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Soft magnetic composite materials are prepared by mixing magnetic materials and insulating materials, which possess both the excellent magnetism of magnetic materials and the low resistivity of insulating materials. They possess broad application prospects in emerging power electronics industries such as photovoltaic inverters, new energy vehicles, and charging stations. The third-generation high-frequency wide bandgap semiconductors, mainly composed of SiC and GaN, have the operating frequency of soft magnetic materials raised to MHz. However, current soft magnetic materials have significant core losses at high frequencies. Therefore, people are focus their attention on developing new soft magnetic composite materials to reduce iron core losses at high frequencies. In this paper, γ'-Fe4N with high resistivity is prepared by nitriding carbonyl iron powders, showing its excellent soft magnetic properties, and the γ'-Fe4N is ball-milled to become easy plane γ'-Fe4N powder. Compared with the none easy plane γ'-Fe4N powders, the none easy plane γ'-Fe4N powders are spherical in shape, the easy plane γ'-Fe4N powders exhibit a high aspect to thickness ratio in sheet shape. The obtained easy plane powders are mixed with polyurethane insulation to make the soft magnetic composite. There is a significant difference between the in-plane and out-of-plane hysteresis loop of the magnetostatic easy plane γ'-Fe4N soft magnetic composite, and the in-plane hysteresis loop is more easily magnetized to saturation state. The degree of plane orientation is 98.46%. The fitting analysis results of the Jiles-Atherton model also prove its easy plane characteristic, and has higher effective permeability and lower power loss than the counterparts of the none easy plane γ'-Fe4N composite that is not ball-milled. After loss separation, it is found that in a low frequency range, hysteresis loss is the main loss, while in a high frequency range, the excess loss will surpass the hysteresis loss, acting as the main loss, the magnetostatic easy plane γ'-Fe4N soft magnetic composites material reduces hysteresis loss and excess loss. Comparing with similar soft magnetic composites, the eddy current effect in magnetic iron particles is reduced by nitriding process, and the magnetostatic easy plane γ'-Fe4N soft magnetic composite has excellent high-frequency soft magnetic properties. Magnetostatic easy plane γ'-Fe4N provides a new idea for the high-frequency application of soft magnetic composites matching the third generation wide bandgap semiconductors.
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Keywords:
- γ'-Fe4N /
- nitride /
- ball-milled /
- power loss
[1] Silveyra J M, Ferrara E, Huber D L, Monson T C 2018 Science 362 418
Google Scholar
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Google Scholar
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Qu Z X, Wang Q, Sun Z W, Pan W 2013 Rare Metal Mater. Eng. 42 126
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Lu Q H, Tang X L, Song Y Z, Zuo X W, Han G L, Yan P X, Liu W M 2019 Acta Phys. Sin. 68 118101
[16] 薛德胜, 陈子瑜, 李发伸 1996 兰州大学学报(自然科学版) 32 49
Xue D S, Chen Z Y, Li F S 1996 J. Lanzhou Univ. (Natural Sciences) 32 49
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Google Scholar
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图 1 γ'-Fe4N复合物制备示意图
Figure 1. Schematic diagram of the preparation of γ'-Fe4N composite.
图 2 不同温度、时间下氮化产物的X射线衍射图
Figure 2. X-ray diffraction patterns of nitriding products synthesized under different temperatures and times.
图 3 (a) 非易面γ'-Fe4N颗粒的SEM图像; (b) 易面γ'-Fe4N颗粒的SEM图像; (c) 单个易面γ'-Fe4N颗粒侧面的SEM图像
Figure 3. (a) SEM image of none easy plane γ'-Fe4N particles; (b) SEM image of easy plane γ'-Fe4N particles; (c) SEM image of a single easy plane γ'-Fe4N particle profile.
图 4 磁滞回线的实测及J-A模型拟合结果 (a) 非易面γ'-Fe4N粉末; (b) 易面γ'-Fe4N复合物面内以及面外
Figure 4. Hysteresis loop measured and J-A model fitted: (a) None easy plane γ'-Fe4N powder; (b) in-plane and out-of-plane of easy plane γ'-Fe4N composite.
图 5 (a) 易面和非易面γ'-Fe4N复合物的磁谱实测结果; (b) 易面γ'-Fe4N复合物的磁谱拟合结果与实测结果; (c) 非易面 γ'-Fe4N复合物的磁谱拟合结果及实测结果
Figure 5. (a) Magnetic spectrum measurement of easy plane and none plane γ'-Fe4N composite; (b) magnetic spectrum measurement and fitting results of easy plane γ'-Fe4N composite; (c) magnetic spectrum measurement and fitting results of none easy plane γ'-Fe4N composite.
