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Novel fe-doped srbi 2 nb 2 o 9 Multiferroic ceramic material with Oliveris structure and preparation method thereof

A technology of multiferroic ceramics and doping amount, applied in the field of multiferroic ceramic materials, to achieve the effects of excellent magnetic properties, cost saving, and avoiding the addition of binders

Active Publication Date: 2020-04-07
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Multiferroic materials have important scientific connotations and great application prospects. It includes many scientific issues such as ferromagnetism, ferroelectricity, and ferroelasticity, and involves transition metal oxides, as well as spin order, charge order, orbital order, Multi-scale issues such as quantum control and domain engineering. Although there is no unified understanding of the definition of multiferroics in the academic community, multiferroics is an interdisciplinary and very popular frontier research field.

Method used

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  • Novel fe-doped srbi <sub>2</sub> nb <sub>2</sub> o <sub>9</sub> Multiferroic ceramic material with Oliveris structure and preparation method thereof
  • Novel fe-doped srbi <sub>2</sub> nb <sub>2</sub> o <sub>9</sub> Multiferroic ceramic material with Oliveris structure and preparation method thereof
  • Novel fe-doped srbi <sub>2</sub> nb <sub>2</sub> o <sub>9</sub> Multiferroic ceramic material with Oliveris structure and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0034] The chemical formula of the single-phase multiferroic ceramic material is: SrBi 2 Nb 2-x Fe x o 9-2x ,in x Indicates mole percentage, and x=0.

[0035] The aforementioned Fe-doped SrBi 2 Nb 2 o 9 The preparation method of multiferroic ceramic material comprises the following steps:

[0036] (1) According to the chemical formula SrBi 2 Nb 2-x Fe x o 9-2x (x=0) will analyze pure SrCO 3 、 Bi 2 o 3 , Nb 2 o 5 and Fe 2 o 3 After preparation, it is uniformly mixed by ball milling, then dried, sieved, and then pre-calcined to obtain a block solid;

[0037] (2) After pulverizing the blocky solid, ball milling is carried out again, and the product is sieved to obtain SrBi with uniform size 2 Nb 2 o 9 Powder;

[0038] (3) will get SrBi 2 Nb 2 o 9 The powder is weighed at a mass of 0.4g per portion, then poured into the mold, and a force of 600N is applied to demould the formed disc to obtain a sample with a good shape;

[0039] (4) Place the wafer in the...

Embodiment 2

[0047] The chemical formula of the single-phase multiferroic ceramic material is: SrBi 2 Nb 2-x Fe x o 9-2x ,in x Indicates mole percentage, and x=0.1.

[0048] The aforementioned Fe-doped SrBi 2 Nb 2 o 9 The preparation method of multiferroic ceramic material comprises the following steps:

[0049] (1) According to the chemical formula SrBi 2 Nb 2-x Fe x o 9-2x (x=0.1) will analyze pure SrCO 3 、 Bi 2 o 3 , Nb 2 o 5 and Fe 2 o 3 After preparation, it is uniformly mixed by ball milling, then dried, sieved, and then pre-calcined to obtain a block solid;

[0050] (2) After pulverizing the blocky solid, ball milling is carried out again, and the product is sieved to obtain SrBi with uniform size 2 Nb 1.9 Fe 0.1 o 8.8 Powder;

[0051] (3) will get SrBi 2 Nb 1.9 Fe 0.1 o 8.8 The powder is weighed at a mass of 0.4g per portion, then poured into the mold, and a force of 600N is applied to demould the formed disc to obtain a sample with a good shape;

[0052...

Embodiment 3

[0060] The chemical formula of the single-phase multiferroic ceramic material is: SrBi 2 Nb 2-x Fe x o 9-2x , where x represents the mole percentage, and x=0.2.

[0061] The aforementioned Fe-doped SrBi 2 Nb 2 o 9 The preparation method of multiferroic ceramic material comprises the following steps:

[0062] (1) According to the chemical formula SrBi 2 Nb 2-x Fe x o 9-2x (x=0.2) will analyze pure SrCO 3 、 Bi 2 o 3 , Nb 2 o 5 and Fe 2 o 3 After preparation, it is uniformly mixed by ball milling, then dried, sieved, and then pre-calcined to obtain a block solid;

[0063] (2) After pulverizing the blocky solid, ball milling is carried out again, and the product is sieved to obtain SrBi with uniform size 2 Nb 1.8 Fe 0.2 o 8.6 Powder;

[0064] (3) will get SrBi 2 Nb 1.8 Fe 0.2 o 8.6 The powder is weighed at a mass of 0.4g per portion, then poured into the mold, and a force of 600N is applied to demould the formed disc to obtain a sample with a good shape; ...

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Abstract

The invention discloses a novel Fe-doped SrBi2Nb2O9 multiferroic ceramic material with an Aurivillius structure, and further discloses a preparation method of the ceramic material. The method comprises the following steps of preparing by respectively adopting SrCO3, Bi2O3, Nb2O5 and Fe2O3 as raw materials; carrying out ball-milling, pre-sintering, sieving and molding on powder, and finally sintering at the temperature of 920-1,215 DEG C to obtain a single-phase multiferroic ceramic material with the Aurivillius structure. The SrBi2Nb2-xFexO9-2x single phase multiferroic Aurivillius compound ceramic material prepared by the method is simple in process and low in raw material cost and manufacturing cost, at room temperature, a ferroelectric hysteresis loop and a hysteresis loop can be obtained, and the material has a certain antiferromagnetic property on the basis of retaining material ferroelectricity.

Description

technical field [0001] The invention belongs to the technical field of multiferroic ceramic materials, and relates to a novel Fe-doped SrBi 2 Nb 2 o 9 Multiferroic ceramic material with Oliveris structure and preparation method thereof. Background technique [0002] With the continuous development of information technology and the miniaturization and multifunctionalization of devices, people's research interest in multifunctional materials integrating ferroelectricity and magnetism is constantly increasing. Multiferroic materials have important scientific connotations and great application prospects. It includes many scientific issues such as ferromagnetism, ferroelectricity, and ferroelasticity, and involves transition metal oxides, as well as spin order, charge order, orbital order, Multi-scale issues such as quantum control and domain engineering, although there is no unified understanding of the definition of multiferroics in the academic community, multiferroics is a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/453C04B35/622C04B35/638C04B41/88
CPCC04B35/453C04B35/622C04B35/638C04B41/5116C04B41/88C04B2235/3213C04B2235/3251C04B2235/3272C04B2235/6562C04B2235/6565C04B2235/6567C04B41/4535C04B41/0072
Inventor 蒲永平师裕张倩雯王雯彭鑫张磊
Owner SHAANXI UNIV OF SCI & TECH
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