Microwave ferrite material with gradient saturation magnetization intensities, ferrite substrate prepared from microwave ferrite material and preparation method of ferrite substrate

Abstract

The invention discloses a microwave ferrite material with gradient saturation magnetization intensities. The chemical composition of the raw materials of the material is Bi<h>Gd<k>Y<3-h-k-(a+c+2d+f)>Ca<a+c+2d+f>SnInZr<c>V<d>Al<e>Ge<f>Fe<5-a-b-c-d-e-f-delta1>O<12> and Ni<1-x+y-z>Zn<x>D<y>Sn<y>Co<z>Mn<m>Fe<2-2y-m-n-delta2>O<4>, wherein a is no less than 0 and no more than 0.5, b is no less than 0 and no more than 0.5, c is no less than 0 and no more than 0.5, d is no less than 0 and no more than 1.0, e is no less than 0 and no more than 1.0, f is no less than 0 and no more than 0.5, h is no less than 0 and no more than 1.5, k is no less than 0 and no more than 0.7, x is no less than 0 and no more than 0.5, y is no less than 0 and no more than 0.15, z is no less than 0 and no more than0.06, m is no less than 0 and no more than 0.1, delta is an iron deficiency amount, delta1 is larger than or equal to 0.02 and smaller than or equal to 0.3, and delta 2 is larger than or equal to 0.02and smaller than or equal to 0.2. The raw materials form at least two different saturation magnetization intensity areas on a substrate; the saturation magnetization intensity gradients on the microwave ferrite substrate with gradient saturation magnetization intensities can be randomly combined within the range of 47 kA/m to 414 kA/m; different saturation magnetization intensity areas can be inany shape; the problems of miniaturization and integration of microwave devices and the technical problems of miniaturization, high isolation and low insertion loss of frequency doubling and triple frequency broadband devices are solved through combination of saturation magnetization intensities of different gradients; and the preparation method is reasonable in process and suitable for application and popularization.

Description

technical field [0001] The invention relates to the field of microwave technology and magnetic materials, in particular to a gradient saturation magnetization microwave ferrite substrate and a preparation method thereof. Background technique [0002] From the overall development trend of modern microwave communication equipment system, electronic countermeasure system, remote control and telemetry system integration, modularization, small and multi-functional. Especially in view of the development of 5G communication, the bandwidth and volume requirements of microwave ferrite devices are getting higher and higher. The design idea of ​​the traditional broadband microwave ferrite device is based on a single performance ferrite material, and the bandwidth is broadened through the circuit. The ferrite material with single performance has a single saturation magnetization, and the optimal operating point can only be in a specific area, which is difficult to meet the technical re...

AI Technical Summary

Problems solved by technology

The crystal structure, solid-state reaction temperature, and sintering shrinkage of the two materials are quite different, and traditional methods cannot combine them

Images