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Hydrothermal preparation method of pure-phase BaMnF4 powder nano-multiferroic material

A multi-ferrous material and powder technology, applied in the field of material chemistry, can solve the problems of easy agglomeration of particles and adverse effects on performance, and achieve the effects of not easy to agglomerate, low cost, and uniform particles

Inactive Publication Date: 2017-12-22
LIAONING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The queryable preparation methods of its powder usually require high temperature heating, which is very easy to produce BaF 2 and MnF 2 and other impurities, and the particles are easy to agglomerate, which will adversely affect its performance
In the existing hydrothermal preparation method report, BaF can still be seen in the XRD spectrum 2 Diffraction peaks, indicating that this preparation method still needs further improvement

Method used

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  • Hydrothermal preparation method of pure-phase BaMnF4 powder nano-multiferroic material
  • Hydrothermal preparation method of pure-phase BaMnF4 powder nano-multiferroic material
  • Hydrothermal preparation method of pure-phase BaMnF4 powder nano-multiferroic material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1 A kind of pure phase BaMnF 4 Hydrothermal preparation method of powder nanometer multiferroic materials

[0028] Including the following steps:

[0029] 1) Take 2.6132g Ba(NO 3 ) 2 and 2.09ml Mn(NO 3 ) 2 Dissolve in water to obtain nitrate mixture, and keep stirring at 50°C for 60min.

[0030] 2) Take 3.08g NH 4 HF 2 , added to the above-mentioned nitrate mixture, and kept stirring at 50°C for 120 minutes to obtain a suspension.

[0031] 3) Transfer the suspension obtained after stirring into a hydrothermal kettle, and continue to react at 250° C. for 100 h.

[0032] 4) Take out the sample in the hydrothermal kettle, and wash it three times by centrifugation with deionized water.

[0033] 5) Dry at 75°C for 24 hours to obtain a powder. figure 1 The detection pattern of the XRD of the sample prepared for Example 1. image 3 The SEM scanning electron microscope picture of the XRD of the sample prepared for Example 1.

Embodiment 2

[0034] Embodiment 2 A kind of pure phase BaMnF 4 Hydrothermal preparation method of powder nanometer multiferroic materials

[0035] Including the following steps:

[0036] 1) Take 2.6132g Ba(NO 3 ) 2 and 2.09ml Mn(NO 3 ) 2 Dissolve in water to obtain nitrate mixture, and keep stirring at 50°C for 60min.

[0037] 2) Take 3.08g NH 4 HF 2 Dissolve in water, immediately add to the above nitrate mixture, and keep stirring at 50°C for 120min to obtain a suspension.

[0038] 3) The suspension obtained after stirring was transferred into a hydrothermal kettle, and the reaction was continued at 200° C. for 80 h.

[0039] 4) Take out the sample in the hydrothermal kettle, and wash it three times by centrifugation with deionized water.

[0040] 5) Dry at 75°C for 24 hours to obtain a powder. figure 2 The detection pattern of the XRD of the sample prepared for Example 2. Figure 4 The SEM scanning electron microscope picture of the XRD of the sample prepared for Example 2. D...

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Abstract

The invention discloses a hydrothermal preparation method of a pure-phase BaMnF4 powder nano-multiferroic material. The method is used for preparing a pure-phase nano-multiferroic material BaMnF4 powder, thereby producing a powder having enhanced performances. The method particularly includes the steps of: 1) mixing and stirring Ba(NO3)2 and Mn(NO3)2 and adding NH4HF2 with stirring to form a turbid liquid; 2) performing a hydrothermal reaction to the turbid liquid in a hydrothermal kettle; 3) washing and drying the product to produce the nano-multiferroic material BaMnF4 powder. The method can greatly reduce the contents of impurities, such as BaF2 and MnF2, so that the powder has hardly any impure peaks in XRD detection. The method has gentle reaction conditions and generates uniform particles of the product. The powder can be used as a nano-luminous material substrate and has properties as a multifunctional material.

Description

technical field [0001] The invention belongs to the field of material chemistry, a pure phase BaMnF 4 Hydrothermal preparation method of powder nano multiferroic material. Background technique [0002] Currently, the fluoride multiferroic material BaMnF 4 Possessing good ferroelectricity and ferromagnetism has become a research hotspot in related fields. In addition, the small phonon energy, good transparency and extremely short cut-off wavelength have the potential to become a luminescent host material. The queryable preparation methods of its powder usually require high temperature heating, which is very easy to produce BaF 2 and MnF 2 and other impurities, and the particles are easy to agglomerate, which will adversely affect its performance. In the existing hydrothermal preparation method report, BaF can still be seen in the XRD spectrum 2 Diffraction peaks show that this preparation method still needs further improvement. Contents of the invention [0003] The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/61
CPCC09K11/616
Inventor 王绩伟徐攀峰赵鹏飞范晓星谭天亚卢雪梅高寒刘玉芬康大为李佳
Owner LIAONING UNIVERSITY