Enhancement in hard magnetic properties of (Nd, Pr)–Fe–B melt-spun ribbons

Gandha, Kinjal; Liu, Xubo; Tang, Wei; Nlebedim, I. C.

doi:10.1063/5.0021135

Enhancement in hard magnetic properties of (Nd, Pr)–Fe–B melt-spun ribbons

Journal Article · Fri Oct 16 04:00:00 EDT 2020 · Journal of Applied Physics

DOI:https://doi.org/10.1063/5.0021135· OSTI ID:1677503

^[1]; ^[1]; Tang, Wei ^[2]; ^[1]

Ames Lab., Ames, IA (United States). Critical Materials Inst.
Ames Lab., Ames, IA (United States)

The coercivity of RE₂Fe₁₄B-type permanent magnets is strongly influenced by the microstructural features such as grain boundary (GB) phases as well as grain sizes. Here, we have combined micromagnetic simulations and experiments to elucidate the role of excess RE (Nd/Pr) in determining the resulting hard magnetic properties of Nd–Pr–Fe–B melt-spun ribbons. The intrinsic coercivity (H_c) at room temperature significantly enhanced from 9.7 kOe to 15.3 kOe with the increase in the Nd/Pr content. Furthermore, the effect of non-magnetic grain refining refractory carbide (TiC) on both the microstructure and magnetic hardening was studied. The addition of TiC showed a very high coercivity H_c of up to 19.0 kOe at room temperature. Micromagnetic simulation indicates that the coercivity enhancement is mainly due to the reduction of inter-grain magnetic interaction, which is due to the RE-rich nonmagnetic grain boundary (GB) phase and/or TiC distributed at the GB. This work provides useful information on the roles of non-magnetic grain boundary phases for improving the coercivity of Nd–Pr–Fe–B magnets. Combined with experimental and modeling results, we have discussed the mechanism responsible for the enhancements in coercivity and the suitability of the alloys for high-performance permanent magnet development.

View Accepted Manuscript (DOE)

Research Organization:: Ames Laboratory (AMES), Ames, IA (United States). Critical Materials Institute (CMI)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Advanced Manufacturing Office

Grant/Contract Number:: AC02-07CH11358

OSTI ID:: 1677503

Alternate ID(s):: OSTI ID: 1773550

Report Number(s):: IS--J-10,329

Journal Information:: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 15 Vol. 128; ISSN 0021-8979

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

References (25)

