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Hexagonal magnetoplumbite permanent magnetic ferrite material and preparation method thereof
The invention relates to the technical field of ferrite material preparation, and discloses a hexagonal magnetoplumbite permanent magnetic ferrite material and a preparation method thereof. The general formula of the permanent magnetic ferrite material is A1-x-yCaxRyFe2n-zMzO19, wherein A is Sr or Sr and Ba, R comprises La, and M comprises Co; and x ranges from 0.15 to 0.4, y ranges from 0.3 to 0.5, z ranges from 0.25 to 0.45, and n ranges from 5.3 to 5.7. The preparation method comprises the steps of burdening, presintering, ball milling, forming and sintering. On the basis of hexagonal Sr ferrite, La<3+> ions and Ca<2+> ions are adopted to jointly replace the position of Sr<2+>, damage to the crystal structure of the magnet is avoided, the substitution amount of Co<2+> ions is effectively increased, and the prepared permanent magnetic ferrite material can obtain high residual magnetism and intrinsic coercive force at the same time.
本发明涉及铁氧体材料制备技术领域，公开了一种六角磁铅石永磁铁氧体材料及其制备方法，永磁铁氧体材料通式为ACaRFeMO，其中：A为Sr或者Sr和Ba，R中包括La，M中包括Co；x为0.15~0.4，y为0.3~0.5，z为0.25~0.45，n为5.3~5.7。制备方法为：配料、预烧、球磨、成型、烧结。本发明以六角Sr铁氧体为基础，采用La离子与Ca离子共同取代Sr的位置，避免了磁体晶体结构的破坏，有效的提高了Co离子的代换量，使得制得的永磁铁氧体材料同时获得高的剩磁和内禀矫顽力。
Hexagonal magnetoplumbite permanent magnetic ferrite material and preparation method thereof
The invention relates to the technical field of ferrite material preparation, and discloses a hexagonal magnetoplumbite permanent magnetic ferrite material and a preparation method thereof. The general formula of the permanent magnetic ferrite material is A1-x-yCaxRyFe2n-zMzO19, wherein A is Sr or Sr and Ba, R comprises La, and M comprises Co; and x ranges from 0.15 to 0.4, y ranges from 0.3 to 0.5, z ranges from 0.25 to 0.45, and n ranges from 5.3 to 5.7. The preparation method comprises the steps of burdening, presintering, ball milling, forming and sintering. On the basis of hexagonal Sr ferrite, La<3+> ions and Ca<2+> ions are adopted to jointly replace the position of Sr<2+>, damage to the crystal structure of the magnet is avoided, the substitution amount of Co<2+> ions is effectively increased, and the prepared permanent magnetic ferrite material can obtain high residual magnetism and intrinsic coercive force at the same time.
本发明涉及铁氧体材料制备技术领域，公开了一种六角磁铅石永磁铁氧体材料及其制备方法，永磁铁氧体材料通式为ACaRFeMO，其中：A为Sr或者Sr和Ba，R中包括La，M中包括Co；x为0.15~0.4，y为0.3~0.5，z为0.25~0.45，n为5.3~5.7。制备方法为：配料、预烧、球磨、成型、烧结。本发明以六角Sr铁氧体为基础，采用La离子与Ca离子共同取代Sr的位置，避免了磁体晶体结构的破坏，有效的提高了Co离子的代换量，使得制得的永磁铁氧体材料同时获得高的剩磁和内禀矫顽力。
Hexagonal magnetoplumbite permanent magnetic ferrite material and preparation method thereof
一种六角磁铅石永磁铁氧体材料及其制备方法
YANG WUGUO (author) / SHENTU JIN'ANG (author) / FANG SHENGXIANG (author) / WU SAIHANG (author) / HE ZHENYU (author)
2020-07-03
Patent
Electronic Resource
Chinese
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