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Ternary layered MAX phase material with A site as magnetic element as well as preparation method and application thereof

A ternary layered, elemental technology, applied in the field of materials, can solve the problems that magnetic MAX phase materials have not yet been reported, the MAX phase structure is unstable, and the magnetic properties have not been discussed, achieving high damage tolerance, simple preparation methods, high The effect of heat conduction

Active Publication Date: 2018-11-30
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the magnetic properties of the magnetic element Fe at the A site have not been discussed, and the magnetic MAX phase materials with a binary composition at the A site have not been reported yet.
In addition, A-site doping or substitution of MAX phase materials for magnetic elements Ni / Co has not been reported. Previous theoretical predictions have shown that its possible occupation is M-site (but Co doping will lead to instability of the MAX phase structure)
[0005] Therefore, so far, there are few reports on MAX phase materials whose A-site elements are Fe / Co / Ni / Mn magnetic elements, and the A-site elements are ternary compositions (A=Ga, Au, Fe), and the magnetic properties have not been discussed. MAX phase materials with pure magnetic elements and binary components at the A site have not yet been reported. Therefore, the synthesis and discovery of magnetic MAX phase materials has become the direction that researchers in the industry have been working on for a long time.

Method used

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  • Ternary layered MAX phase material with A site as magnetic element as well as preparation method and application thereof
  • Ternary layered MAX phase material with A site as magnetic element as well as preparation method and application thereof
  • Ternary layered MAX phase material with A site as magnetic element as well as preparation method and application thereof

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Effect test

Embodiment 1

[0041] Embodiment 1: In this embodiment, the ternary layered MAX phase material whose A position is a magnetic element is V 2 (Sn z Fe 1-z ) C powder material.

[0042] The V 2 (Sn z Fe 1-z ) The preparation method of C powder is as follows:

[0043] (1) Weigh 1.2g of sodium chloride, 1.5g of potassium chloride, 1.53g of vanadium powder with a particle size of 10 μm, 0.24g of 300 mesh carbon powder, 1.3g of 300 mesh Sn powder, and 0.56g of 300 mesh iron powder, and grind the above materials Mix to get a mixture.

[0044] (2) Put the mixture in a corundum crucible and put it into a high-temperature tube furnace for reaction. The reaction conditions are: reaction temperature 1300° C., holding time 60 minutes, and inert atmosphere protection. After the temperature of the tube furnace dropped to room temperature, the reaction product in the crucible was taken out.

[0045] (3) Wash the reaction product with deionized water and alcohol: put the reaction product into a beak...

Embodiment 2

[0048] Embodiment 2: In this embodiment, the ternary layered MAX phase material whose A position is a magnetic element is V 2 (Sn z Fe 1-z ) C powder material.

[0049] The V 2 (Sn z Fe 1-z ) The preparation method of C powder is as follows:

[0050] (1) Weigh 2.4 g of sodium chloride, 3.1 g of potassium chloride, 1.26 g of vanadium carbide powder with a particle size of 10 μm, 1.3 g of 300 mesh Sn powder, and 0.34 g of 300 mesh iron powder, and grind and mix the above materials to obtain a mixture.

[0051] (2) Put the mixture in a corundum crucible and put it into a high-temperature tube furnace for reaction. The reaction conditions are: reaction temperature 900° C., holding time 420 minutes, and inert atmosphere protection. After the temperature of the tube furnace dropped to room temperature, the reaction product in the crucible was taken out.

[0052] (3) Wash the reaction product with deionized water and alcohol: put the reaction product into a beaker, add deioni...

Embodiment 3

[0056] Embodiment 3: In this embodiment, the ternary layered MAX phase material whose A position is a magnetic element is V 2 (Sn z Fe 1-z ) C bulk material.

[0057] The V 2 (Sn z Fe 1-z ) The preparation method of C block material is as follows:

[0058] (1) Weigh 1.26 g of vanadium carbide powder with a particle size of 10 μm, 1.3 g of 300-mesh Sn powder, and 1 g of 300-mesh iron powder, and grind and mix the above materials to obtain a powder mixture.

[0059] (2) Put the above powder mixture into a graphite mold, and then sinter by SPS. The sintering conditions are: 1100°C for 120min, heating rate of 100°C / min, argon protection, and pressure of 37MPa. After the reaction was over, the product was taken out.

[0060] (3) Remove the graphite paper on the surface of the obtained block, then polish it to a mirror surface with sandpaper of different meshes, put it in an oven at 100° C., and take it out for 12 hours to obtain a block material.

[0061] Image 6 It is t...

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Abstract

The invention discloses a ternary layered MAX phase material with A site as a magnetic element as well as a preparation method and an application thereof. The molecular formula of the ternary layeredMAX phase material is Mn+1 (AzA'1-z) Xn, wherein M is selected from any one or a group of any two kinds of IIIB, IVB, VB, and VIB; A is selected from any one or a group of any two kinds of IVA, VA andVIA; A' is a magnetic element; X is any one or a combination of any two of C and N elements; z is greater than 0 and less than 1; and n is 1, 2, 3 or 4. The ternary layered MAX phase material has a hexagonal crystal structure, and the space group is P63 / mmc; and the cells are formed by atomic alternate stacking of an Mn+1Xn unit and an (AxA'1-x) layer. The ternary layered MAX phase material withA site as the magnetic element has a potential application prospect in the fields of catalysis, wave absorption, spin electronics, energy storage, magnetic refrigeration or magnetic storage and the like.

Description

technical field [0001] The invention relates to a composite inorganic material, in particular to a novel ternary layered MAX phase material whose A-site is a magnetic element, a preparation method and application thereof, and belongs to the field of material technology. Background technique [0002] The phenomenon of giant magnetoresistance in nano-layered magnetic materials due to the exchange coupling in the magnetic multilayer film makes the material have huge potential applications in the fields of data storage, recording, refrigeration and electron spin, which has attracted scientists' attention. extensive attention. MAX phase materials are a kind of nano-layered ternary compounds, which have both metal and ceramic properties, and exhibit excellent physical, chemical, mechanical, electrical and other properties. Therefore, if a new magnetic MAX phase functional material is prepared, the combination of magnetic properties and other properties will make the new magnetic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F1/01H01F1/36H01F41/00
CPCH01F1/01H01F1/36H01F41/00
Inventor 黄庆李友兵李勉
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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