Angular dependence of coercivity of grains in nanocrystalline permanent magnets

doi:10.1088/1674-1056/17/3/063

中国物理B ›› 2008, Vol. 17 ›› Issue (3): 1130-1134.doi: 10.1088/1674-1056/17/3/063

Angular dependence of coercivity of grains in nanocrystalline permanent magnets

龚依民¹, 蓝志环¹, 闫羽¹, 杜晓波¹, 王文全¹, 王学凤¹, 苏峰¹, 卢磊¹, 张之胜¹, 金汉民¹, 温戈辉²

(1)Department of Physics, Jilin University, Changchunrm 130023, China; (2)State Key Laboratory of Superhard Material, Jilin University, Changchun 130023, China

收稿日期:2007-04-03 修回日期:2007-07-18 出版日期:2008-03-04 发布日期:2008-03-04
基金资助:
Project supported by Department of Science and Technology of Jilin Province, China.

Angular dependence of coercivity of grains in nanocrystalline permanent magnets

Gong Yi-Min(龚依民)^a), Lan Zhi-Huan(蓝志环)^a), Yan Yu(闫羽)^a),Du Xiao-Bo(杜晓波)^a)†, Wang Wen-Quan(王文全)^a), Wang Xue-Feng(王学凤)^a), Su Feng(苏峰)^a), Lu Lei(卢磊)^a), Zhang Zhi-Sheng(张之胜)^a),Jin Han-Min(金汉民)^a), and Wen Ge-Hui(温戈辉)^b)

^a Department of Physics, Jilin University, Changchunrm 130023, China; ^b State Key Laboratory of Superhard Material, Jilin University, Changchun 130023, China

Received:2007-04-03 Revised:2007-07-18 Online:2008-03-04 Published:2008-03-04
Supported by:
Project supported by Department of Science and Technology of Jilin Province, China.

摘要/Abstract

摘要： In this paper magnetization remanence curves were studied for nanocrystalline Pr₈Fe₈₇B₅, Pr₁₂Fe₈₂B₆ and Pr₁₅Fe₇₇B₈. Initially the sample was at remanence following saturation along $z$-axis. After rotating the magnet by $5n$ degrees (n=0, 1, ..., 18) a field H was applied along $z$-axis and then decreased to zero, and the remanence J_r^{n} $ was measured as a function of $H$. The curves were compared with those calculated based on the nucleation of reverse domain model and domain wall pinning model. The latter model succeeds in simulation much better than the former, and it is concluded that the magnetization reversal is dominated by domain wall pinning for all the samples. The nucleation mechanism contribution, while remains small, increases with the increase of Pr content.

关键词: nanocrystalline, permanent magnets, magnetization curves, computer simulation

Abstract: In this paper magnetization remanence curves were studied for nanocrystalline Pr₈Fe₈₇B₅, Pr₁₂Fe₈₂B₆ and Pr₁₅Fe₇₇B₈. Initially the sample was at remanence following saturation along $z$-axis. After rotating the magnet by $5n$ degrees ($n$=0, 1, ..., 18) a field H was applied along $z$-axis and then decreased to zero, and the remanence $J_r^n$ was measured as a function of $H$. The curves were compared with those calculated based on the nucleation of reverse domain model and domain wall pinning model. The latter model succeeds in simulation much better than the former, and it is concluded that the magnetization reversal is dominated by domain wall pinning for all the samples. The nucleation mechanism contribution, while remains small, increases with the increase of Pr content.

Key words: nanocrystalline, permanent magnets, magnetization curves, computer simulation

中图分类号: (Magnetization curves, hysteresis, Barkhausen and related effects)

75.60.Ej

75.50.Tt (Fine-particle systems; nanocrystalline materials) 75.50.Ww (Permanent magnets) 75.60.Ch (Domain walls and domain structure)

龚依民, 蓝志环, 闫羽, 杜晓波, 王文全, 王学凤, 苏峰, 卢磊, 张之胜, 金汉民, 温戈辉. Angular dependence of coercivity of grains in nanocrystalline permanent magnets[J]. 中国物理B, 2008, 17(3): 1130-1134.

Gong Yi-Min(龚依民), Lan Zhi-Huan(蓝志环), Yan Yu(闫羽), Du Xiao-Bo(杜晓波), Wang Wen-Quan(王文全), Wang Xue-Feng(王学凤), Su Feng(苏峰), Lu Lei(卢磊), Zhang Zhi-Sheng(张之胜), Jin Han-Min(金汉民), and Wen Ge-Hui(温戈辉) . Angular dependence of coercivity of grains in nanocrystalline permanent magnets[J]. Chin. Phys. B, 2008, 17(3): 1130-1134.

