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Preparation method of two-dimensional single crystal PbTiO3-CoFe2O4 composite nano-material with strong magnetoelectric coupling effect

A pbtio3-cofe2o4, magnetoelectric coupling effect technology, applied in the growth of polycrystalline materials, nanotechnology for materials and surface science, single crystal growth, etc., can solve the problems of magnetoelectric coupling effect, complex interface effect, etc. Achieve the effects of easy control, low equipment requirements, and simple preparation methods

Active Publication Date: 2018-09-28
XUCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most of the one-dimensional multiferroic composite fiber nanostructures prepared at present are polycrystalline, and the interface effect is relatively complicated, which affects the optimization of the magnetoelectric coupling effect.

Method used

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  • Preparation method of two-dimensional single crystal PbTiO3-CoFe2O4 composite nano-material with strong magnetoelectric coupling effect
  • Preparation method of two-dimensional single crystal PbTiO3-CoFe2O4 composite nano-material with strong magnetoelectric coupling effect
  • Preparation method of two-dimensional single crystal PbTiO3-CoFe2O4 composite nano-material with strong magnetoelectric coupling effect

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Embodiment 1

[0022] A two-dimensional single crystal PbTiO with strong magnetoelectric coupling effect 3 -CoFe 2 o 4 A method for preparing a composite nanomaterial, comprising the steps of:

[0023] (1) First, dissolve cobalt nitrate hexahydrate and ferric chloride hexahydrate in water and stir for 15 minutes to obtain mixed solution I, wherein Co in mixed solution I 2+ ions and Fe 3+ The ratio of the amount of ion to substance is Co 2+ : Fe 3+ =2:1; Then, the mixed solution I was added to 10mL of 2mol / L sodium hydroxide aqueous solution, stirred for 10min, and the mixed solution II was obtained for use;

[0024] (2) Add 10 mL of 80 mmol / L sodium borohydride solution to the mixed solution II, stir for 10 min to obtain the suspension I, and set aside;

[0025] (3) The tetragonal perovskite PbTiO 3 Nanosheets were added to suspension I, stirred for 30 minutes, and ultrasonically dispersed for 20 minutes to obtain suspension II for use;

[0026](4) Transfer the suspension II to a 50m...

Embodiment 2

[0028] A two-dimensional single crystal PbTiO with strong magnetoelectric coupling effect 3 -CoFe 2 o 4 A method for preparing a composite nanomaterial, comprising the steps of:

[0029] (1) First, dissolve cobalt nitrate hexahydrate and ferric chloride hexahydrate in water and stir for 20 minutes to obtain mixed solution I, wherein Co in mixed solution I 2+ ions and Fe 3+ The ratio of the amount of ion to substance is Co 2+ : Fe 3+ =2:1; Then, the mixed solution I was added to 10mL of 2mol / L sodium hydroxide aqueous solution, stirred for 15min, and the mixed solution II was obtained for use;

[0030] (2) Add 10 mL of 60 mmol / L sodium borohydride solution to the mixed solution II, stir for 20 min to obtain the suspension I, and set aside;

[0031] (3) The tetragonal perovskite PbTiO 3 Nanosheets were added to suspension I, stirred for 30 minutes, and ultrasonically dispersed for 20 minutes to obtain suspension II for use;

[0032] (4) Transfer the suspension II to the ...

Embodiment 3

[0034] A two-dimensional single crystal PbTiO with strong magnetoelectric coupling effect 3 -CoFe 2 o 4 A method for preparing a composite nanomaterial, comprising the steps of:

[0035] (1) First, dissolve cobalt nitrate hexahydrate and ferric chloride hexahydrate in water and stir for 15 minutes to obtain mixed solution I, wherein Co in mixed solution I 2+ ions and Fe 3+ The ratio of the amount of ion to substance is Co 2+ : Fe 3+ =2:1; Then, the mixed solution I was added to 10mL of 2mol / L sodium hydroxide aqueous solution, stirred for 15min, and the mixed solution II was obtained for use;

[0036] (2) Add 10 mL of 40 mmol / L sodium borohydride solution to the mixed solution II, stir for 20 min to obtain the suspension I, and set aside;

[0037] (3) The tetragonal perovskite PbTiO 3 Nanosheets were added to suspension I, stirred for 30 minutes, and ultrasonically dispersed for 30 minutes to obtain suspension II for use;

[0038] (4) Transfer the suspension II to the ...

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Abstract

The invention discloses a preparation method of two-dimensional single-crystal PbTiO3-CoFe2O4 composite nano-material with strong magnetoelectric coupling effect, which comprises the following steps that: based on the principle of simple wet chemical reaction, a tetragonal perovskite PbTiO3 nano-sheets synthetised by hydro-thermal method, a cobaltous nitrate hexahydrate, a ferric chloride hexahydrate, a odium borohydride and deionized water are used as the raw materials, and a secondary hydrothermal method is adopted to selectively grow CoFe2O4 on the positive polarization surface of the tetragonal perovskite PbTiO3 nano-sheet to obtain a two-dimensional single-crystal PbTiO3-CoFe2O4 composite nano-material with a strong magnetoelectric coupling effect. The two-dimensional single-crystal PbTiO3-CoFe2O4 composite nano-material prepared by the method has the advantages of simple preparation method, easy control, low cost; and the prepared two-dimensional single-crystal PbTiO3-CoFe2O4 composite nano-material has a strong magnetoelectric coupling effect. The preparation method of two-dimensional single-crystal PbTiO3-CoFe2O4 composite nano-material with strong magnetoelectric couplingeffect has wide application prospect in the fields of microwave, wide band detection, sensing control, information storage and the like.

Description

technical field [0001] The invention belongs to the technical field of composite material preparation, in particular to a two-dimensional single crystal PbTiO with strong magnetoelectric coupling effect 3 -CoFe 2 o 4 Preparation methods of composite nanomaterials. Background technique [0002] Due to their simultaneous ferroelectric, ferromagnetic or ferroelastic ordering and magnetoelectric coupling effects, multiferroic materials have increasingly become a research hotspot for researchers. Compared with single multiferroic materials, composite multiferroic materials overcome the magnetoelectric repulsion effect, have higher Curie and Neel temperatures and larger magnetoelectric coupling coefficients, and are widely used in the fields of microwave, sensor control and information storage. It has application prospect. Among them, the ferroelectric-ferromagnetic multiferroic heterostructure has the characteristics of controllable chemical composition and flexible structure...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/22C30B7/14C30B7/10B82Y30/00
CPCB82Y30/00C30B7/10C30B7/14C30B29/22
Inventor 钞春英任召辉李浩韩高荣高远浩
Owner XUCHANG UNIV