Phase formation and magnetocaloric effect in (Pr,Nd)-Fe alloys prepared by rapidly quenched method
Institute of Materials Science, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Ha Noi, Viet Nam
2 Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Ha Noi, Viet Nam
3 Hong Duc University, 565 Quang Trung, Dong Ve, Thanh Hoa, Viet Nam
4 Kotelnikov Institute of Radio-engineering and Electronics of RAS, Moscow, Russia
5 Department of Physics, Chungbuk National University, Cheongju 361 - 763, South Korea
Corresponding author: email@example.com
Published online: 4 July 2018
In this work, Pr2-xNdxFe17 (x = 0 - 2) ribbons with thickness of about 15 μm were prepared by melt-spinning method. The alloy ribbons were then annealed at different temperatures (900 - 1100°C) for various time (0.25 - 2 h). The formation of the (Pr,Nd)2Fe17 (2:17) crystalline phase in the alloys strongly depends on the Pr/Nd ratio and annealing conditions. Annealing time for the completed formation of the 2:17 phase in the rapidly quenched ribbons is greatly reduced in comparison with that of bulk alloys. Curie temperature, TC, of the alloys can be controlled in room temperature region by changing Pr/Nd ratio. Maximum magnetic entropy change (|ΔSm|max) and full width at haft the maximum peak (FWHM) of the magnetic entropy change of the alloys were respectively found to be larger than 1.5 J.kg−1K−1 and 40 K in room temperature region with magetic field change ΔH = 12 kOe.
© The Authors, published by EDP Sciences, 2018
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