Bi0.92Ho0.08Fe0.97Mn0.03O3-Zn1-xNixFe2O4 multiferroic composite film and preparation method thereof

A zn1-xnixfe2o4, composite film technology, applied in the field of functional materials, can solve the problems of difficult to obtain hysteresis loops, limit the application of BFO, and easily generate vacancies, etc., and achieve the effect of aggravating structural distortion, improving ferromagnetism, and reducing content

Inactive Publication Date: 2015-04-01
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the preparation process of BFO, due to the volatility of Bi and the fluctuation of the valence state of Fe, it is easy to generate vacancies and defects, which

Method used

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  • Bi0.92Ho0.08Fe0.97Mn0.03O3-Zn1-xNixFe2O4 multiferroic composite film and preparation method thereof
  • Bi0.92Ho0.08Fe0.97Mn0.03O3-Zn1-xNixFe2O4 multiferroic composite film and preparation method thereof
  • Bi0.92Ho0.08Fe0.97Mn0.03O3-Zn1-xNixFe2O4 multiferroic composite film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Step 1, zinc nitrate and ferric nitrate are dissolved in ethylene glycol methyl ether at a molar ratio of 1:2, after stirring for 30 minutes, acetic anhydride is added to obtain a stable ZnFe with a Fe ion concentration of 0.15mol / L 2 o 4 Precursor, ZnFe 2 o 4 The volume ratio of ethylene glycol methyl ether and acetic anhydride in the precursor solution is 3:1;

[0034] Step 2, bismuth nitrate, holmium nitrate, ferric nitrate and manganese nitrate are dissolved in the solvent (excessive 5% of bismuth nitrate) in a molar ratio of 0.92:0.08:0.97:0.03 to obtain a stable metal ion total concentration of 0.3mol / L Bi 0.92 Ho 0.08 Fe 0.97 mn 0.03 o 3 Precursor solution; wherein the solvent is a mixed solution of ethylene glycol methyl ether and acetic anhydride in a volume ratio of 3:1;

[0035] Step 3, choose the FTO / glass substrate as the substrate, place the cut FTO / glass substrate in detergent, acetone, and ethanol in sequence for ultrasonic cleaning, rinse the su...

Embodiment 2

[0041] In step 1, zinc nitrate, nickel acetate and iron nitrate are dissolved in ethylene glycol methyl ether in a molar ratio of 0.75:0.25:2, and after stirring for 30 minutes, acetic anhydride is added to obtain a stable Fe ion concentration of 0.1mol / L. Zn 0.75 Ni 0.25 Fe 2 o 4 Precursor, Zn 0.75 Ni 0.25 Fe 2 o 4 The volume ratio of ethylene glycol methyl ether and acetic anhydride in the precursor solution is 3:1;

[0042] Step 2, dissolving bismuth nitrate, holmium nitrate, ferric nitrate and manganese nitrate in a molar ratio of 0.92:0.08:0.97:0.03 in a solvent (excessive 5% bismuth nitrate) to obtain a stable concentration of 0.2mol / L total metal ion concentration Bi 0.92 Ho 0.08 Fe 0.97 mn 0.03 o 3 Precursor solution; wherein the solvent is a mixed solution of ethylene glycol methyl ether and acetic anhydride in a volume ratio of 3:1;

[0043] Step 3, choose the FTO / glass substrate as the substrate, place the cut FTO / glass substrate in detergent, acetone, ...

Embodiment 3

[0048] Step 1, dissolving zinc nitrate, nickel acetate and iron nitrate in a molar ratio of 0.5:0.5:2 in ethylene glycol methyl ether, stirring for 30 minutes, then adding acetic anhydride to obtain a stable Fe ion concentration of 0.2mol / L Zn 0.5 Ni 0.5 Fe 2 o 4 Precursor, Zn 0.5 Ni 0.5 Fe 2 o 4 The volume ratio of ethylene glycol methyl ether and acetic anhydride in the precursor solution is 2.5:1;

[0049] Step 2, dissolving bismuth nitrate, holmium nitrate, ferric nitrate and manganese nitrate in a molar ratio of 0.92:0.08:0.97:0.03 in a solvent (excessive 5% bismuth nitrate) to obtain a stable concentration of 0.2mol / L total metal ion concentration Bi 0.92 Ho 0.08 Fe 0.97 mn 0.03 o 3 Precursor solution; wherein the solvent is a mixed solution of ethylene glycol methyl ether and acetic anhydride in a volume ratio of 2.5:1;

[0050] Step 3, choose the FTO / glass substrate as the substrate, place the cut FTO / glass substrate in detergent, acetone, and ethanol in s...

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Abstract

The invention discloses a Bi0.92Ho0.08Fe0.97Mn0.03O3-Zn1-xNixFe2O4 multiferroic composite film and a preparation method thereof. The composite film comprises a Bi0.92Ho0.08Fe0.97Mn0.03O3 crystalline film and a Zn1-xNixFe2O4 crystalline film, which are compounded together. The method comprises the following steps: firstly, respectively preparing a Bi0.92Ho0.08Fe0.97Mn0.03O3 polymeric precursor solution and a Zn1-xNixFe2O4 precursor solution during preparation; spinning on a substrate, and preparing a multi-layer Zn1-xNixFe2O4 film; and spinning on the Zn1-xNixFe2O4 film and preparing a multi-layer Bi0.92Ho0.08Fe0.97Mn0.03O3-Zn1-xNixFe2O4 film, so as to obtain a target product. The method disclosed by the invention is simple in demands on equipment; the prepared film is good in uniformity; the doping amount is easy to control; the ferroelectric properties and the ferromagnetic properties of the film are improved; and meanwhile, the leakage current density of the film is effectively reduced.

Description

technical field [0001] The invention belongs to the field of functional materials and relates to a Bi 0.92 Ho 0.08 Fe 0.97 mn 0.03 o 3 -Zn 1-x Ni x Fe 2 o 4 Multiferroic composite film and its preparation method. Background technique [0002] Multiferroic material BiFeO 3 (BFO), with simultaneous ferroelectric ordering at room temperature (T c =810℃), antiferromagnetic order (T N =370℃) and the magnetoelectric coupling effect, have extremely important application prospects in ferroelectric and ferromagnetic storage media, and may become a new type of memory material that combines the advantages of ferroelectric materials and ferromagnetic materials, so it has attracted much attention . BiFeO 3 It is a rhombohedral twisted perovskite structure with space group R3c. BiFeO 3 It offers great possibilities for applications in information storage, spintronics, multifunctional electronic devices, and magnetoelectric detectors. However, in the preparation process of ...

Claims

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Application Information

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IPC IPC(8): C03C17/34
Inventor 谈国强耶维任慧君夏傲
Owner SHAANXI UNIV OF SCI & TECH
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