Magnetic properties and coercivity mechanism of Sm1-xPrxCo5 (x=0-0.6) nanoflakes prepared by surfactant-assisted ball milling
Magnetic properties and coercivity mechanism of Sm1-xPrxCo5 (x=0-0.6) nanoflakes prepared by surfactant-assisted ball milling
复制标题
表面活性剂辅助球磨制备Sm1-xPrxCo5 (x=0-0.6)纳米片的磁性能及矫顽力机制
DOI：
10.1063/1.4944401
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发表时间：
2016-03
期刊：
影响因子：
1.6
通讯作者：
Lu Q. M.
中科院分区：
文献类型：
--
作者：
Xu M. L.;Yue M.;Wu Q.;Li Y. Q.;Lu Q. M.
采用表面活性剂辅助高能球磨(SAHEBM)法制备了具有CaCu5结构的Sm1-xPrxCo5(x=0-0.6)纳米晶。用X射线衍射仪和振动样品磁强计研究了Sm1-xPrxCo5(x=0-0.6)纳米晶的晶体结构和磁性。系统研究了Pr掺杂对Sm1-xPrxCo5纳米晶的结构、磁性能和矫顽力机制的影响。X射线衍射结果表明，所有样品均为六方相CaCu5型(Sm，Pr)1Co5主相和(Sm，Pr)2Co7杂质相，磁取向后均表现出较强的(00l)织构。随着Pr含量的增加，剩磁先增大后略有减小，而各向异性场(HA)和Hi单调减小。当Pr含量x=0.4时，片状样品的最大能积[(BH)max]先增大，在24.4MGOe处达到峰值，然后又下降。磁化行为分析表明，薄膜的磁化机制主要由不均匀的磁化壁钉扎控制，钉扎强度随Pr含量的增加而减弱，表明HA对磁化强度有很大的影响。
Sm1-xPrxCo5 (x=0-0.6) nanoflakes with CaCu5structure were successfully prepared by surfactant-assisted high-energy ball milling (SAHEBM). The crystal structure and magnetic properties of Sm1-xPrxCo5 (x=0-0.6) nanoflakes were studied by X-ray diffraction and vibrating sample magnetometer. Effects of Pr addition on the structure, magnetic properties and coercivity mechanism of Sm1-xPrxCo5 nanoflakes were systematically investigated. XRD results show that all the nanoflakes have a hexagonal CaCu5-type (Sm, Pr)1Co5 main phase and the (Sm, Pr)2Co7 impurity phase, and all of the samples exhibit a strong (00l) texture after magnetic alignment. As the Pr content increases, remanence firstly increases, then slightly reduced, while anisotropy field (HA) and Hci of decrease monotonically. Maximum energy product [(BH)max] of the flakes increases first, peaks at 24.4 MGOe with Pr content of x = 0.4, then drops again. Magnetization behavior analysis indicate that the coercivity mechanism is mainly controlled by inhomogeneous domain wall pinning, and the pinning strength weakens with the increased Pr content, suggesting the great influence of HA on the coercivity of flakes.
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影响因子：
2.7
作者：
KRONMULLER, H;DURST, KD;SAGAWA, M
通讯作者：
SAGAWA, M
影响因子：
3.2
作者：
R. Martis;N. Gupta;S. Sankar;V. Rao
通讯作者：
R. Martis;N. Gupta;S. Sankar;V. Rao
影响因子：
8.8
作者：
J. Zuo;M. Yue;Q. Lu;Dongtao Zhang;Xuexu Gao;Jiuxing Zhang;Zhao-Hui Guo;W. Li
通讯作者：
J. Zuo;M. Yue;Q. Lu;Dongtao Zhang;Xuexu Gao;Jiuxing Zhang;Zhao-Hui Guo;W. Li
极性研磨介质中高能球磨制备各向异性 (Sm,Pr)(1)Co-5 基纳米片
影响因子：
6.2
作者：
Xiaohong Li;Guangwei Huang;Yongmei Zhang;Xiangyi Zhang
通讯作者：
Xiangyi Zhang
影响因子：
3.2
作者：
HADJIPANAYIS, GC;KIM, A
通讯作者：
KIM, A