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Method for adjusting coercive force of garnet torque magnetic ferrite material
The invention discloses a method for adjusting the coercivity of a garnet torque magnetic ferrite material, Fe3+ in the garnet torque magnetic ferrite material is jointly substituted by Co2+-Si4 + ions, the composition chemical formula of the garnet torque magnetic ferrite material is Y3-a-2c-hGdhCaa+2cAaFe5-a-b-c-2[sigma]-[theta](CoSi)[sigma]MnbVcO12, wherein A is tetravalent ions Sn4+ and Zr4+, 0<=h<3, 0< = l < 3, 0 < m < 3, 0 < p < 0.15, 0 < alpha < 0.06 and 0 < theta < 0.5; local uniaxial anisotropy is superposed on cubic anisotropy, so the domain wall generates a freezing effect, an irreversible domain wall displacement pinning field mechanism of coercive force is generated, and the purpose of adjusting the coercive force of the garnet ferrite material is achieved.
本发明公开了一种调整石榴石旋矩磁铁氧体材料矫顽力的方法，用Co2+‑Si4+离子联合取代石榴石铁氧体材料中的Fe3+离子，其组成化学式为Y3‑a‑2c‑hGdhCaa+2cAaFe5‑a‑b‑c‑2σ‑θ(CoSi)σMnbVcO12，其中A为4价离子Sn4+和Zr4+，0＜a≤3，0≤h＜3，0＜b＜1，0＜c＜1，0＜σ＜0.06，0＜θ＜0.5，θ为缺铁量，或者先向石榴石铁氧体材料中添加Mn3+离子，调节材料的剩磁比，再用Co2+‑Si4+离子联合取代石榴石铁氧体材料中的Fe3+离子，其组成化学式为Y3‑lGdlAlm(CoSi)αMnpFe5‑m‑p‑2α‑θO12，其中0≤l＜3，0＜m＜3，0＜p＜0.15，0＜α＜0.06，0＜θ＜0.5，在立方各向异性上叠加了局部单轴各向异性，使畴壁产生了冻结效果，产生了矫顽力的不可逆畴壁位移钉扎场机制，达到了调节石榴石铁氧体材料矫顽力的目的。
Method for adjusting coercive force of garnet torque magnetic ferrite material
The invention discloses a method for adjusting the coercivity of a garnet torque magnetic ferrite material, Fe3+ in the garnet torque magnetic ferrite material is jointly substituted by Co2+-Si4 + ions, the composition chemical formula of the garnet torque magnetic ferrite material is Y3-a-2c-hGdhCaa+2cAaFe5-a-b-c-2[sigma]-[theta](CoSi)[sigma]MnbVcO12, wherein A is tetravalent ions Sn4+ and Zr4+, 0<=h<3, 0< = l < 3, 0 < m < 3, 0 < p < 0.15, 0 < alpha < 0.06 and 0 < theta < 0.5; local uniaxial anisotropy is superposed on cubic anisotropy, so the domain wall generates a freezing effect, an irreversible domain wall displacement pinning field mechanism of coercive force is generated, and the purpose of adjusting the coercive force of the garnet ferrite material is achieved.
本发明公开了一种调整石榴石旋矩磁铁氧体材料矫顽力的方法，用Co2+‑Si4+离子联合取代石榴石铁氧体材料中的Fe3+离子，其组成化学式为Y3‑a‑2c‑hGdhCaa+2cAaFe5‑a‑b‑c‑2σ‑θ(CoSi)σMnbVcO12，其中A为4价离子Sn4+和Zr4+，0＜a≤3，0≤h＜3，0＜b＜1，0＜c＜1，0＜σ＜0.06，0＜θ＜0.5，θ为缺铁量，或者先向石榴石铁氧体材料中添加Mn3+离子，调节材料的剩磁比，再用Co2+‑Si4+离子联合取代石榴石铁氧体材料中的Fe3+离子，其组成化学式为Y3‑lGdlAlm(CoSi)αMnpFe5‑m‑p‑2α‑θO12，其中0≤l＜3，0＜m＜3，0＜p＜0.15，0＜α＜0.06，0＜θ＜0.5，在立方各向异性上叠加了局部单轴各向异性，使畴壁产生了冻结效果，产生了矫顽力的不可逆畴壁位移钉扎场机制，达到了调节石榴石铁氧体材料矫顽力的目的。
Method for adjusting coercive force of garnet torque magnetic ferrite material
一种调整石榴石旋矩磁铁氧体材料矫顽力的方法
WANG WENXIN (author) / HUANG FANYU (author) / YANG LEI (author) / WENG ZHAOPING (author) / LI ZHIQI (author)
2022-01-18
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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