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Preparation method of ferrite europium antiferromagnetic ceramics

An antiferromagnetic and ceramic technology, applied in antiferromagnetic materials, magnetic materials, magnetic objects, etc., to achieve the effects of low price, significant reduction, and strong activity

Inactive Publication Date: 2019-04-05
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention successfully solves the grain control problem of europium ferrite ferromagnetic electroceramics with perovskite structure

Method used

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  • Preparation method of ferrite europium antiferromagnetic ceramics
  • Preparation method of ferrite europium antiferromagnetic ceramics
  • Preparation method of ferrite europium antiferromagnetic ceramics

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Experimental program
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Embodiment 1

[0027] According to the formula, the chemical formula is EuFeO 3 Weigh raw materials, molecular weight 255.81, batching quality 50.00 grams; weigh required raw materials Fe 2 o 3 Mass is 15.638 grams, Eu 2 o 3 The mass is 34.397 grams.

[0028] The preparation method is:

[0029] Weigh Fe according to stoichiometric ratio 2 o 3 、Eu 2 o 3 After each powder raw material is placed in a ball mill jar, add an appropriate amount of distilled water as a solvent, and after 16 hours of planetary ball milling, it is at 100 o Dry in the drying box of C temperature for 24 hours, pulverize and pass through 80 mesh sieves, obtain the mixed powder of raw material;

[0030] The resulting mixed powder, through 900 o C, 6 hours low temperature and long time pre-synthesis of mixed powder precursor;

[0031] To the synthesized precursor powder, add PVA binder with a concentration of 5 wt% accounting for 15 wt% of the powder material, mix and pre-press, crush and grind through an 80-mes...

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Abstract

The invention relates to a preparation method of ferrite europium antiferromagnetic ceramics, and belongs to the field of antiferromagnetic ceramics grain regulation. The chemical formula of the ferrite europium ceramics is EuFeO3 (EF for short). In the preparation method, ball milling is adopted to prepare mixed raw material powder, and the mixed precursor is prepared by appropriate technology, the antiferromagnetic ceramics with uniform grain size of submicron scale are prepared by solid phase reaction method through appropriate method and process regulation, while the antiferromagnetism ofthe ceramics is not greatly reduced by reducing grain size. The preparation method has bright prospects due to a strong demonstration effect in the field of grain regulation. Meanwhile, the ferrite europium ceramics prepared by the preparation method in an energy-saving way have application prospects in some novel sensors, self-spining devices and electronic components such as random storage of information.

Description

technical field [0001] The invention relates to a method for preparing europium ferrite ceramics with submicron grain morphology, belonging to the field of antiferromagnetic ceramic grain control. Background technique [0002] According to relevant literature research, passive components and active devices (semiconductor products such as new sensors, spin devices and information random storage, integrated circuits) together constitute the core part of the circuit and are the basis of various electronic information products. In new electronic products, integrated circuits and passive components account for 46.1% and 9.1% of the total production cost of all electronic components and parts, but account for 12.7% and 55.1% of the total installation cost, and even some chips The management and installation costs of the traditional components have exceeded their price. It is not difficult to see that passive electronic components have become a bottleneck restricting the further d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/40C04B35/622C04B35/626H01F1/00
CPCC04B35/2675C04B35/622C04B35/62675C04B2235/6562C04B2235/6567C04B2235/786H01F1/0009
Inventor 李正法
Owner CHINA JILIANG UNIV
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