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High-power low-loss NiCuZn microwave ferrite material and preparation method thereof
The invention discloses a high-power low-loss NiCuZn microwave ferrite material and a preparation method thereof, and belongs to the technical field of microwave ferrite material preparation. By substituting fast relaxation ions Co < 2 + > and Ho < 3 + >, the fast relaxation ions are introduced to shorten the relaxation time, grains can be refined, and a dual effect is formed for improving the spin wave line width delta Hk, so that the material can bear higher peak power. Meanwhile, more than a certain amount of Ho < 3 + > is substituted, so that a main lattice is in an iron-deficient state, further Fe < 2 + > and a related electron transfer mechanism are inhibited, tan delta epsilon is reduced, and the dielectric property of the NiCuZn microwave ferrite is improved. The saturation magnetization 4 pi Ms of the high-power low-loss NiCuZn microwave ferrite is stabilized at 4.9 kGs +/-5%, the ferromagnetic resonance line width delta H is 120-235Oe, the dielectric loss tan delta epsilon is less than or equal to 3.81 * 10 <-4 >, the spin wave line width delta Hk is 24.8-33.0 Oe, and the high-power low-loss NiCuZn microwave ferrite has the advantages of high spin wave line width delta Hk, low ferromagnetic resonance line width delta H and lower dielectric loss tan delta epsilon.
该发明公开了一种高功率低损耗NiCuZn微波铁氧体材料及其制备方法，属于微波铁氧体材料制备技术领域。通过进行快弛豫离子Co2+和Ho3+取代，既引入快弛豫离子缩短弛豫时间，又可细化晶粒，对提高自旋波线宽ΔHk形成双重效应，使材料能够承受更高的峰值功率。同时，超过一定量的Ho3+取代使主晶格处于缺铁状态，进而抑制Fe2+及相关电子转移机制，降低tanδε，改善NiCuZn微波铁氧体的介电性能。本发明制备的高功率低损耗NiCuZn微波铁氧体饱和磁化强度4πMs稳定在4.9kGs±5％，有较小的铁磁共振线宽ΔH：120～235Oe，较低的介电损耗tanδε：≤3.81×10‑4，自旋波线宽ΔHk在24.8～33.0Oe范围内，兼具高自旋波线宽ΔHk、低铁磁共振线宽ΔH以及更低的介电损耗tanδε。
High-power low-loss NiCuZn microwave ferrite material and preparation method thereof
The invention discloses a high-power low-loss NiCuZn microwave ferrite material and a preparation method thereof, and belongs to the technical field of microwave ferrite material preparation. By substituting fast relaxation ions Co < 2 + > and Ho < 3 + >, the fast relaxation ions are introduced to shorten the relaxation time, grains can be refined, and a dual effect is formed for improving the spin wave line width delta Hk, so that the material can bear higher peak power. Meanwhile, more than a certain amount of Ho < 3 + > is substituted, so that a main lattice is in an iron-deficient state, further Fe < 2 + > and a related electron transfer mechanism are inhibited, tan delta epsilon is reduced, and the dielectric property of the NiCuZn microwave ferrite is improved. The saturation magnetization 4 pi Ms of the high-power low-loss NiCuZn microwave ferrite is stabilized at 4.9 kGs +/-5%, the ferromagnetic resonance line width delta H is 120-235Oe, the dielectric loss tan delta epsilon is less than or equal to 3.81 * 10 <-4 >, the spin wave line width delta Hk is 24.8-33.0 Oe, and the high-power low-loss NiCuZn microwave ferrite has the advantages of high spin wave line width delta Hk, low ferromagnetic resonance line width delta H and lower dielectric loss tan delta epsilon.
该发明公开了一种高功率低损耗NiCuZn微波铁氧体材料及其制备方法，属于微波铁氧体材料制备技术领域。通过进行快弛豫离子Co2+和Ho3+取代，既引入快弛豫离子缩短弛豫时间，又可细化晶粒，对提高自旋波线宽ΔHk形成双重效应，使材料能够承受更高的峰值功率。同时，超过一定量的Ho3+取代使主晶格处于缺铁状态，进而抑制Fe2+及相关电子转移机制，降低tanδε，改善NiCuZn微波铁氧体的介电性能。本发明制备的高功率低损耗NiCuZn微波铁氧体饱和磁化强度4πMs稳定在4.9kGs±5％，有较小的铁磁共振线宽ΔH：120～235Oe，较低的介电损耗tanδε：≤3.81×10‑4，自旋波线宽ΔHk在24.8～33.0Oe范围内，兼具高自旋波线宽ΔHk、低铁磁共振线宽ΔH以及更低的介电损耗tanδε。
High-power low-loss NiCuZn microwave ferrite material and preparation method thereof
高功率低损耗NiCuZn微波铁氧体材料及其制备方法
ZHANG HANYU (author) / YU ZHONG (author) / WANG HONG (author) / JIANG XIAONA (author) / DOU HAIZHI (author) / WU CHUANJIAN (author) / LI QIFAN (author) / SUN KE (author) / LAN ZHONGWEN (author) / LI ZIYU (author)
2023-11-28
Patent
Electronic Resource
Chinese
NICUZN FERRITE MATERIAL, AND PREPARATION METHOD THEREFOR AND USE THEREOF
| European Patent Office | 2024