The magnetic properties of nanocrystalline melt spun iron-didymium-boron alloys Sequeira, W. P.; Dobson, S. J.; Buckley, R. A. Materials Letters, Vol. 15, Issue 5-6 https://doi.org/10.1016/0167-577X(93)90099-J	journal	January 1993
The effects of Ti, C, and TiC on the crystallization of amorphous Nd2Fe14B Branagan, D. J.; McCallum, R. W. Journal of Alloys and Compounds, Vol. 245, Issue 1-2 https://doi.org/10.1016/S0925-8388(96)02415-2	journal	November 1996
Changes in glass formation and glass forming ability of Nd2Fe14B by the addition of TiC Branagan, D. J.; McCallum, R. W. Journal of Alloys and Compounds, Vol. 244, Issue 1-2 https://doi.org/10.1016/S0925-8388(96)02419-X	journal	November 1996
The coercivities of nanophase melt-spun PrFeB alloys Mendoza-Suárez, G.; Davies, H. A. Journal of Alloys and Compounds, Vol. 281, Issue 1 https://doi.org/10.1016/S0925-8388(98)00763-4	journal	November 1998
Grain boundary and interface chemistry of an Nd–Fe–B-based sintered magnet Sepehri-Amin, H.; Ohkubo, T.; Shima, T. Acta Materialia, Vol. 60, Issue 3 https://doi.org/10.1016/j.actamat.2011.10.043	journal	February 2012
The practical limits for enhancing magnetic property combinations for bulk nanocrystalline NdFeB alloys through Pr, Co and Dy substitutions Liu, Z. W.; Davies, H. A. Journal of Magnetism and Magnetic Materials, Vol. 313, Issue 2 https://doi.org/10.1016/j.jmmm.2007.02.078	journal	June 2007
Effect of Ti and C additions on structural and magnetic properties of (Pr,Nd)–Fe–B nanocrystalline magnetic materials Murakami, R. K.; Rechenberg, H. R.; Neiva, A. C. Journal of Magnetism and Magnetic Materials, Vol. 320, Issue 14 https://doi.org/10.1016/j.jmmm.2008.02.150	journal	July 2008
Magnetic properties of (Nd,Pr)–Fe–B nanocomposite over quenched and annealed ribbons Ahmad, I.; Davies, H. A.; Kanwal, M. Journal of Magnetism and Magnetic Materials, Vol. 324, Issue 23 https://doi.org/10.1016/j.jmmm.2012.04.022	journal	November 2012
Development of Mischmetal–Fe–Co–B Permanent Magnet Alloys via High-Throughput Methods Chaudhary, Rakesh P.; Gandha, Kinjal H.; Meng, Fanqiang ACS Combinatorial Science, Vol. 22, Issue 5 https://doi.org/10.1021/acscombsci.9b00190	journal	March 2020
Transmission electron microscopy study on Nd-rich phase and grain boundary structure of Nd–Fe–B sintered magnets Shinba, Y.; Konno, T. J.; Ishikawa, K. Journal of Applied Physics, Vol. 97, Issue 5 https://doi.org/10.1063/1.1851017	journal	March 2005
Effect of TiC addition on microstructure and magnetic properties for MRE2(Fe,Co)14B melt-spun ribbons (MRE=Nd+Y+Dy) Tang, W.; Wu, Y. Q.; Dennis, K. W. Journal of Applied Physics, Vol. 99, Issue 8 https://doi.org/10.1063/1.2165109	journal	April 2006
Pr‐Fe and Nd‐Fe‐based materials: A new class of high‐performance permanent magnets (invited) Croat, J. J.; Herbst, J. F.; Lee, R. W. Journal of Applied Physics, Vol. 55, Issue 6 https://doi.org/10.1063/1.333571	journal	March 1984
Didymium‐Fe‐B sintered permanent magnets Okada, M.; Sugimoto, S.; Ishizaka, C. Journal of Applied Physics, Vol. 57, Issue 8 https://doi.org/10.1063/1.334647	journal	April 1985
Magnetization and magnetic anisotropy of R ₂ Fe ₁ ₄ B measured on single crystals Hirosawa, Satoshi; Matsuura, Yutaka; Yamamoto, Hitoshi Journal of Applied Physics, Vol. 59, Issue 3 https://doi.org/10.1063/1.336611	journal	February 1986
Effect of TiC additions to the microstructure and magnetic properties of Nd9.5Fe84.5B6 melt-spun ribbons Kramer, M. J.; Li, C. P.; Dennis, K. W. Journal of Applied Physics, Vol. 83, Issue 11 https://doi.org/10.1063/1.367929	journal	June 1998
Magnetic properties of nanocrystalline didymium (Nd–Pr)–Fe–B alloys Betancourt R., J. I.; Davies, H. A. Journal of Applied Physics, Vol. 85, Issue 8 https://doi.org/10.1063/1.369911	journal	April 1999
The design and verification of MuMax3 Vansteenkiste, Arne; Leliaert, Jonathan; Dvornik, Mykola AIP Advances, Vol. 4, Issue 10 https://doi.org/10.1063/1.4899186	journal	October 2014
Evolution of structural and magnetic properties due to nanocrystallization of mechanically milled amorphous Pr-Co-B powders Ucar, Huseyin; Nlebedim, Ikenna C.; Parans Paranthaman, M. Journal of Applied Physics, Vol. 116, Issue 23 https://doi.org/10.1063/1.4904359	journal	December 2014
New developments in hard magnetic materials Buschow, K. H. J. Reports on Progress in Physics, Vol. 54, Issue 9 https://doi.org/10.1088/0034-4885/54/9/001	journal	September 1991
Fast micromagnetic simulations on GPU—recent advances made with $\mathsf{mumax}^3$ Leliaert, J.; Dvornik, M.; Mulkers, J. Journal of Physics D: Applied Physics, Vol. 51, Issue 12 https://doi.org/10.1088/1361-6463/aaab1c	journal	February 2018
Composition and Microstructure Dependent Spin Reorientation in Nanocrystalline (Nd–Pr)-(Fe–Co)-B Alloys Liu, Z.; Davies, H. A. IEEE Transactions on Magnetics, Vol. 40, Issue 4 https://doi.org/10.1109/TMAG.2004.829206	journal	July 2004
Reducing Dy Content by Y Substitution in Nanocomposite NdFeB Alloys With Enhanced Magnetic Properties and Thermal Stability Liu, Zhongwu; Qian, Dongyan; Zeng, Dechang IEEE Transactions on Magnetics, Vol. 48, Issue 11 https://doi.org/10.1109/TMAG.2012.2202217	journal	November 2012
Effect of Rare-Earth Content on Coercivity and Temperature Stability of Sintered Nd-Fe-B Magnets Prepared by Dual-Alloy Method Fu, Wenbiao; Guo, Shuai; Lin, Chaowei IEEE Transactions on Magnetics, Vol. 49, Issue 7 https://doi.org/10.1109/TMAG.2013.2252156	journal	July 2013
Microstructure and Magnetic Properties of Grain Refined Pr2Co14B Melt-Spun Ribbons Nlebedim, I.; Huang, M.; Sun, K. Magnetochemistry, Vol. 5, Issue 1 https://doi.org/10.3390/magnetochemistry5010006	journal	January 2019
Effect of Boron on Magnetic Properties and Corrosion Resistance of High Energy Magnets Yu, L. Q.; Zhang, Y. P.; Fu, Q. T. Advanced Materials Research, Vol. 79-82 https://doi.org/10.4028/www.scientific.net/AMR.79-82.1043	journal	August 2009

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