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Single-phase multiferroic m-type lead ferrite ceramic material and preparation method thereof

A ceramic material and multiferroic technology, applied in the field of single-phase multiferroic M-type lead ferrite ceramic material and its preparation, can solve the problem of ferroelectric difficult saturation polarization, limited application, bismuth ferrite ferromagnetic Weak and other problems, to achieve the effect of good ferroelectricity and ferromagnetism, low equipment requirements, and uniform particle distribution

Inactive Publication Date: 2017-05-17
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the large leakage current of bismuth ferrite, it is difficult to saturate and polarize the ferroelectricity at room temperature, and the ferromagnetism of bismuth ferrite is very weak, which greatly limits its application.

Method used

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  • Single-phase multiferroic m-type lead ferrite ceramic material and preparation method thereof
  • Single-phase multiferroic m-type lead ferrite ceramic material and preparation method thereof
  • Single-phase multiferroic m-type lead ferrite ceramic material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0029]According to the Pb / Fe ratio of 1:9, weigh 0.5060g of lead acetate and 4.2381g of iron acetylacetonate and dissolve them in 15ml of glycerin, 120ml of alcohol and 50ml of acetone, and weigh polyethylene glycol (molecular weight: 20000) 1g to dissolve Reserve in 45ml of ammonia water. Mix and stir the obtained lead precursor solution and iron precursor solution for 6 to 8 hours, add the mixed solution of polyethylene glycol and ammonia water to the lead precursor solution and iron precursor solution, and fully mix at 70°C for a certain time. The obtained suspension solution was centrifuged, and the supernatant liquid was poured off. The centrifuged precipitate was dried in an oven at 80°C, and the dried precipitate was placed in a corundum crucible, and the temperature was raised from room temperature to 450°C, sinter at 450°C for 1h to remove organic matter, then continue to calcine in the calciner, increase the temperature at a rate of 16°C / min to 1000°C and continue s...

Embodiment 2

[0033] Be 1:9 according to Pb / Fe ratio and weigh lead acetate 0.5060g and iron acetylacetonate 4.2381g to be dissolved in 15ml glycerol and in the mixed solution of 120ml ethanol and 50ml acetone respectively, weigh polyethylene glycol (molecular weight: 20000) respectively 1g was dissolved in 45ml ammonia water for later use. Mix and stir the obtained lead precursor solution and iron precursor solution for 6 to 8 hours, add the mixed solution of polyethylene glycol and ammonia water to the lead precursor solution and iron precursor solution, and fully mix at 70°C for a certain time. Centrifuge the obtained suspension solution, pour off the supernatant, and put the centrifuged precipitate into an oven for drying. Place the dried precipitate in a corundum crucible, and raise the temperature from room temperature to 450 °C at a rate of 9 °C / min. ℃, sinter at 450°C for 1 hour to remove organic matter, then continue to calcine in the calciner, raise the temperature to 800°C at a ...

Embodiment 3

[0036] Be 1:9 according to Pb / Fe ratio and weigh lead acetate 0.5060g and iron acetylacetonate 4.2381g to be dissolved in 15ml glycerol and in the mixed solution of 120ml ethanol and 50ml acetone respectively, weigh polyethylene glycol (molecular weight: 20000) respectively 1g was dissolved in 45ml ammonia water for later use. Mix and stir the obtained lead precursor solution and iron precursor solution for 6 to 8 hours, add the mixed solution of polyethylene glycol and ammonia water to the lead precursor solution and iron precursor solution, and fully mix at 70°C for a certain time. Centrifuge the obtained suspension solution, pour off the supernatant, and place the centrifuged precipitate in an oven to dry at 80°C, and place the dried precipitate in a corundum crucible from room temperature to 450 at a rate of 9°C / min ℃, sintering at 450℃ for 1h to remove organic matter, then continue calcination in the calciner, increase the temperature to 800℃ at a rate of 16℃ / min and con...

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Abstract

The invention relates to a single-phase multiferroic M-type lead ferrite ceramic material and a preparation method thereof. The chemical formula of the single-phase multiferroic M-type lead ferrite ceramic material is PbFe12O19, a hexagonal crystal system; the space group is P63 / mmc; the molecular weight is 1181.2610; the single-phase multiferroic M-type lead ferrite ceramic material simultaneously has favorable ferroelectricity and ferromagnetism at room temperature, and is practical; the crystal particles of the single-phase multiferroic M-type lead ferrite ceramic material are distributed uniformly, the average crystal particle is 1-5mu m and the color of the crystal particles is dark red to red brown; and the single-phase M-type lead ferrite PbFe12O19 material which simultaneously has ferroelectricity and ferromagnetism is applied to the field of multiferroic. The single-phase multiferroic M-type lead ferrite ceramic material has the beneficial effects that the prepared M-type lead ferrite ceramic material has multiferroic and has good ferroelectricity and ferromagnetism at room temperature; the average particle size of the crystal particles is about 0.5-3mu m; and the particles are distributed uniformly.

Description

technical field [0001] The invention relates to a single-phase multiferroic M-type lead ferrite ceramic material and a preparation method thereof. Background technique [0002] Multiferroic materials integrate the properties of ferroelectricity, ferromagnetism and ferroelasticity, and have unique coupling effects between multiple fields (force, electricity, magnetism, heat and light), showing many important coupling properties, such as magnetic Electricity, piezoelectricity, pyroelectricity and piezomagnetic effects are important advanced functional materials. The coupling properties of these materials provide a great degree of freedom for device design, so that they can be developed into various sensors, transducers, drivers and information storage, which are used in aerospace, automotive industry, biology, medicine, information and other technical fields , has aroused widespread concern internationally. [0003] Hexagonal M-type lead ferrite with magnetoplumbite structur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/26C04B35/622
Inventor 谭国龙李威盛号号徐期树
Owner WUHAN UNIV OF TECH
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