.03 Cu x o 3 -CuFe 2 o 4 Composite films to improve BiFeO 3 Reports on various properties of thin films

Method used

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  • Multiferroic Bi0.83Pr0.15Sr0.02Fe0.97-xMn0.03CuxO3-CuFe2O4 composite film and preparation method thereof
  • Multiferroic Bi0.83Pr0.15Sr0.02Fe0.97-xMn0.03CuxO3-CuFe2O4 composite film and preparation method thereof
  • Multiferroic Bi0.83Pr0.15Sr0.02Fe0.97-xMn0.03CuxO3-CuFe2O4 composite film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Step 1: Dissolve ferric nitrate and copper nitrate in ethylene glycol methyl ether at a molar ratio of 1:2, stir for 30 minutes, then add acetic anhydride and stir for 90 minutes to obtain stable CuFe with a Cu ion concentration of 0.15mol / L 2 o 4 Precursor, CuFe 2 o 4 The volume ratio of ethylene glycol methyl ether and acetic anhydride in the precursor solution is 3:1;

[0040] Step 2: Dissolve bismuth nitrate, praseodymium nitrate, strontium nitrate, ferric nitrate, manganese nitrate and copper nitrate in a solvent in a molar ratio of 0.88:0.15:0.02:0.96:0.03:0.01 (x=0.01, 5% bismuth nitrate excess ), to obtain a stable Bi with a total concentration of metal ions of 0.25mol / L 0.83 PR 0.15 Sr 0.02 Fe 0.96 mn 0.03 Cu 0.01 o 3 Precursor solution; the solvent is a mixed solution of ethylene glycol methyl ether and acetic anhydride with a volume ratio of 3:1;

[0041] Step 3: Select the FTO / glass substrate, place the cut FTO / glass substrate in detergent, acetone...

Embodiment 2

[0047]Step 1: Dissolve ferric nitrate and copper nitrate in ethylene glycol methyl ether at a molar ratio of 1:2, stir for 30 minutes, then add acetic anhydride and stir for 90 minutes to obtain stable CuFe with a Cu ion concentration of 0.15mol / L 2 o 4 Precursor, CuFe 2 o 4 The volume ratio of ethylene glycol methyl ether and acetic anhydride in the precursor solution is 3:1;

[0048] Step 2: Dissolve bismuth nitrate, praseodymium nitrate, strontium nitrate, ferric nitrate, manganese nitrate and copper nitrate in a solvent in a molar ratio of 0.88:0.15:0.02:0.95:0.03:0.02 (x=0.02, bismuth nitrate excess 5% ), to obtain a stable Bi with a total concentration of metal ions of 0.25mol / L 0.83 PR 0.15 Sr 0.02 Fe 0.95 mn 0.03 Cu 0.02 o 3 Precursor solution; the solvent is a mixed solution of ethylene glycol methyl ether and acetic anhydride with a volume ratio of 3:1;

[0049] Step 3: Select the FTO / glass substrate, place the cut FTO / glass substrate in detergent, acetone,...

Embodiment 3

[0055] Step 1: Dissolve ferric nitrate and copper nitrate in ethylene glycol methyl ether at a molar ratio of 1:2, stir for 30 minutes, then add acetic anhydride and stir for 90 minutes to obtain stable CuFe with a Cu ion concentration of 0.15mol / L 2 o 4 Precursor, CuFe 2 o 4 The volume ratio of ethylene glycol methyl ether and acetic anhydride in the precursor solution is 3:1;

[0056] Step 2: Dissolve bismuth nitrate, praseodymium nitrate, strontium nitrate, ferric nitrate, manganese nitrate and copper nitrate in a solvent in a molar ratio of 0.88:0.15:0.02:0.94:0.03:0.03 (x=0.03, bismuth nitrate excess 5% ), to obtain a stable Bi with a total concentration of metal ions of 0.25mol / L 0.83 PR 0.15 Sr 0.02 Fe 0.94 mn 0.03 Cu 0.03 o 3 Precursor solution; the solvent is a mixed solution of ethylene glycol methyl ether and acetic anhydride with a volume ratio of 3:1;

[0057] Step 3: Select the FTO / glass substrate, place the cut FTO / glass substrate in detergent, acetone...

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Abstract

The invention discloses a multiferroic Bi0.83Pr0.15Sr0.02Fe0.97-xMn0.03CuxO3-CuFe2O4 composite film and a preparation method thereof. The composite film comprises a Bi0.83Pr0.15Sr0.02Fe0.97-xMn0.03CuxO3 (x=0.01-0.05) crystalline film in the upper layer and a CuFe2O4 crystalline film in the lower layer. The preparation method comprises respectively preparing a Bi0.83Pr0.15Sr0.02Fe0.97-xMn0.03CuxO3 precursor solution and a CuFe2O4 precursor solution, carrying out spin-coating on a substrate with multiple CuFe2O4 films and carrying out spin-coating on the CuFe2O4 film with multiple Bi0.83Pr0.15Sr0.02Fe0.97-xMn0.03CuxO3 films to obtain the multiferroic Bi0.83Pr0.15Sr0.02Fe0.97-xMn0.03CuxO3-CuFe2O4 composite film. The preparation method has simple equipment requirements, can prepare the film with good uniformity, easily controls a doping amount, improves ferroelectric and ferromagnetic properties of the film and effectively reduces film leakage current density.

Description

technical field [0001] The invention belongs to the field of functional materials, and relates to a method for preparing a multiferroic composite film on the surface of a functionalized substrate, in particular to a multiferroic Bi 0.83 PR 0.15 Sr 0.02 Fe 0.97-x mn 0.03 Cu x o 3 -CuFe 2 o 4 Composite membrane and method for its preparation. Background technique [0002] BiFeO 3 It is a typical single-phase multiferroic material, and it is also a lead-free material with ferroelectricity and ferromagnetism. BiFeO 3 The magnetization (M) and electric polarization (P) of the magnetic field can be electromagnetically coupled, and a magnetic field can be induced by an electric field, and at the same time, the magnetic field can induce electric polarization, that is, the magnetoelectric effect. This has broad applications in the fields of microelectronics, optoelectronics, integrated optics, and microelectromechanical systems, and is currently a hot topic of research. ...

Claims

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Application Information

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IPC IPC(8): C03C17/34
CPCC03C17/3417C03C2217/70C03C2217/94C03C2218/116
Inventor 谈国强乐忠威晏霞任慧君夏傲
Owner SHAANXI UNIV OF SCI & TECH
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