## 5 Discussion and Conclusions
The calculated intrinsic properties of the magnets suggested in ref. [3, 4] and in this paper are reported in Table 5 in conjunction with the experimental data of Nd\({}_{2}\)Fe\({}_{14}\)B, SmCo\({}_{5}\), and YCo\({}_{5}\) magnets for comparison. All four suggested permanent magnets have a Curie temperature significantly higher than that of the Neomax (Nd\({}_{2}\)Fe\({}_{14}\)B), \(T_{c}\)\(\approx\) 588 K, spanning from 785 K to 1103 K. In addition,their maximum energy products are significantly higher than that of the commercially used SmCo\({}_{5}\) and YCo\({}_{5}\) magnets (231 kJ/m\({}^{3}\) and 224 kJ/m\({}^{3}\), correspondingly), reaching a maximum value of 365 kJ/m\({}^{3}\) for YFe\({}_{3}\)Co\({}_{2}\). Our calculated (Table 4, LDA) MAEs for YFe\({}_{3}\)CoNi magnet is not much smaller than that of YCo\({}_{5}\) magnet (10.6 MJ/m\({}^{3}\) and 13.5 MJ/m\({}^{3}\), correspondingly). Although the cobalt price plunged from more than 630 RMB/kg (May 2018) to 282 RMB/kg (June 2020) during the last two years, it is unlikely it will reach its record low value of approximately 157 RMB/kg (June 2016) as the global electric car market (production) continues to grow at an accelerated pace. Indeed, cobalt remains a necessary component in electric vehicle lithium-ion batteries, e.g., LiCoO\({}_{2}\), and cobalt costs will probably rise as a result of anticipated demands for lithium-ion batteries, which consume more than 70% of total cobalt mining. Considering SmFe\({}_{3}\)CoNi and YFe\({}_{3}\)CoNi magnets comprise 80% less Co than their SmCo\({}_{5}\) and YCo\({}_{5}\) precursors, maturing of these magnets becomes even more captivating from the current economic viewpoint. In conclusion, we showed that replacing part of cobalt with iron in SmCo\({}_{5}\) and YCo\({}_{5}\) magnets stabilized with a small portion of nickel results in novel permanent magnets that we consider to be conceivably synthesized. They are anticipated to have outstanding magnetic properties, a big maximum energy product, a strong magnetic anisotropy, and an exceptionally high Curie temperature. However, it is very important to emphasize that, although these three intrinsic parameters are necessary to be large for an efficient permanent magnet, this is not a sufficient condition. It is also necessary to optimize the microstructure of the alloys in order to optimize the extrinsic magnetic properties. Conceptualization, A.L. ; methodology, A.L., P.S., A.P., E.E.M. ; writing-review and editing, A.L., P.S., A.P., E.E.M. All authors have read and agreed to the published version of the manuscript. This research is supported by the Critical Materials Institute, an Energy Innovation Hub funded by the US Department of Energy, Office of Energy Efficiency and Renewable Energy, Advanced Manufacturing Office. The work is performed under the auspices of the US Department of Energy by the Lawrence Livermore National Laboratory under Contract No. DE-AC52-07 NA27344. A.L. thanks [PERSON], [PERSON], [PERSON], and [PERSON] for technical support. A.P. and A.L. thank the dedication, responsiveness, and expertise of the staff of the LLNL Research Library. The authors declare no conflict of interest.