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One-dimensional ferromagnetic filler-ferroelectric polymer multiferroic composite medium and preparation method thereof

A technology of ferroelectric polymers and composite media, applied in fiber processing, rayon manufacturing, fiber chemical characteristics, etc., can solve problems such as weak magnetoelectric coupling effects, increase contact area, improve leakage current, and solve leakage current Effect

Inactive Publication Date: 2020-12-04
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, although researchers have discovered a variety of single-phase multiferroic composites so far, their magnetoelectric coupling effect at room temperature is weak, and the artificial construction of magnetoelectric multiferroic composites has become a research hotspot today.

Method used

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  • One-dimensional ferromagnetic filler-ferroelectric polymer multiferroic composite medium and preparation method thereof
  • One-dimensional ferromagnetic filler-ferroelectric polymer multiferroic composite medium and preparation method thereof
  • One-dimensional ferromagnetic filler-ferroelectric polymer multiferroic composite medium and preparation method thereof

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specific Embodiment approach 1

[0040] A preparation method of a one-dimensional ferromagnetic filler-ferroelectric polymer multiferroic composite medium, comprising the steps of:

[0041] Step a, preparation of CoFe 2 o 4 Nanofibers;

[0042] Step b, preparation of CoFe 2 o 4 -P(VDF-TrFE) based composite medium;

[0043] Step c, preparing a one-dimensional ferromagnetic filler-ferroelectric polymer multiferroic composite medium.

[0044] A method for preparing a one-dimensional ferromagnetic filler-ferroelectric polymer multiferroic composite medium described in this embodiment, in step a, CoFe 2 o 4 The preparation method of nanofiber comprises the steps:

[0045] Step a1, weighing cobalt hexahydrate, ferric nitrate nonahydrate, and citric acid of a certain quality respectively according to the ratio of the amount of substances, and set aside;

[0046] Step a2, adding cobalt pinate hexahydrate and ferric nitrate nonahydrate weighed in step a1 into the ethanol solution, stirring evenly, adding citri...

specific Embodiment approach 2

[0066] A preparation method of a one-dimensional ferromagnetic filler-ferroelectric polymer multiferroic composite medium, comprising the steps of:

[0067] Step a, preparation of CoFe 2 o 4 Nanofibers;

[0068] Step b, preparation of CoFe 2 o 4 -P(VDF-TrFE) based composite medium;

[0069] Step c, preparing a one-dimensional ferromagnetic filler-ferroelectric polymer multiferroic composite medium.

[0070] A method for preparing a one-dimensional ferromagnetic filler-ferroelectric polymer multiferroic composite medium described in this embodiment, in step a, CoFe 2 o 4 The preparation method of nanofiber comprises the steps:

[0071] Step a1, weighing cobalt hexahydrate, ferric nitrate nonahydrate, and citric acid of a certain quality respectively according to the ratio of the amount of substances, and set aside;

[0072] Step a2, adding cobalt pinate hexahydrate and ferric nitrate nonahydrate weighed in step a1 into the ethanol solution, stirring evenly, adding citri...

specific Embodiment approach 3

[0090] A preparation method of a one-dimensional ferromagnetic filler-ferroelectric polymer multiferroic composite medium, comprising the steps of:

[0091] Step a, preparation of CoFe 2 o 4 Nanofibers;

[0092] Step b, preparation of CoFe 2 o 4 -P(VDF-TrFE) based composite medium;

[0093] Step c, preparing a one-dimensional ferromagnetic filler-ferroelectric polymer multiferroic composite medium.

[0094] A method for preparing a one-dimensional ferromagnetic filler-ferroelectric polymer multiferroic composite medium described in this embodiment, in step a, CoFe 2 o 4 The preparation method of nanofiber comprises the steps:

[0095] Step a1, weighing cobalt hexahydrate, ferric nitrate nonahydrate, and citric acid of a certain quality respectively according to the ratio of the amount of substances, and set aside;

[0096] Step a2, adding cobalt pinate hexahydrate and ferric nitrate nonahydrate weighed in step a1 into the ethanol solution, stirring evenly, adding citri...

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Abstract

The invention discloses a one-dimensional ferromagnetic filler-ferroelectric polymer multiferroic composite medium and a preparation method thereof, and belongs to the technical field of multiferroicfilm preparation. The technical problem to be solved by the invention is to improve the multiferroic property of the multiferroic composite medium and reduce the possible leakage current of the composite medium. The preparation method comprises the following steps of firstly, preparing a CoFe2O4 nanofiber inorganic filling phase with a large length-diameter ratio by adopting a sol-gel method and an electrostatic spinning technology, and further preparing a P (VDF-TrFE) mixed solution with uniformly dispersed nanofibers by utilizing a solution method. The directionally-arranged one-dimensionalferromagnetic filler-ferroelectric polymer multiferroic composite medium is obtained by using a high-speed directional spinning technology and a hot-pressing method, and the multiferroic composite medium has the advantages of low price of required equipment, simple process, easiness in implementation and excellent ferroelectric and ferromagnetic properties. The composite medium is used in the fields of sensors and nonvolatile memory devices.

Description

technical field [0001] The invention belongs to the technical field of multiferroic film preparation, and specifically relates to a one-dimensional ferromagnetic filler-ferroelectric polymer multiferroic composite medium and a preparation method thereof. Background technique [0002] In order to adapt to the rapid progress of modern science and technology, the requirements for hardware such as electronic devices are getting higher and higher. Not only must the structure be miniaturized and integrated, but also the functions must be diversified at the same time. Therefore, the development has multiple aspects at the same time. New materials with this kind of function are imminent, and it is worth mentioning that multiferroic materials just meet this requirement, and the coupling between different ferroics can produce some new functions. For example, the recombination between ferroelectricity and ferromagnetism produces a magnetoelectric coupling effect, making magnetoelectric...

Claims

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Application Information

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IPC IPC(8): D04H1/728D01D5/00D06C7/00D01F6/48D01F1/10D01F9/08B82Y40/00
CPCD04H1/728D01D5/0015D06C7/00D01F6/48D01F1/10D01F9/08B82Y40/00
Inventor 冯宇张煜迟庆国梁剑
Owner HARBIN UNIV OF SCI & TECH
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