[1]	安敏荣, 宿梦嘉, 邓琼, 宋海洋, 王晨, 尚玉. Anisotropic plasticity of nanocrystalline Ti: A molecular dynamics simulation[J]. 中国物理B, 2020, 29(4): 46201-046201.
[2]	Furhaj Ahmed Sheikh, Muhammad Khalid, Muhammad Shahzad Shifa, H M Noor ul Huda Khan Asghar, Sameen Aslam, Ayesha Perveen, Jalil ur Rehman, Muhammad Azhar Khan, Zaheer Abbas Gilani. Effects of bismuth on structural and dielectric properties of cobalt-cadmium spinel ferrites fabricated via micro-emulsion route[J]. 中国物理B, 2019, 28(8): 88701-088701.
[3]	张艳, 石钰, 张雪峰, 胡凤霞, 孙继荣, 赵同云, 沈保根. Effects of CeO₂ and nano-ZrO₂ agents on the crystallization behavior and mechanism of CaO-Al₂O₃-MgO-SiO₂-based glass ceramics[J]. 中国物理B, 2019, 28(7): 78107-078107.
[4]	宋驰, 孔祥山, 刘长松. First-principles studies on carbon diffusion in tungsten[J]. 中国物理B, 2019, 28(11): 116106-116106.
[5]	徐辉, 刘建军, 叶海涛, D J Coathup, A V Khomich, 胡晓君. Structural and electrical properties of carbon-ion-implanted ultrananocrystalline diamond films[J]. 中国物理B, 2018, 27(9): 96104-096104.
[6]	荣传兵, 沈保根. Nanocrystalline and nanocomposite permanent magnets by melt spinning technique[J]. 中国物理B, 2018, 27(11): 117502-117502.
[7]	Sibel Gokce, Ozhan Kayacan. Study on bi-directional pedestrian movement using ant algorithms[J]. 中国物理B, 2016, 25(1): 10508-010508.
[8]	鲍磊, 张曦, 金雷, 谭志杰. Flexibility of nucleic acids: From DNA to RNA[J]. 中国物理B, 2016, 25(1): 18703-018703.
[9]	王海燕, 林志霆, 韩晶磊, 钟立义, 李国强. Design of patterned sapphire substrates for GaN-based light-emitting diodes[J]. 中国物理B, 2015, 24(6): 67103-067103.
[10]	Abdollah Hajalilou, Mansor Hashim, Reza Ebrahimi-Kahrizsangi, Mohamad Taghi Masoudi. Effect of milling atmosphere on structural and magnetic properties of Ni–Zn ferrite nanocrystalline[J]. , 2015, 24(4): 48102-048102.
[11]	张泳辉, 彭俊辉, 张志勇. Structural modeling of proteins by integrating small-angle x-ray scattering data[J]. 中国物理B, 2015, 24(12): 126101-126101.
[12]	李晓慧, 俞计成, 陆乃彦, 张卫东, 翁雨燕, 顾臻. Confinement-induced nanocrystal alignment of conjugated polymer by the soft-stamped nanoimprint lithography[J]. 中国物理B, 2015, 24(10): 104215-104215.
[13]	张亮, 吕程, Kiet Tieu, 裴林清, 赵星. Effect of stress state on deformation and fracture of nanocrystalline copper：Molecular dynamics simulation[J]. , 2014, 23(9): 98102-098102.
[14]	韩满贵, 郭韦, 吴燕辉, 刘明, Magundappa L. Hadimani. Electromagnetic wave absorbing properties and hyperfine interactions of Fe-Cu-Nb-Si-B nanocomposites[J]. 中国物理B, 2014, 23(8): 83301-083301.
[15]	李山东, 蔡志义, 徐洁, 曹晓琴, 杜洪磊, 薛倩, 高小洋, 谢施名. Enhancement of ferromagnetic resonance in Al₂O₃-doped Co₂FeAl Heusler alloy film prepared by oblique sputtering[J]. 中国物理B, 2014, 23(10): 106201-106201.

Angular dependence of coercivity of grains in nanocrystalline permanent magnets

Angular dependence of coercivity of grains in nanocrystalline permanent magnets

PDF (PC)

赞

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

Metrics

本文评价

推荐阅读 0