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Iron oxide material with the function for electric field to regulate and control magnetization

A technology of iron oxide and magnetization, applied in the direction of magnetism of inorganic materials, etc., can solve the problem of material blank of magnetization function

Inactive Publication Date: 2009-10-14
INST OF PHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, it has been found that some multiferroic materials such as BiFeO 3 , YMnO 3 It has the function of adjusting ferroelectric and dielectric properties by magnetic field at low temperature, but the material with the function of adjusting magnetization by electric field is still blank

Method used

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  • Iron oxide material with the function for electric field to regulate and control magnetization
  • Iron oxide material with the function for electric field to regulate and control magnetization
  • Iron oxide material with the function for electric field to regulate and control magnetization

Examples

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Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: prepare LuFe 2 o 4 Polycrystalline and Single Crystal Samples

[0016] 2.8370 g of Lu with a purity of 99.99% 2 o 3 , 1.8975 g of Fe with a purity of 99.98% 2 o 3 , mixed with 0.2654 grams of Fe powder with a purity of 99.99%, stirred and ground until uniform, pressed into tablets with a powder tablet press, placed in a quartz tube, vacuum-sealed, sintered at 1100 ° C for 48 hours, and naturally cooled to room temperature with the furnace . The structure and phase analysis of the prepared polycrystalline samples by powder X-ray diffraction showed that the generated LuFe 2 o 4 Polycrystalline samples have a nice single phase. The prepared polycrystalline samples were pressed into rods, suspended in an optical floating zone high temperature furnace to grow single crystal samples in an argon atmosphere. Structural phase analysis and crystal orientation of the obtained single crystal samples were carried out by X-ray diffraction method. The prepared ...

Embodiment 2

[0021] Embodiment 2: prepare YbFe 2 o 4 Polycrystalline and Single Crystal Samples

[0022] in LuFe 2 o 4 On the basis of materials, a series of derivative compounds can be formed by substituting part or all of Lu sites with other neighboring rare earth elements (including Ho, Er, Tm, Yb). These derivatives and LuFe 2 o 4 Have the same crystal structure and similar electrical properties. In this example, we completely replace Lu elements with Yb elements to form YbFe 2 o 4 . 2.8251 g of Yb with a purity of 99.99% 2 o 3 , 1.9080 g of Fe with a purity of 99.98% 2 o 3 , mixed with 0.2669 grams of Fe powder with a purity of 99.99%, stirred and ground until uniform, pressed into tablets with a powder tablet press, put into a quartz tube, vacuum-sealed, sintered at 1100 ° C for 48 hours, and naturally cooled to room temperature with the furnace . The structure and phase analysis of the prepared samples by powder X-ray diffraction showed that the generated YbFe 2 o 4 ...

Embodiment 3

[0023] Embodiment 3: Preparation of LuFeCuO 4 Polycrystalline samples.

[0024] in LuFe 2 o 4 On the basis of materials, a series of derivative compounds can be formed by substituting the Fe sites with other transition metal elements (including Mn, Co, Cu, Zn, and Mg, etc.). These derivatives and LuFe 2 o 4 It has a similar crystal structure and similar magnetoelectric properties. In this example, we replace half of Fe with Cu element to form LuFeCuO 4 . 2.7761 g of Lu with a purity of 99.99% 2 o 3 , 1.1141 g of Fe with a purity of 99.998% 2 o 3 , mixed with 1.1099 grams of CuO powder with a purity of 99.99%, stirred and ground until uniform, pressed into tablets with a powder tablet press, placed in a quartz tube, vacuum-sealed, sintered at 1100 ° C for 48 hours, and naturally cooled to room temperature with the furnace . The structure and phase analysis of the prepared samples by powder X-ray diffraction showed that the generated LuFeCuO 4 The sample has a nice ...

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Abstract

The invention discloses an iron-base oxide material with the function for an electric field to regulate and control magnetization. The chemical formula of the iron oxide material is (Lu1-XRx) (Fe2-yMy)O4, wherein R is a heavy rare earth element, M is a transition metal element, x is more than or equal to 0 and less than or equal to 1, y is more than or equal to 0 and less than or equal to 2, and x and y signify atomic percent content. The material has the function for the electric field to regulate and control the magnetization, namely an external voltage on the material can lead the magnetization to occur obvious change, and whether an external magnetic field is added or not can control the increase or decrease of magnetization. The material can realize that the electric field regulates and controls magnetic property, thus having significant application prospect.

Description

technical field [0001] The invention relates to an iron oxide material, in particular to an iron-based oxide material with the function of regulating the magnetization intensity by an electric field. Background technique [0002] Magnetic materials and ferroelectric materials are widely used in daily life and industrial production. Generally, magnetic materials only respond to an applied magnetic field, and ferroelectric materials only respond to an applied electric field. It has long been hoped to find a so-called "multiferroic" material that possesses both ferromagnetic and ferroelectric properties. In this type of material, due to the strong magnetoelectric coupling, its electric polarization can be regulated not only by an external electric field but also by an external magnetic field. Similarly, its magnetization can be regulated not only by an external magnetic field but also by an external electric field. Once such magnetoelectric coupling and multi-field cross-regu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F1/10C04B35/26
Inventor 孙阳李长辉成昭华
Owner INST OF PHYSICS - CHINESE ACAD OF SCI
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