Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of iron-doped barium titanate-based magnetoelectric ceramic with layered structure

A layered structure, iron-doped technology, applied in the direction of the magnetism of inorganic materials, can solve the problem of large leakage current of iron-doped barium titanate-based magnetoelectric ceramics

Active Publication Date: 2020-01-10
HARBIN INST OF TECH
View PDF17 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the iron-doped barium titanate-based magnetoelectric ceramics prepared by the existing method has a large leakage current, and provide a method for preparing iron-doped barium titanate-based magnetoelectric ceramics with a layered structure

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of iron-doped barium titanate-based magnetoelectric ceramic with layered structure
  • Preparation method of iron-doped barium titanate-based magnetoelectric ceramic with layered structure
  • Preparation method of iron-doped barium titanate-based magnetoelectric ceramic with layered structure

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0045] Embodiment 1: This embodiment is a method for preparing iron-doped barium titanate-based magnetoelectric ceramics with a layered structure, which is completed in the following steps:

[0046] 1. Preparation of BaTiO 3 membrane:

[0047] ①, weighing, mixing, drying: according to the chemical formula BaTiO 3 , weigh BaCO according to the stoichiometric ratio 3 and TiO 2 , will weigh the BaCO 3 and TiO 2 Add it into a ball mill, and then carry out planetary ball milling for 4h-24h under the conditions that the ball milling speed is 100r / min-200r / min, the ball-milling medium is absolute ethanol, and the ball-to-material ratio is (5-10):1, to obtain mixture I; Dry the mixture I at a temperature of 60-80°C for 20h-24h to obtain BaCO 3 and TiO 2 mixture;

[0048] ② Calcination: BaCO 3 and TiO 2 The mixture is heated from room temperature to 1150°C to 1250°C at a heating rate of 1°C / min to 5°C / min, and kept at a temperature of 1150°C to 1250°C for 3h to 6h, and then c...

specific Embodiment approach 2

[0087] Specific embodiment 2: the difference between this embodiment and specific embodiment 1 is: step 1 ② in the BaCO 3 and TiO 2 The mixture is heated from room temperature to 1150°C to 1200°C at a heating rate of 3°C / min to 4°C / min, and kept at a temperature of 1150°C to 1200°C for 3h to 4h, and then cooled to room temperature with the furnace to obtain BaTiO 3 Ceramic powder. Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0088] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the dispersant described in step one ⑤ is castor oil or fish oil; the solvent described in step 1 ⑤ is the mixture of xylene and dehydrated alcohol Mixed solvent, wherein the volume ratio of xylene and dehydrated alcohol is 1:1; the plasticizer described in step one ⑤ is butyl benzyl phthalate or polyalkylene glycol; step 1 ⑤ described The binder is polyvinyl butyral. Other steps are the same as those in Embodiment 1 or 2.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Remanent polarizationaaaaaaaaaa
Coercive fieldaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of iron-doped barium titanate-based magnetoelectric ceramic, and concretely relates to a preparation method of iron-doped barium titanate-based magnetoelectric ceramic with a layered structure. The purpose of the invention is to solve the problem of large leakage current of the iron-doped barium titanate-based magnetoelectric ceramic prepared by existing methods. The method comprises the following steps: 1, preparation of a BaTiO3 film; 2, preparation of a BaTi1-xFexO3 film; 3, cutting; 4, laminating; 5, hot pressing; 6, glue discharging; 7, isostatic pressing; and 8, sintering to obtain the BaTiO3 / BaTi(1-x)FexO3 / BaTiO3 magnetoelectric ceramic with the layered structure, namely the iron-doped barium titanate-based magnetoelectric ceramic with the layered structure. Introduction of a magnetic element to the prepared barium titanate-based magnetoelectric ceramic well reserves the original ferroelectric properties, and the leakage current of the barium titanate-based magnetoelectric ceramic is smaller than that of ceramic blocks which comprise the same components and are prepared from by other methods. The iron-doped barium titanate-based magnetoelectric ceramic with tge layered structure can be obtained in the invention.

Description

technical field [0001] The invention relates to a preparation method of iron-doped barium titanate-based magnetoelectric ceramics. Background technique [0002] Magnetoelectric materials refer to functional materials that have both ferromagnetism and ferroelectricity and have coupling effects. When applying magnetoelectric materials, its coupling properties can be used, or one of the properties can be used alone, so its applications are very extensive, involving microwave, storage, logic devices and other fields. [0003] For iron-doped barium titanate-based magnetoelectric ceramics, the existing preparation technology has problems such as large leakage current and poor ferroelectric performance after the introduction of magnetic elements. Contents of the invention [0004] The purpose of the present invention is to solve the problem of large leakage current of the iron-doped barium titanate-based magnetoelectric ceramics prepared by the existing method, and provide a met...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C04B35/468C04B35/622H01F1/01
CPCC04B35/468C04B35/622C04B2235/3272C04B2235/6562C04B2235/6567H01F1/01
Inventor 张洪军吴春龙柯华李方喆田晶鑫唐晓慧罗蕙佳代曹璐
Owner HARBIN INST OF TECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com