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

A superlattice, bismuth ferrite technology, applied in the direction of coating, etc., to achieve the effect of simple equipment requirements, easy reaction, and low process temperature

Active Publication Date: 2019-05-17
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 0.89 Ho 0.08 Sr 0.03 Fe 0.96 mn 0.03 Ni 0.01 o 3 / Bi 0.89 Ho 0.08 Sr 0.03 Fe 0.95 mn 0.0 3 Ni 0.02 o 3 Related reports on superlattice thin films and their preparation methods

Method used

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

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Experimental program
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Effect test

Embodiment 1

[0032] Step 1: Using bismuth nitrate, holmium nitrate, strontium nitrate, iron nitrate, manganese acetate and nickel acetate as raw materials (excess 5% bismuth nitrate), the molar ratio is 0.94:0.08:0.03:0.96:0.03:0.01 in volume ratio In a 3:1 mixed solution of ethylene glycol methyl ether and acetic anhydride, a stable precursor A with a total metal ion concentration of 0.3 mol / L is obtained;

[0033] Using bismuth nitrate, holmium nitrate, strontium nitrate, iron nitrate, manganese acetate and nickel acetate as raw materials (excess 5% bismuth nitrate), the molar ratio is 0.94:0.08:0.03:0.95:0.03:0.02 and the volume ratio is 3: In the mixed solution of ethylene glycol methyl ether and acetic anhydride in 1, a stable precursor B with a total metal ion concentration of 0.3 mol / L is obtained;

[0034] Step 2: Clean the FTO / glass substrate, and then irradiate it under ultraviolet light until the surface of the FTO / glass substrate reaches atomic cleanliness, and then spin-coat the pr...

Embodiment 2

[0041] Step 1: Using bismuth nitrate, holmium nitrate, strontium nitrate, iron nitrate, manganese acetate and nickel acetate as raw materials (excess 5% bismuth nitrate), the molar ratio is 0.94:0.08:0.03:0.96:0.03:0.01 in volume ratio In a 1:1 mixed solution of ethylene glycol methyl ether and acetic anhydride, a stable precursor solution A with a total metal ion concentration of 0.1 mol / L is obtained;

[0042] Using bismuth nitrate, holmium nitrate, strontium nitrate, ferric nitrate, manganese acetate and nickel acetate as raw materials (excess 5% bismuth nitrate), the molar ratio is 0.94:0.08:0.03:0.95:0.03:0.02 and the volume ratio is 1: 1. In the mixed solution of ethylene glycol methyl ether and acetic anhydride, a stable precursor B with a total concentration of metal ions of 0.1 mol / L is obtained;

[0043] Step 2: Clean the FTO / glass substrate, and then irradiate it under ultraviolet light until the surface of the FTO / glass substrate reaches atomic cleanliness, and then spi...

Embodiment 3

[0047] Step 1: Using bismuth nitrate, holmium nitrate, strontium nitrate, iron nitrate, manganese acetate and nickel acetate as raw materials (excess 5% bismuth nitrate), the molar ratio is 0.94:0.08:0.03:0.96:0.03:0.01 in volume ratio In a 2:1 mixed solution of ethylene glycol methyl ether and acetic anhydride, a stable precursor solution A with a total metal ion concentration of 0.2 mol / L is obtained;

[0048] Using bismuth nitrate, holmium nitrate, strontium nitrate, iron nitrate, manganese acetate and nickel acetate as raw materials (excess 5% bismuth nitrate), the molar ratio is 0.94:0.08:0.03:0.95:0.03:0.02 and the volume ratio is 2: 1. In the mixed solution of ethylene glycol methyl ether and acetic anhydride, a stable precursor B with a total metal ion concentration of 0.2 mol / L is obtained;

[0049] Step 2: Clean the FTO / glass substrate, and then irradiate it under ultraviolet light until the surface of the FTO / glass substrate reaches atomic cleanliness, and then spin-coat...

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Abstract

The invention provides a HoSrMnNi codoped bismuth ferrite superlattice film and a making method thereof. The Bi0.89Ho0.08Sr0.03Fe0.96Mn0.03Ni0.01O3 / Bi0.89Ho0.08Sr0.03Fe0.95Mn0.03Ni0.02O3 superlattice film is made from a different elements doped bismuth ferrite film with the crystal structure being a trigonal crystal structure and with the space group of R3c:H and R3m:R which coexist. The method which adopts a sol-gel process and spin coating and layer-by-layer annealing technologies has the advantages of simple device requirements, suitableness for making a film on a large surface and a surface with an irregular shape, accurate and controllable chemical components, and improvement of the multiferroic performance of the BiFeO3 film.

Description

Technical field [0001] The invention belongs to the field of functional materials, and relates to the preparation of a HoSrMnNi co-doped bismuth ferrite superlattice film on the surface of a functionalized FTO / glass substrate, specifically Bi 0.89 Ho 0.08 Sr 0.03 Fe 0.96 Mn 0.03 Ni 0.01 O 3 / Bi 0.89 Ho 0.08 Sr 0.03 Fe 0.95 Mn 0.03 Ni 0.02 O 3 Superlattice film. Background technique [0002] BiFeO 3 It is one of the few single-phase multi-iron materials. It has a twisted perovskite structure (belonging to the R3c point group). It is a rhombohedral structure that deviates from the ideal perovskite structure formed by the cubic structure stretched along the (111) direction , It has both ferroelectric order and antiferromagnetic order at room temperature, due to the higher ferroelectric phase transition temperature (Tc=1103K) and magnetic phase transition temperature (T N =643K), it has a wide range of application prospects in magnetoelectric sensors, spintronic devices, memory, etc. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C17/25C04B35/26C04B35/622
CPCC03C17/25C03C2217/24C03C2218/116C04B35/2633C04B35/62218C04B2235/3213C04B2235/3224C04B2235/3262C04B2235/3272C04B2235/3279C04B2235/3298C04B2235/606C04B2235/656C04B2235/6567C04B2235/6583C04B2235/94
Inventor 谈国强郭美佑杨玮刘云任慧君夏傲
Owner SHAANXI UNIV OF SCI & TECH
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