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Yttrium-free high-dielectric-constant microwave ferrite material and preparation method and device thereof
The invention provides a yttrium-free high-dielectric-constant microwave ferrite material and a preparation method and device thereof. The chemical formula of the microwave ferrite material is Bi1.2Ca1.8-1.2a -0.5b-x-y-zVaAlbZrxMgyZnzFe4.95-a-b-x-y-zO12, wherein a is equal to 0.1-0.2, b is equal to 0.1-0.2, x is equal to 0.3-0.5, y is equal to 0.02-0.1 and z is equal to 0.02-0.1. The preparation method comprises the following steps of: preparing Bi1.2Ca1.8-1.2a -0.5b-x-y-zVaAlbZrxMgyZnzFe4.95-a-b-x-y-zO12 according to the stoichiometric ratio that a is 0.1-0.2, b is 0.1-0.2, x is 0.3-0.5, y is0.02-0.1 and z is 0.02-0.1, and the microwave ferrite material is prepared by using the raw materials. The material disclosed by the invention has the characteristics of low cost, high dielectric constant and the like, the dielectric constant is 24-26, 4piMs is 1400-1650Gs, delta H is less than 50Oe, and Tc is greater than 190 DEG C, so that the application of a microwave ferrite device can be well met, and the problems of miniaturization and the like of the microwave device are solved.
本发明提供了一种无钇配方的高介电常数微波铁氧体材料及其制备方法和器件。该微波铁氧体材料的化学式为Bi1.2Ca1.8‑1.2a‑0.5b‑x‑y‑zVaAlbZrxMgyZnzFe4.95‑a‑b‑x‑y‑zO12，a＝0.1～0.2,b＝0.1～0.2,x＝0.3～0.5,y＝0.02～0.1,z＝0.02～0.1；该制备方法包括按分子式Bi1.2Ca1.8‑1.2a‑0.5b‑x‑y‑zVaAlbZrxMgyZnzFe4.95‑a‑b‑x‑y‑zO12；按照a＝0.1～0.2,b＝0.1～0.2,x＝0.3～0.5,y＝0.02～0.1,z＝0.02～0.1的化学计量比配备原料，并使用所述原料制作所述微波铁氧体材料。本发明的材料具有低本成本、高介电常数等特性，其介电常数为24～26，4πMs为1400～1650Gs，△H＜50Oe，Tc>190℃，能够很好地满足微波铁氧体器件的应用，解决微波器件小型化等难题。
Yttrium-free high-dielectric-constant microwave ferrite material and preparation method and device thereof
The invention provides a yttrium-free high-dielectric-constant microwave ferrite material and a preparation method and device thereof. The chemical formula of the microwave ferrite material is Bi1.2Ca1.8-1.2a -0.5b-x-y-zVaAlbZrxMgyZnzFe4.95-a-b-x-y-zO12, wherein a is equal to 0.1-0.2, b is equal to 0.1-0.2, x is equal to 0.3-0.5, y is equal to 0.02-0.1 and z is equal to 0.02-0.1. The preparation method comprises the following steps of: preparing Bi1.2Ca1.8-1.2a -0.5b-x-y-zVaAlbZrxMgyZnzFe4.95-a-b-x-y-zO12 according to the stoichiometric ratio that a is 0.1-0.2, b is 0.1-0.2, x is 0.3-0.5, y is0.02-0.1 and z is 0.02-0.1, and the microwave ferrite material is prepared by using the raw materials. The material disclosed by the invention has the characteristics of low cost, high dielectric constant and the like, the dielectric constant is 24-26, 4piMs is 1400-1650Gs, delta H is less than 50Oe, and Tc is greater than 190 DEG C, so that the application of a microwave ferrite device can be well met, and the problems of miniaturization and the like of the microwave device are solved.
本发明提供了一种无钇配方的高介电常数微波铁氧体材料及其制备方法和器件。该微波铁氧体材料的化学式为Bi1.2Ca1.8‑1.2a‑0.5b‑x‑y‑zVaAlbZrxMgyZnzFe4.95‑a‑b‑x‑y‑zO12，a＝0.1～0.2,b＝0.1～0.2,x＝0.3～0.5,y＝0.02～0.1,z＝0.02～0.1；该制备方法包括按分子式Bi1.2Ca1.8‑1.2a‑0.5b‑x‑y‑zVaAlbZrxMgyZnzFe4.95‑a‑b‑x‑y‑zO12；按照a＝0.1～0.2,b＝0.1～0.2,x＝0.3～0.5,y＝0.02～0.1,z＝0.02～0.1的化学计量比配备原料，并使用所述原料制作所述微波铁氧体材料。本发明的材料具有低本成本、高介电常数等特性，其介电常数为24～26，4πMs为1400～1650Gs，△H＜50Oe，Tc>190℃，能够很好地满足微波铁氧体器件的应用，解决微波器件小型化等难题。
Yttrium-free high-dielectric-constant microwave ferrite material and preparation method and device thereof
无钇配方的高介电常数微波铁氧体材料及其制备方法和器件
BRIAN MURRAY (Autor:in) / NIE MIN (Autor:in) / LIU JIAN (Autor:in)
23.02.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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