图 6 B = 8 mT下易面和非易面γ'-Fe4N复合物的损耗 (a) 总损耗; (b) 磁滞损耗; (c) 涡流损耗; (d) 剩余损耗; (e) 非易面γ'-Fe4N复合物的损耗分离结果; (f) 易面γ'-Fe4N复合物的损耗分离结果
Figure 6. Losses of easy plane and none plane γ'-Fe4N composite at B = 8 mT: (a) Total losses; (b) hysteresis losses; (c) eddy current losses; (d) residual losses; (e) depletion separation results of none easy plane γ'-Fe4N composite; (f) depletion separation results of easy plane γ'-Fe4N composite.
图 7 B = 8 mT下的损耗分离 (a) 易面γ'-Fe4N复合物; (b) 非易面γ'-Fe4N复合物
Figure 7. Loss separation at B = 8 mT: (a) Easy plane γ'-Fe4N composite; (b) none easy plane γ'-Fe4N composite.
图 8 Pcv = 500 kW/m3时, 易面γ'-Fe4N复合物的性能因子曲线
Figure 8. Performance factor curve of the easy-plane γ'-Fe4N composite at Pcv = 500 kW/m3.
表 1 非易面γ'-Fe4N粉末及易面γ'-Fe4N的J-A拟合参数
Table 1. J-A fitting parameters of none easy plane γ'-Fe4N powder and easy plane γ'-Fe4N composite.
非易面
γ'-Fe4N易面γ'-Fe4N
(面内)易面γ'-Fe4N
(面外)J-A拟合参数
a/10460.0 3.2 20.0 J-A拟合参数
k/1033.1 4.0 12.0 Mr/(emu·g–1) 3.496 8.840 2.170 Hc/Oe 31.658 51.293 91.460 
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表 2 易面及非易面γ'-Fe4N复合物的磁谱拟合参数
Table 2. Magnetic spectral fitting parameters of easy plane γ'-Fe4N and none easy plane γ'-Fe4N composite.
畴壁移动 畴内转动 $ {\chi }_{{\rm{d}}0} $ $ {\omega }_{{\rm{d}}0}/10 $10 β/1010 $ {\chi }_{{\rm{s}}0} $ $ {\omega }_{{\rm{s}}0}/10 $10 $ \vartheta $ 易面γ'-Fe4N
复合物6.0 0.3 5.8 4.7 0.7 1.2 非易面γ'-Fe4N
复合物5.8 4.0 10.0 3.7 1.3 1.5
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表 3 非易面γ'-Fe4N复合材料和易面γ'-Fe4N复合物损耗分离的拟合参数
Table 3. Simulated parameters for loss separation of none easy plane γ'-Fe4N composite and easy plane γ'-Fe4N composite.
Physt/(kW·m–3) Peddy/(kW·m–3) Pex/(kW·m–3) chyst h $ {c}_{{\rm{e}}{\rm{d}}{\rm{d}}{\rm{y}}}^{{\rm{i}}{\rm{n}}{\rm{t}}{\rm{e}}{\rm{r}}} $/10–10 $ {c}_{{\rm{e}}{\rm{d}}{\rm{d}}{\rm{y}}}^{{\rm{i}}{\rm{n}}{\rm{t}}{\rm{r}}{\rm{a}}} $/10–6 cexc x y 非易面γ'-Fe4N复合物 3.6383 2.1652 9.24 0.424 1.1965 2.1431 1.0731 易面γ'-Fe4N复合物 5.3096 2.3315 5.00 1.412 0.027678 2.1479 1.3235
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[1] Silveyra J M, Ferrara E, Huber D L, Monson T C 2018 Science 362 418
Google Scholar
[2] Périgo E A, Weidenfeller B, Kollár P, Füzer J 2018 Appl. Phys. Rev. 5 031301
Google Scholar
[3] Sun Z W 2013 M. S. Thesis (Beijing: Beijing University of Technology) (in Chinese)
[4] Shirane G, Takei W J, Ruby S L 1962 Phys. Rev. 126 49
Google Scholar
[5] Peng X, Yu S, Chang J, Ge M, Li J, Ellis T, Yang Y, Xu J, Hong B, Jin D, Jin H, Wang X, Ge H 2020 J. Magn. Magn. Mater. 500 166407
Google Scholar
[6] Wu X L, Zhong W, Jiang H Y, Tang N J, Zou W Q, Du Y W 2004 J. Magn. Magn. Mater. 281 77
Google Scholar
