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Ferromagnetic material and its preparation method, sensor

A ferromagnetic material and sensor technology, applied in the field of materials, can solve the problems of complex preparation methods, difficult preparation, and low quality of two-dimensional metallic ferromagnetic materials

Active Publication Date: 2020-11-13
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Based on this, it is necessary to provide a ferromagnetic material and its preparation method, sensor

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  • Ferromagnetic material and its preparation method, sensor
  • Ferromagnetic material and its preparation method, sensor
  • Ferromagnetic material and its preparation method, sensor

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Embodiment Construction

[0031] In order to make the object, technical solution and advantages of the present invention clearer, the ferromagnetic material, its preparation method and sensor of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0032] In the embodiment of the present application, a ferromagnetic material is provided. The structural formula of the ferromagnetic material is A 3 B 3 o 8 , wherein A is one or more of alkaline earth metal elements and rare earth metal elements. B is one or more transition group metal elements. The ferromagnetic material is a two-dimensional metallic oxide material. The alkaline earth metal includes one or more of Be, Mg, Ca, Sr, Ba. The rare earth metal elements include one or more of La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, H...

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Abstract

A ferromagnetic material has a structural formula of A3B3O8, wherein A is one or more of alkaline earth metals and rare-earth metals, B is one or more of transition metals, and the ferromagnetic material is a two-dimensional metal oxide material. The ferromagnetic material has a stable structure, high crystal quality and two-dimensional ferromagnetic metallic properties. The ferromagnetic material exhibits significant magnetic anisotropy at a low temperature. The ferromagnetic material has a ferromagnetic transition temperature of about 200 K. The ferromagnetic material has quasi-two-dimensional electrical conductivity in an in-plane direction. The ferromagnetic material can be widely applied in the field of ferromagnetic sensors.

Description

technical field [0001] The invention relates to the field of materials, in particular to a ferromagnetic material, a preparation method thereof, and a sensor. Background technique [0002] Most of the material structures in nature are three-dimensional, and the magnetic and electrical properties of materials are therefore mostly three-dimensional. The in-plane and out-of-plane directions of materials with three-dimensional properties do not have a significant difference. Under certain conditions, on the surface of a three-dimensional material or the interface of two three-dimensional materials, a two-dimensional magnetic layer or a special electronic state different from that of the bulk material will be formed. For example, on the surface of a three-dimensional topological insulator, LaAlO 3 / SrTiO 3 The bulk state of the heterojunction interface is an insulator, and the surface or interface is a two-dimensional metallic state. while LaAlO 3 / SrTiO 3 At the same time,...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F1/34H01F41/02G01R33/10G01R33/09
CPCG01R33/093G01R33/096G01R33/10H01F1/342H01F41/0273G01R33/09H01F1/34H01F41/02
Inventor 于浦张建兵王猛
Owner TSINGHUA UNIV
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