Low-loss soft magnetic ferrite material for 5G and preparation method thereof

Abstract

The invention belongs to the technical field of ferrite synthesis, and relates to a low-loss soft magnetic ferrite material for 5G and a preparation method thereof. The material comprises 36.8 mol%-38.5 mol% of modified Fe2O3, 26.4 mol%-28.2 mol% of ZnO and the balance of Mn3O4. The soft magnetic ferrite material further comprises additives which comprise at least four of CaCO3, Nb2O5, Bi2O3, V2O5, Co2O3 and MoO3. The soft magnetic ferrite material further comprises a distortion resisting agent. According to the invention, Fe2O3 is modified by wrapping SiC fibers in Fe2O3, the modified raw material can be doped from all directions in the crystal after material transportation and mixing, the doping effect is more obvious, meanwhile, a barrier layer formed by the distortion resisting agent on the surface of the crystal can reduce gaps and also can prevent crystal lattices from deforming, the distortion resisting agent can be volatilized in the subsequent sintering process, so that the ferrite can keep relatively high magnetic conductivity while relatively low dielectric loss is ensured.

Description

technical field [0001] The invention belongs to the technical field of ferrite synthesis, in particular to a 5g low-loss soft ferrite material and a preparation method thereof. Background technique [0002] With the development of power supply technology and communication technology, the development of power supply in the direction of more energy saving and miniaturization requires higher power loss of materials. Outdoor facilities of modern 5G communication equipment, such as power supplies, repeaters, microwave relay stations, submarine cables , Optical cable underwater equipment, etc., not only require high temperature resistance, but also withstand severe cold, and require that the equipment can work reliably and stably. Therefore, the material is required to have a wide temperature range from -40°C to +140°C, even to 160°C, which requires the material to have high magnetic induction and low power loss from low temperature to high temperature. [0003] Although the powe...

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Problems solved by technology

In recent years, in the industry, in order to obtain high-performance power ferrite materials for 5G applications in communication and network facilities, technicians have done a lot of research work, which can be described as fruitful. Wide temperature, low loss, high magnetic flux density MnZn power ferrite and its preparation method, under the conditions of 100kHz and 200mT, the power consumption of the ultra-wide temperature, low loss and high magnetic flux density MnZn power ferrite at 25°C is ≤390mW / cm 3 , 120°C power consumption ≤ 330mW / cm 3 , 140°C power consumption ≤ 400mW / cm 3 , under the conditions of 1194A / m, 50Hz, the saturation magnetic flux density at 25°C ≥ 540, this material has a good wide temperature and low temperature Loss performance, but does not show power loss characteristics in a wider range up to 160°C

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