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

A technology of superlattice and bismuth ferrite, applied in the field of HoSrMnZn co-doped bismuth ferrite superlattice film and its preparation, to achieve the effect of easy reaction, low cost and low temperature

Active Publication Date: 2019-10-08
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 Zn 0.01 o 3 / Bi 0.89 Ho 0.08 Sr 0.03 Fe 0.95 mn 0.0 3 Zn 0.02 o 3 Related reports on superlattice thin films and their preparation methods

Method used

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

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Effect test

Embodiment 1

[0032] Step 1: Use bismuth nitrate, holmium nitrate, strontium nitrate, ferric nitrate, manganese acetate and zinc nitrate as raw materials (5% excess bismuth nitrate), the molar ratio is 0.94:0.08:0.03:0.96:0.03:0.01 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;

[0033] Using bismuth nitrate, holmium nitrate, strontium nitrate, ferric nitrate, manganese acetate and zinc nitrate as raw materials (5% excess bismuth nitrate), the molar ratio is 0.94:0.08:0.03:0.95:0.03:0.02 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;

[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 c...

Embodiment 2

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

[0042] Using bismuth nitrate, holmium nitrate, strontium nitrate, ferric nitrate, manganese acetate and zinc nitrate as raw materials (5% excess 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, obtain the stable precursor solution B that the total concentration of metal ions is 0.1mol / L;

[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...

Embodiment 3

[0047] Step 1: Use bismuth nitrate, holmium nitrate, strontium nitrate, ferric nitrate, manganese acetate and zinc nitrate as raw materials (5% excess bismuth nitrate), the molar ratio is 0.94:0.08:0.03:0.96:0.03:0.01 dissolved in volume ratio In the mixed solution of ethylene glycol methyl ether and acetic anhydride of 2:1, obtain the stable precursor solution A that the total concentration of metal ions is 0.2mol / L;

[0048] Using bismuth nitrate, holmium nitrate, strontium nitrate, iron nitrate, manganese acetate and zinc nitrate as raw materials (5% excess 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, obtain the stable precursor solution B that the total concentration of metal ions is 0.2mol / L;

[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 cle...

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Abstract

The invention provides a HoSrMnZn codoping bismuth ferrite superlattice film and a preparation method thereof. The concomitant element-doped bismuth ferrite film of which the crystal structure is the trigonal crystal structure and the space group is R3c:H and R3m:R is used for preparing the Bi0.89Ho0.08Sr0.03Fe0.96Mn0.03Zn0.01O3 / Bi0.89Ho0.08Sr0.03Fe0.95Mn0.03Zn0.02O3 superlattice film, namely the HoSrMnZn codoping bismuth ferrite superlattice film. A sol gel technology is used, and a spin-coating and layer-to-layer annealing method is used. The device requirement is simple. The preparation method is suitable for preparing the film on the large surface and the surfaces with the irregular shapes, and the chemical components can be accurately controlled. The multiferroic property of the BiFeO3 film can be improved.

Description

technical field [0001] The invention belongs to the field of functional materials, and relates to the preparation of a HoSrMnZn 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 Zn 0.01 o 3 / Bi 0.89 Ho 0.08 Sr 0.03 Fe 0.95 mn 0.03 Zn 0.02 o 3 superlattice film. Background technique [0002] BiFeO 3 It is one of the few single-phase multiferroic materials with a twisted perovskite structure (belonging to the R3c point group), and a skewed hexagonal structure that deviates from the ideal perovskite structure formed by stretching the cubic structure along the (111) direction , 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 wide application prospects in magnetoelectric sensors, spintronic devices, memo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C17/34C04B35/40C04B35/622
Inventor 谈国强郭美佑杨玮刘云任慧君夏傲
Owner SHAANXI UNIV OF SCI & TECH
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