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Multi-iron composite material and method for preparing flexible multi-iron composite material

A composite material and adhesive technology, which is applied in the field of multiferroic composite materials and the preparation of flexible multiferroic composite materials, can solve the problems that natural multiferroic materials are not widely used, and achieve the effect of improving magnetic properties and reducing sintering temperature

Inactive Publication Date: 2019-04-23
RES & DEV INST OF NORTHWESTERN POLYTECHNICAL UNIV IN SHENZHEN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For multiferroic materials with practical application value, the Curie temperature and Neel temperature must be higher than room temperature, so the application of natural multiferroic materials is not very wide

Method used

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  • Multi-iron composite material and method for preparing flexible multi-iron composite material
  • Multi-iron composite material and method for preparing flexible multi-iron composite material
  • Multi-iron composite material and method for preparing flexible multi-iron composite material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1 steps are as follows:

[0028] 1. La 0.5 Y 0.5 FeO 3 Preparation of oxide powder and bulk materials:

[0029] (1) Take out an appropriate amount of lanthanum trioxide (La 2 o 3 ), Yttrium trioxide (Y 2 o 3 ), ferric oxide (Fe 2 o 3 ), and pre-fired them at 900°C, 650°C, and 400°C for 12 hours to remove moisture and impurities in the raw materials. After the pre-burning is completed, quickly weigh lanthanum trioxide (La 2 o 3 ), this is mainly because lanthanum trioxide is easy to absorb water and thus affects its purity and quality. Then according to the molar ratio of 1:1:2, according to the weighed lanthanum trioxide (La2 o 3 ) to weigh diyttrium trioxide (Y 2 o 3 ) and ferric oxide (Fe 2 o 3 );

[0030] (2) Mix the oxide raw materials weighed in the first step and put them into the agate jar. According to the ratio of powder, ethanol and agate beads 1:1.5:6, add an appropriate amount of ethanol, and then put them in different sizes. Aga...

Embodiment 2

[0035] Embodiment 2 steps are as follows:

[0036] 1. La 0.5 Y 0.5 FeO 3 Preparation of oxide powder and bulk materials:

[0037] (1) Take out an appropriate amount of lanthanum trioxide (La 2 o 3 ), Yttrium trioxide (Y 2 o 3 ), ferric oxide (Fe 2 o 3 ), and pre-fired them at 1000°C, 700°C, and 500°C for 12 hours to remove moisture and impurities in the raw materials. After the pre-burning is completed, quickly weigh lanthanum trioxide (La 2 o 3 ), this is mainly because lanthanum trioxide is easy to absorb water and thus affects its purity and quality. Then according to the molar ratio of 1:1:2, according to the weighed lanthanum trioxide (La 2 o 3 ) to weigh diyttrium trioxide (Y 2 o 3 ) and ferric oxide (Fe 2 o 3 );

[0038] (2) Mix the oxide raw materials weighed in the first step and put them into the agate jar. According to the ratio of powder, ethanol and agate beads 1:1.5:6, add an appropriate amount of ethanol, and then put them in different sizes. ...

Embodiment 3

[0043] Embodiment 3 steps are as follows:

[0044] 1. La 0.5 Y 0.5 FeO 3 Preparation of oxide powder and bulk materials:

[0045] (1) Take out an appropriate amount of lanthanum trioxide (La 2 o 3 ), Yttrium trioxide (Y 2 o 3 ), ferric oxide (Fe 2 o 3 ), and pre-fired them at 950°C, 700°C, and 450°C for 12 hours to remove moisture and impurities in the raw materials. After the pre-burning is completed, quickly weigh lanthanum trioxide (La 2 o 3 ), this is mainly because lanthanum trioxide is easy to absorb water and thus affects its purity and quality. Then according to the molar ratio of 1:1:2, according to the weighed lanthanum trioxide (La 2 o 3 ) to weigh diyttrium trioxide (Y 2 o 3 ) and ferric oxide (Fe 2 o 3 );

[0046] (2) Mix the oxide raw materials weighed in the first step and put them into the agate jar. According to the ratio of powder, ethanol and agate beads 1:1.5:6, add an appropriate amount of ethanol, and then put them in different sizes. A...

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Abstract

The invention relates to a multi-iron composite material and a method for preparing the flexible multi-iron composite material. Two single oxide powder La0.5Y0.5FeO3 and LaY2Fe5O12 is mixed accordingto a molar ratio of 9: 1 by using a solid-phase sintering method, and an obtained multi-iron composite material is (La0.5Y0.5FeO3)0.9(LaY2Fe5O12)0.1. The flexible material is prepared by using adhesive. By doping the rare-earth La element, the magnetism of the flexible multi-iron composite material is improved, and the sintering temperature is reduced. By testing the physical properties of the flexible multi-iron composite material, the flexible material also has the ferroelectricity and ferromagnetism.

Description

technical field [0001] The invention belongs to a multiferroic composite material and a preparation method thereof, and relates to a multiferroic composite material and a method for preparing a flexible multiferroic composite material. Background technique [0002] Multiferroic materials (Multiferroic materials) refer to the basic properties of two or more types of iron in the material. The basic properties of these irons include ferroelectricity (antiferroelectricity), ferromagnetism (antiferromagnetism, ferrimagnetism) And ferroelasticity, is a multifunctional material that combines electric and magnetic properties, especially a magnetoelectric composite material with both ferroelectricity and ferromagnetism, which can control electric polarization through a magnetic field or magnetic polarization through an electric field. Extremely broad application prospects. Multiferroic materials include single-phase multiferroic color materials and composite multiferroic materials. ...

Claims

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Application Information

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IPC IPC(8): C04B35/40C04B35/622C04B35/626C04B26/08C04B14/36
CPCC04B14/363C04B26/04C04B35/2675C04B35/622C04B35/6261C04B35/62675C04B2235/3225C04B2235/3227C04B2235/656C04B2235/6567
Inventor 白晓军曹崇德汪姚岑
Owner RES & DEV INST OF NORTHWESTERN POLYTECHNICAL UNIV IN SHENZHEN
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