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Self-biased hexagonal ferrite gyromagnetic material and preparation method thereof
The invention provides a self-biased hexagonal ferrite gyromagnetic material and a preparation method thereof, the material is a lanthanum, cobalt and zinc doped uniaxial M-type hexagonal barium ferrite material, the structural formula is La < 0.325 > Ba < 1-0.325 > O < 6 > Fe < 2-0.325/6 > Co < 0.325/6 > Zn < 0.325/6-x/6 > O3, and x is greater than or equal to 0.2 and less than or equal to 0.8. According to the preparation method, stable gas nitrogen is introduced into the sintering furnace in the pre-sintering process, so that the valence of multivalent ions is stable in the pre-sintering process, the intrinsic characteristics of the material are ensured, the material has adjustable saturation magnetization and magnetocrystalline anisotropy field, and through the highly optimized pre-sintering and orientation forming process, the preparation method is simple, and the preparation cost is low. The uniaxial hexagonal ferrite material with an ordered magnetic texture, high orientation along the c axis, high remanence ratio, high hysteresis loop squareness ratio and lower porosity is prepared, the ferromagnetic resonance line width is effectively reduced, and the uniaxial hexagonal ferrite material has a wide prospect in the application field of self-biased circulators.
本发明提供一种自偏置六角铁氧体旋磁材料及制备方法，材料为镧、钴、锌掺杂的单轴M型六角钡铁氧体材料，结构式为La0.325Ba1‑0.325O·6Fe2‑0.325/6Co0.325/6Zn0.325/6‑x/6O3，0.2≤x≤0.8。本发明在预烧过程中通过向烧结炉中通入稳定性气体氮气，使得预烧烧结过程中多价态离子的化合价稳定，保证了材料的本征特性，具有可调控的饱和磁化强度和磁晶各向异性场，通过高优化的预烧烧结、取向成型工艺，制备出了有序磁织构，沿c轴高度取向，具有高剩磁比，高磁滞回线矩形比，较低孔隙率单轴六角铁氧体材料，有效的降低了铁磁共振线宽，在自偏置环行器应用领域具有广阔的前景。
Self-biased hexagonal ferrite gyromagnetic material and preparation method thereof
The invention provides a self-biased hexagonal ferrite gyromagnetic material and a preparation method thereof, the material is a lanthanum, cobalt and zinc doped uniaxial M-type hexagonal barium ferrite material, the structural formula is La < 0.325 > Ba < 1-0.325 > O < 6 > Fe < 2-0.325/6 > Co < 0.325/6 > Zn < 0.325/6-x/6 > O3, and x is greater than or equal to 0.2 and less than or equal to 0.8. According to the preparation method, stable gas nitrogen is introduced into the sintering furnace in the pre-sintering process, so that the valence of multivalent ions is stable in the pre-sintering process, the intrinsic characteristics of the material are ensured, the material has adjustable saturation magnetization and magnetocrystalline anisotropy field, and through the highly optimized pre-sintering and orientation forming process, the preparation method is simple, and the preparation cost is low. The uniaxial hexagonal ferrite material with an ordered magnetic texture, high orientation along the c axis, high remanence ratio, high hysteresis loop squareness ratio and lower porosity is prepared, the ferromagnetic resonance line width is effectively reduced, and the uniaxial hexagonal ferrite material has a wide prospect in the application field of self-biased circulators.
本发明提供一种自偏置六角铁氧体旋磁材料及制备方法，材料为镧、钴、锌掺杂的单轴M型六角钡铁氧体材料，结构式为La0.325Ba1‑0.325O·6Fe2‑0.325/6Co0.325/6Zn0.325/6‑x/6O3，0.2≤x≤0.8。本发明在预烧过程中通过向烧结炉中通入稳定性气体氮气，使得预烧烧结过程中多价态离子的化合价稳定，保证了材料的本征特性，具有可调控的饱和磁化强度和磁晶各向异性场，通过高优化的预烧烧结、取向成型工艺，制备出了有序磁织构，沿c轴高度取向，具有高剩磁比，高磁滞回线矩形比，较低孔隙率单轴六角铁氧体材料，有效的降低了铁磁共振线宽，在自偏置环行器应用领域具有广阔的前景。
Self-biased hexagonal ferrite gyromagnetic material and preparation method thereof
自偏置六角铁氧体旋磁材料及其制备方法
LIU YINGLI (Autor:in) / LIU CHIYE (Autor:in) / YIN QISHENG (Autor:in) / LU SHIFAN (Autor:in) / CHEN JIANFENG (Autor:in) / WANG YUZHONG (Autor:in) / WU JIAN (Autor:in)
06.06.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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