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A kind of GDSRMNCO co-doped bismuth ferrite superlattice film and preparation method thereof

A superlattice and bismuth ferrite technology is applied in the field of GdSrMnCo co-doped bismuth ferrite superlattice thin film and its preparation, and achieves the effects of easy experimental conditions, low cost, and easy control of the preparation process and doping amount.

Active Publication Date: 2019-10-11
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Currently, there is no information about Bi 0.91 Gd 0.06 Sr 0.03 Fe 0.94 mn 0.04 co 0.02 o 3 / Bi 0.88 Gd 0.09 Sr 0.03 Fe 0.94 mn 0.0 4 co 0.02 o 3 Related reports on superlattice thin films and their preparation methods

Method used

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  • A kind of GDSRMNCO co-doped bismuth ferrite superlattice film and preparation method thereof
  • A kind of GDSRMNCO co-doped bismuth ferrite superlattice film and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0031] Step 1: Using bismuth nitrate, gadolinium nitrate, strontium nitrate, ferric nitrate, manganese acetate and cobalt nitrate as raw materials (5% excess bismuth nitrate), the molar ratio is 0.96:0.06:0.03:0.94:0.04:0.02 dissolved in volume ratio In the mixed solution of ethylene glycol methyl ether and acetic anhydride of 3.2:1, obtain the stable precursor solution A that the total concentration of metal ions is 0.2mol / L;

[0032] Using bismuth nitrate, gadolinium nitrate, strontium nitrate, iron nitrate, manganese acetate and cobalt nitrate as raw materials (5% excess bismuth nitrate), the molar ratio is 0.93:0.09:0.03:0.94:0.04:0.02 and the volume ratio is 3.2: 1 in the mixed solution of ethylene glycol methyl ether and acetic anhydride, obtain the stable precursor solution B that the total concentration of metal ions is 0.2mol / L;

[0033] Step 2: Clean the FTO / glass substrate, and then irradiate it under ultraviolet light to make the surface of the FTO / glass substrate ...

Embodiment 2

[0037] Step 1: Using bismuth nitrate, gadolinium nitrate, strontium nitrate, ferric nitrate, manganese acetate and cobalt nitrate as raw materials (5% excess bismuth nitrate), the molar ratio is 0.96:0.06:0.03:0.94:0.04:0.02 dissolved in volume ratio In the mixed solution of ethylene glycol methyl ether and acetic anhydride of 2.8:1, obtain the stable precursor liquid A that the total concentration of metal ions is 0.25mol / L;

[0038] Using bismuth nitrate, gadolinium nitrate, strontium nitrate, iron nitrate, manganese acetate and cobalt nitrate as raw materials (5% excess bismuth nitrate), the molar ratio is 0.93:0.09:0.03:0.94:0.04:0.02 and the volume ratio is 2.8: 1 in the mixed solution of ethylene glycol methyl ether and acetic anhydride, obtain the stable precursor solution B that the total concentration of metal ions is 0.25mol / L;

[0039] Step 2: Clean the FTO / glass substrate, and then irradiate it under ultraviolet light to make the surface of the FTO / glass substrate ...

Embodiment 3

[0043] Step 1: Using bismuth nitrate, gadolinium nitrate, strontium nitrate, ferric nitrate, manganese acetate and cobalt nitrate as raw materials (5% excess bismuth nitrate), the molar ratio is 0.96:0.06:0.03:0.94:0.04:0.02 dissolved in volume ratio In the mixed solution of ethylene glycol methyl ether and acetic anhydride of 3:1, obtain the stable precursor solution A that the total concentration of metal ions is 0.3mol / L;

[0044] Using bismuth nitrate, gadolinium nitrate, strontium nitrate, ferric nitrate, manganese acetate and cobalt nitrate as raw materials (5% excess bismuth nitrate), the molar ratio is 0.93:0.09:0.03:0.94:0.04:0.02 and the volume ratio is 3: 1 in the mixed solution of ethylene glycol methyl ether and acetic anhydride, obtain the stable precursor solution B that the total concentration of metal ions is 0.3mol / L;

[0045] Step 2: Clean the FTO / glass substrate, and then irradiate it under ultraviolet light to make the surface of the FTO / glass substrate re...

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Abstract

The invention provides a GdSrMnCo codoped bismuth ferrite superlattice film and a preparation method thereof. A Bi0.91Gd0.06Sr0.03Fe0.94Mn0.04Co0.02O3 / Bi0.88Gd0.09Sr0.03Fe0.94Mn0.04Co0.02O3 superlattice film, namely the GdSrMnCo codoped bismuth ferrite superlattice film, is prepared from bismuth ferrite films doped according to different Gd concentrations, wherein the crystal structures of the bismuth ferrite films are trigonal structures and the space groups thereof are in a coexistent state of R3c: H and R3m: R. In the preparation method, a sol-gel process is adopted, and a spin coating and layer-by-layer annealing method is adopted; equipment requirements are low; the preparation method is suitable for preparing films on large surfaces and irregularly-shaped surfaces; and chemical components are precise and controllable; the multi-ferrous performance of BiFeO3 films can be improved.

Description

technical field [0001] The invention belongs to the field of functional materials, and relates to the preparation of a GdSrMnCo co-doped bismuth ferrite superlattice film on the surface of a functionalized FTO / glass substrate, specifically Bi 0.91 Gd 0.06 Sr 0.03 Fe 0.94 mn 0.04 co 0.02 o 3 / Bi 0.88 Gd 0.09 Sr 0.03 Fe 0.94 mn 0.04 co 0.02 o 3 superlattice film. Background technique [0002] Multiferroic materials refer to materials that have two or more properties of ferroelectricity (antiferroelectricity), ferromagnetism (antiferromagnetism) and ferroelasticity (antiferroelasticity). In this kind of functional materials, not only have some of the above properties, but also the properties can be coupled and adjusted to each other, resulting in properties that a single ferroelectric or ferromagnetic material does not have, such as the magnetoelectric coupling effect. This unique property makes multiferroic materials have broad application prospects in magnetoele...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C17/34C04B35/40C04B35/622
Inventor 谈国强柴正军乐忠威薛敏涛任慧君夏傲
Owner SHAANXI UNIV OF SCI & TECH
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