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Preparation method for improving purity of YIG (Yttrium Iron Gallium) nanofibers

A nanofiber, purity technology, applied in the field of nanomaterials, to achieve the effect of improving fiber purity, uniform ion diffusion, and reducing hysteresis loss

Pending Publication Date: 2020-09-04
HUBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to obtain phase-pure YIG nanofibers during the experiment, but phase-pure YIG nanofibers have excellent magnetic properties, which drives us to find a way to obtain phase-pure YIG nanofibers

Method used

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  • Preparation method for improving purity of YIG (Yttrium Iron Gallium) nanofibers
  • Preparation method for improving purity of YIG (Yttrium Iron Gallium) nanofibers
  • Preparation method for improving purity of YIG (Yttrium Iron Gallium) nanofibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment one (change iron ion consumption)

[0031] 1. Configure YIG precursor solution

[0032] Take four glass bottles with a capacity of 30ml, numbered A, B, C, D, and weigh 1.8386g Y(NO 3 ) 3 ·6H 2 O four parts and 3.2979g, 3.3g, 3.6277g and 3.6936g Fe (NO 3 ) 3 9H 2 O was added to the glass bottle, and then 4ml of deionized water was added to it, and magnetically stirred for 30 minutes until it was completely dissolved, and four bottles of YIG aqueous solution were prepared into A, B, C, and D; another empty bottle was taken, and 1.6g of PVP was taken and 16ml of ethanol were added to it, and magnetically stirred for 1 hour until it was completely dissolved; respectively, 4ml of ethanol solution of PVP was taken and added dropwise to the aqueous solution of YIG while stirring. After the solution was mixed evenly, continue to stir for 30 minutes; The solute is dispersed evenly, and after standing for a period of time, a uniform and stable precursor solution ...

Embodiment 2

[0042] Embodiment two (change the annealing temperature holding time)

[0043] 1. Configure YIG precursor solution

[0044] Take a glass bottle with a capacity of 30ml, weigh 1.8386g Y(NO 3 ) 3 ·6H 2 O and 3.6277g Fe(NO 3 )3 9H 2 O was added to a glass bottle, and then 4ml of deionized water was added to it, and magnetically stirred for 30min until it was completely dissolved to obtain an aqueous solution of YIG; another empty bottle was taken, and 0.4g of PVP and 4ml of ethanol were added to it, and magnetically stirred for 1h. Until it is completely dissolved, the ethanol solution of PVP is obtained; the ethanol solution of PVP is added dropwise to the aqueous solution of YIG while stirring, and after the solution is mixed evenly, continue to stir for 30 minutes; After a period of time, a homogeneous and stable precursor solution with a certain viscosity was obtained.

[0045] 2. Electrospinning process

[0046] Transfer the prepared precursor solution to a 10ml syrin...

Embodiment 3

[0052] Embodiment three (change sintering temperature)

[0053] 1. Configure YIG precursor solution

[0054] Take a glass bottle with a capacity of 30ml, weigh 1.8386g Y(NO 3 ) 3 ·6H 2 O and 3.6607g Fe(NO 3 ) 3 9H 2 O was added to a glass bottle, and then 4ml of deionized water was added to it, and magnetically stirred for 30min until it was completely dissolved to obtain an aqueous solution of YIG; another empty bottle was taken, and 0.4g of PVP and 4ml of ethanol were added to it, and magnetically stirred for 1h. Until it is completely dissolved, the ethanol solution of PVP is obtained; the ethanol solution of PVP is added dropwise to the aqueous solution of YIG while stirring, and after the solution is mixed evenly, continue to stir for 30 minutes; After a period of time, a homogeneous and stable precursor solution with a certain viscosity was obtained.

[0055] 2. Electrospinning process

[0056] Transfer the prepared precursor solution to a 10ml syringe, and remov...

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Abstract

The invention relates to a preparation method for improving phase purity of YIG (Yttrium Iron Gallium) nanofibers. The preparation method is mainly used for eliminating impure phases generated in thepreparation process of the YIG nanofibers by increasing the use amount (10-12%) of iron ions, increasing the sintering temperature (900-1100 DEG C) and prolonging the heat preservation time (2-10 hours), and the phase purity of the YIG nanofibers can be effectively improved, wherein a YFeO3 impure phase generated in the preparation process of the YIG nanofibers is eliminated by increasing the useamount of iron ions. The chemical reaction for synthesizing YIG has two processes: firstly, YFeO3 is synthesized from Fe2O3 and Y2O3; then YFeO3 continues to react with Fe2O3 to synthesize YIG, the amount of iron ions is increased, YFeO3 can continue to react to generate YIG, and therefore the fiber purity is improved. By improving the sintering temperature and the heat preservation time, ions inthe sintering process are uniformly diffused, and YFeO3 and Fe3O4 impure phases generated due to insufficient reaction are eliminated. According to the method, the purity of the YIG nanofibers can beobviously improved, and the purposes of improving the gyromagnetic effect and reducing hysteresis loss are achieved.

Description

technical field [0001] The invention relates to the field of nanometer materials, in particular to a preparation method of high-purity YIG nanofibers. Background technique [0002] One-dimensional nanomaterials, such as nanowires, nanotubes, nanoribbons, and nanocables, have attracted great attention in recent years due to their unique physical and chemical properties and broad application prospects. Nanofiber refers to a linear material with two dimensions in the nanoscale on the three-dimensional space scale of the material, usually with a diameter of nanoscale and a large length. It mainly includes nanowires, nanorods, nanotubes, nanoribbons, and nanocables. Since the diameter of the nanofiber is reduced to the nanometer level, it shows a series of strange properties. The biggest feature of nanofibers is their large specific surface area, which increases their surface energy and surface activity, resulting in small size effects, surface or interface effects, and quantum...

Claims

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Application Information

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IPC IPC(8): D01F9/08C01G49/00B82Y40/00
CPCD01F9/08C01G49/0054B82Y40/00
Inventor 祁亚军杜鹏程刘楠楠周鹏章天金
Owner HUBEI UNIV
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