[7] Wallace W E, Huang M Q 1994 J. Appl. Phys. 76 6648
Google Scholar
[8] Kim T K, Takahashi M 1972 Appl. Phys. Lett. 20 492
Google Scholar
[9] Coey J M D, Smith P A I 1999 J. Magn. Magn. Mater. 200 405
Google Scholar
[10] 成泰民, 孙腾, 张龙燕, 张新欣, 朱林, 李林 2015 64 156301
Google Scholar
Cheng T M, Sun T, Zhang L Y, Zhang X X, Zhu L, Li L 2015 Acta Phys. Sin. 64 156301
Google Scholar
[11] 李贞, 李庆民, 李长云, 孙秋芹, 娄杰 2011 中国电机工程学报 31 124
Li Z, Li Q M, Li C Y, Sun Q Q, Lou J 2011 Proceed. CSEE 31 124
[12] Yu M J, Xu Y, Mao Q, Li F, Wang C 2016 J. Alloys Compd. 656 362
Google Scholar
[13] 瞿志学, 王群, 孙忠巍, 潘伟 2013 稀有金属材料与工程 42 126
Google Scholar
Qu Z X, Wang Q, Sun Z W, Pan W 2013 Rare Metal Mater. Eng. 42 126
Google Scholar
[14] Narahara A, Ito K, Suemasu T, Takahashi Y K, Ranajikanth A, Hono K 2009 Appl. Phys. Lett. 94 202502
Google Scholar
[15] 卢启海, 唐晓莉, 宋玉哲, 左显维, 韩根亮, 闫鹏勋, 刘维民 2019 68 118101
Lu Q H, Tang X L, Song Y Z, Zuo X W, Han G L, Yan P X, Liu W M 2019 Acta Phys. Sin. 68 118101
[16] 薛德胜, 陈子瑜, 李发伸 1996 兰州大学学报(自然科学版) 32 49
Xue D S, Chen Z Y, Li F S 1996 J. Lanzhou Univ. (Natural Sciences) 32 49
[17] Zhao Z J, Xue D S, Li F S 2001 J. Magn. Magn. Mater. 232 155
Google Scholar
[18] 薛德胜, 李发伸 1997 中国科学(A辑) 27 275
Xue D S, Li F S 1997 Sci. China (Ser. A) 27 275
[19] Zhang C, Liu X, Li M, Liu C, Li H, Meng X, Rehman K M U 2017 J. Mater. Sci. Mater. Electron. 29 1254
[20] Wang G W 2022 Ph. D. Dissertation (Lanzhou: Lanzhou University) (in Chinese)
[21] Wu P, Zhang Y D, Hao H B, Qiao L, Liu X, Wang T, Li F S 2022 J. Magn. Magn. Mater. 549 168962
Google Scholar
[22] Takanori Tsutaoka 2003 J. Appl. Phys. 93 2789
Google Scholar
[23] Kollár P, Vojtek V, Birčáková Z, Füzer J, Fáberová M, Bureš R 2014 J. Magn. Magn. Mater. 353 65
Google Scholar
[24] Taghvaei A H, Shokrollahi H, Janghorban K 2009 Mater. Des. 30 3989
Google Scholar
[25] Taghvaei A H, Ebrahimi A, Gheisari K 2010 J. Magn. Magn. Mater. 322 3748
Google Scholar
[26] Chiriac H 2003 IEEE Trans. Magn. 39 3040
Google Scholar
[27] Liu H J, Su H L, Geng W B, Sun Z G, Song T T, Tong X C, Zou Z Q, Wu Y C, Du Y W 2016 J. Supercond. Nov. Magn. 29 463
Google Scholar
[28] 熊政伟, 杨江, 王雨, 杨陆, 管弦, 曹林洪, 王进, 高志鹏 2022 71 157502
Google Scholar
Xiong Z W, Yang J, Wang Y, Yang L, Guan X, Cao L H, Wang J, Gao Z P 2022 Acta Phys. Sin. 71 157502
Google Scholar
[29] Yao Z, Peng Y, Xia C, Yi X, Mao S, Zhang M 2020 J. Alloys Compd. 827 154345
Google Scholar
[30] Peng Y, Yi Y, Li L, Ai H, Wang X, Chen L 2017 J. Magn. Magn. Mater. 428 148
Google Scholar
[31] Liu J H, Peng X L, Hong B, Xu J C, Han Y B, Li J, Ge H L, Yang Y T, Wang X Q 2021 J. Magn. Magn. Mater. 532 167994
Google Scholar
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