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Microwave absorbing body based on YIG thin film material and preparation method thereof

A technology of microwave absorption and thin film materials, which is applied in metal material coating technology, ion implantation plating, coating, etc., can solve the problems of complex process, harsh reaction conditions, cumbersome operation process, etc., and achieve excellent microwave absorption performance and preparation The effect of simple method

Inactive Publication Date: 2020-02-28
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] For the traditional YIG film preparation method, its process is complicated, the reaction conditions are harsh, the operation process is cumbersome, it is difficult to carry out large-scale industrial production, and there are many problems in practical application.

Method used

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  • Microwave absorbing body based on YIG thin film material and preparation method thereof
  • Microwave absorbing body based on YIG thin film material and preparation method thereof
  • Microwave absorbing body based on YIG thin film material and preparation method thereof

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Embodiment

[0027] figure 1 It is a structural schematic diagram of the microwave absorbing material of the YIG film material in the method of the present invention. Such as figure 1 As shown, the microwave absorber includes: a substrate 100; a thin film 101; the thin film 101 is grown on the substrate 100, and a YIG single crystal thin film is selected in this embodiment.

[0028] The substrate 100 is a Si substrate.

[0029] The thin film 101, the YIG single crystal thin film selected by the example is a rare earth ferrimagnetic ferrite material, which belongs to the cubic crystal system, the lattice is a body-centered cubic lattice, and the lattice group type is Ia3d-O h 10 ; The structure of the crystal lattice is a structure composed of cations as the skeleton, and the metal cations of ferrite are embedded in the gap of oxygen ions.

[0030] The thin film 101 can be prepared by radio frequency magnetron sputtering, and the thickness of the thin film is about 100 nm.

[0031] Fur...

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Abstract

The invention belongs to the field of electromagnetic wave absorbing materials, in particular to a microwave absorbing body based on a YIG thin film material and a preparation method thereof. The coating methods involved comprise radio frequency magnetron sputtering, chemical vapour deposition, liquid phase epitaxy, pulsed laser deposition and the like; and the wave absorbing body involved is a thin film material deposited on the surface of a substrate. The substrate is one of a silicon substrate, an yttrium iron garnet substrate, a glass substrate and a magnesium oxide substrate; and the thinfilm can be one of a YIG single crystal thin film, a doped YIG thin film and a Gd:Ga:YIG thin film with a movable magnetic domain. According to the microwave absorbing body based on the YIG thin filmmaterial and the preparation method thereof, the YIG thin film is deposited on the substrate by mainly utilizing a YIG target material; and the prepared YIG thin film has the advantages of wide waveabsorbing frequency band, good wave absorbing performance and the like, and can be widely applied to the field of wave absorbing materials.

Description

technical field [0001] The invention belongs to the field of electromagnetic wave absorbing materials, and relates to a microwave absorber based on a YIG film material and a preparation method thereof. Background technique [0002] With the development of microwave communication technology, the requirements for ferrite used in microwave devices such as isolators, phase shifters, and circulators are getting higher and higher, requiring good performance, light weight, and low cost. As a typical garnet-type ferrite, yttrium iron garnet (YIG) has a good gyromagnetic effect, which can be used to prepare microwave devices such as circulators and phase shifters. In recent years, with the development of electronic information technology, people's demand for YIG is getting higher and higher, and the application market in mobile communication, radar system and other fields is expanding day by day. [0003] Dillon et al. of Bell Laboratories prepared YIG single crystal for the first t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/35C23C14/08C23C14/58
CPCC23C14/085C23C14/3414C23C14/35C23C14/5806
Inventor 张雪峰朱大鹏谭向洋石振张鉴
Owner NORTHEASTERN UNIV
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