Intrinsic and hard magnetic properties of (Sm<sub>1-x</sub>R<sub>x</sub>)-Fe-Co-V alloys (R = Gd, Zr, and Y)
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- doe_osti · checked 2024-06-06
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SmFe<sub>12</sub>-based compounds with the ThMn<sub>12</sub>-type structure have a great potential as future rare-earth-lean permanent magnets. However, their reliance on stabilizing non-magnetic elements has impeded practical applications. Therefore, elements such as Gd, Y, and Zr have gained popularity as candidates to minimize the need for stabilizing elements by reducing the formation energy of the ThMn<sub>12</sub> (1:12) phase. Here, this study examines the effect of Gd, Y, and Zr on the intrinsic and hard magnetic properties in (Sm<sub>1-x</sub>R<sub>x</sub>)<sub>1.2</sub>Fe<sub>8.4</sub>Co<sub>2.1</sub>V<sub>1.5</sub> (or with nominal composition of (Sm<sub>1-x</sub>R<sub>x</sub>)<sub>9.1</sub>Fe<sub>63.6</sub>Co<sub>15.9</sub>V<sub>11.4</sub>) with a single 1:12 phase for 0 ≤ x ≤ 0.3. Notably, samples substituted with Gd exhibit an enhanced temperature dependence of the magnetic properties.. Authors: Xu, Yitong [University of Delaware, Newark, DE (United States); University of Delaware] (ORCID:0000000240451469); Hadjipanayis, George C. [University of Delaware, Newark, DE (United States); Northeastern University, Boston, MA (United States)]. DOE Contract: SC0022168. Subjects: 36 MATERIALS SCIENCE; Rare-earth-lean magnets; ThMn12 structure; bulk alloys; coercivity; melt-spinning; ribbons