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Ferrite material with high dielectric constant
The invention belongs to the technical field of ferrite materials, and particularly relates to a ferrite material with a high dielectric constant, the ferrite material is a single-phase material, partof iron ions in the ferrite are replaced by titanium ions, cerium ions and zinc ions, the titanium ions exist in the form of positively charged Ti<4+> ions, the cerium ions exist in the form of positively charged Ce<4+> ions, the zinc ions exist in the form of positively charged Zn<2+> ions, and iron ions in the ferrite coexist in the form of Fe<3+> and Fe<2+> ions. The ferrite material is prepared by a sol-gel method, a specific preparation process is designed, the formation amount of Fe<2+>/Fe<3+> defect dipoles is increased on the basis of high magnetic performance, ferrite with extremelylow modulation voltage and high dielectric adjustable characteristics is obtained, and tests show that the dielectric constant epsilon is greater than or equal to 25, the ferromagnetic resonance linewidth [delta]H is less than or equal to 6 kA/m, and the dielectric loss tg[delta][epsilon] is less than or equal to 0.0005. The ferrite material has the characteristics of low cost anddielectric constant, and can be used for solving the problems of miniaturization and the like of microwave devices.
本发明属于铁氧体材料技术领域，具体涉及一种高介电常数的铁氧体材料，所述铁氧体材料为单相材料，铁氧体中部分铁离子被钛离子、铈离子和锌离子取代，钛离子以正电的Ti4+离子存在，铈离子以正电的Ce4+离子存在，锌离子以正电的Zn2+离子存在，铁氧体中的铁离子以Fe3+和Fe2+离子形式共存。本发明利用溶胶凝胶法制备铁氧体材料，设计特定的制备工艺，在高磁性能的基础上，提高Fe2+/Fe3+缺陷偶极子形成量，得到极低调制电压和很高的介电可调特性的铁氧体，经测试，介电常数ε≥25，铁磁共振线宽△H≤6kA/m，介电损耗tgδε≤0.0005，具有成本低，介电常数高等特性，可以用于解决微波器件小型化等难题。
Ferrite material with high dielectric constant
The invention belongs to the technical field of ferrite materials, and particularly relates to a ferrite material with a high dielectric constant, the ferrite material is a single-phase material, partof iron ions in the ferrite are replaced by titanium ions, cerium ions and zinc ions, the titanium ions exist in the form of positively charged Ti<4+> ions, the cerium ions exist in the form of positively charged Ce<4+> ions, the zinc ions exist in the form of positively charged Zn<2+> ions, and iron ions in the ferrite coexist in the form of Fe<3+> and Fe<2+> ions. The ferrite material is prepared by a sol-gel method, a specific preparation process is designed, the formation amount of Fe<2+>/Fe<3+> defect dipoles is increased on the basis of high magnetic performance, ferrite with extremelylow modulation voltage and high dielectric adjustable characteristics is obtained, and tests show that the dielectric constant epsilon is greater than or equal to 25, the ferromagnetic resonance linewidth [delta]H is less than or equal to 6 kA/m, and the dielectric loss tg[delta][epsilon] is less than or equal to 0.0005. The ferrite material has the characteristics of low cost anddielectric constant, and can be used for solving the problems of miniaturization and the like of microwave devices.
本发明属于铁氧体材料技术领域，具体涉及一种高介电常数的铁氧体材料，所述铁氧体材料为单相材料，铁氧体中部分铁离子被钛离子、铈离子和锌离子取代，钛离子以正电的Ti4+离子存在，铈离子以正电的Ce4+离子存在，锌离子以正电的Zn2+离子存在，铁氧体中的铁离子以Fe3+和Fe2+离子形式共存。本发明利用溶胶凝胶法制备铁氧体材料，设计特定的制备工艺，在高磁性能的基础上，提高Fe2+/Fe3+缺陷偶极子形成量，得到极低调制电压和很高的介电可调特性的铁氧体，经测试，介电常数ε≥25，铁磁共振线宽△H≤6kA/m，介电损耗tgδε≤0.0005，具有成本低，介电常数高等特性，可以用于解决微波器件小型化等难题。
Ferrite material with high dielectric constant
一种高介电常数的铁氧体材料
CHEN GUOLIANG (author) / CHEN YOUBIAO (author) / TANG XIAOMING (author)
2021-03-09
Patent
Electronic Resource
Chinese
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