Abstract
The magnetic properties of (Pr1−xSmx)2Fe14B melt-spun ribbons with varying x from 0 to 1.0 have been studied. The optimum magnetic property of Pr2Fe14B ribbon could be obtained with the surface velocity of copper wheel of 30 m/s. By melt spinning method, the formation of α-Fe impurity phase in the (Pr1−xSmx)2Fe14B samples could be inhibited, and the grain could be aligned. Sm element could be incorporated into Pr2Fe14B main crystalline phase and formed (Pr,Sm)2Fe14B phase with space group P42/mnm. The Curie temperature (Tc) of the (Pr1−xSmx)2Fe14B ribbons increases gradually from 555 to 617 K with the increase of Sm content x. Both the coercivity (Hc) and remanence ratio (Mr/Ms) decrease firstly and then increase with the Sm content increasing. As long as the Sm content x does not exceed 0.1, the squareness of demagnetization curve remains good. The critical value of transition from easy c-axis to easy plane for (Pr1−xSmx)2Fe14B ribbons is x= 0.6. When the Sm content x is up to 0.6, all the Hc and Mr/Ms achieved the minimum value, i.e., 243 Oe and 0.346, respectively.
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Funding
This work was supported by the National Basic Research Program of China (No. 2014CB643703) and the National Natural Science Foundation of China (Grant No. 50261002, Grant No. 50661002, and Grant No. 51161005), Guangxi Natural Science Foundation (Grant No. 2015GXNSFAA139249 and Grant No. 2016GXNSFGA380001), National Natural Science Funds for Young Scholar of China (Grant No. 51601044), and the National Key Research and Development Program of China (Grant No. 2016YFB0700901).
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Xu, C., Chen, K., Gu, Z. et al. Magnetic Properties of (Pr1−xSmx)2Fe14B Melt-Spun Ribbons. J Supercond Nov Magn 31, 3705–3710 (2018). https://doi.org/10.1007/s10948-018-4645-4
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DOI: https://doi.org/10.1007/s10948-018-4645-4