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LaSrMnCo/GdSrMnCo codoped bismuth ferrite superlattice film and preparation method thereof

A technology of superlattice and bismuth ferrite, which is applied in the field of LaSrMnCo/GdSrMnCo co-doped bismuth ferrite superlattice film and its preparation, which achieves the effects of simple equipment requirements, easy reaction and low process temperature

Active Publication Date: 2017-09-08
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 0.85 La 0.12 Sr 0.03 Fe 0.94 mn 0.04 co 0.02 o 3 / Bi 0.85 Gd 0.12 Sr 0.03 Fe 0.94 mn 0.04 co 0.02 o 3 Related reports on superlattice thin films and their preparation methods

Method used

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  • LaSrMnCo/GdSrMnCo codoped bismuth ferrite superlattice film and preparation method thereof
  • LaSrMnCo/GdSrMnCo codoped 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, lanthanum nitrate, strontium nitrate, ferric nitrate, manganese acetate and cobalt nitrate as raw materials (5% excess bismuth nitrate), the molar ratio is 0.90:0.12:0.03:0.94:0.04:0.02 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 0.90:0.12:0.03:0.94:0.04:0.02 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 first, and then irradiate it under ultraviolet light to make the surface of the FTO / glass subst...

Embodiment 2

[0037] Step 1: Using bismuth nitrate, lanthanum nitrate, strontium nitrate, ferric nitrate, manganese acetate and cobalt nitrate as raw materials (5% excess bismuth nitrate), the molar ratio is 0.90:0.12:0.03:0.94:0.04:0.02 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 0.90:0.12:0.03:0.94:0.04:0.02 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 first, and then irradiate it under ultraviolet light to make the surface of the FTO / glass subst...

Embodiment 3

[0043] Step 1: Using bismuth nitrate, lanthanum nitrate, strontium nitrate, ferric nitrate, manganese acetate and cobalt nitrate as raw materials (5% excess bismuth nitrate), the molar ratio is 0.90:0.12:0.03:0.94:0.04:0.02 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, iron nitrate, manganese acetate and cobalt nitrate as raw materials (5% excess bismuth nitrate), the molar ratio is 0.90:0.12:0.03:0.94:0.04:0.02 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 first, and then irradiate it under ultraviolet light to make the surface of the FTO / glass substrate...

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Abstract

The invention provides an LaSrMnCo / GdSrMnCo codoped bismuth ferrite superlattice film and a preparation method thereof. A Bi0.85La0.12Sr0.03Fe0.94Mn0.04Co0.02O3 / Bi0.85Gd0.12Sr0.03Fe0.94Mn0.04Co0.02O3 superlattice film, namely the LaSrMnCo / GdSrMnCo codoped bismuth ferrite superlattice film, is prepared from bismuth ferrite films doped according to different elements, 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; chemical components are precise and controllable; nd 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 LaSrMnCo / GdSrMnCo co-doped bismuth ferrite superlattice film on the surface of a functionalized FTO / glass substrate, specifically Bi 0.85 La 0.12 Sr 0.03 Fe 0.94 mn 0.04 co 0.02 o 3 / Bi 0.85 Gd 0.12 Sr 0.03 Fe 0.94 mn 0.04 co 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 devi...

Claims

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Application Information

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Patent Type & Authority Applications(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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