Combinatorial sputtering synthesis of TbCu7-type Sm-Fe based compounds: A study on phase, composition, and extrinsic magnetic properties.
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| Title: | Combinatorial sputtering synthesis of TbCu7-type Sm-Fe based compounds: A study on phase, composition, and extrinsic magnetic properties. |
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| Authors: | Dilipan, A.R.1,2 (AUTHOR), Sepehri-Amin, H.1,2 (AUTHOR), Modak, R.1 (AUTHOR), Kushwaha, V.K.1 (AUTHOR), Sakuraba, Y.1,2 (AUTHOR), Uchida, K.1,2 (AUTHOR), Hono, K.1,2 (AUTHOR), Takahashi, Y.K.1,2 (AUTHOR) takahashi.yukiko@nims.go.jp |
| Source: | Journal of Alloys & Compounds. Jan2025, Vol. 1010, pN.PAG-N.PAG. 1p. |
| Subjects: | Kerr magneto-optical effect, Scanning transmission electron microscopy, Magnetic properties, Magnetic materials, X-ray fluorescence |
| Abstract: | We investigated the effect of composition on the phase and extrinsic magnetic properties of TbCu 7 -type SmFe-based compounds using a combinatorial sputtering technique. Composition-spread thin films of SmFe x (x =6.4–12.7) and SmFe x N (x =6.8–12.8) were synthesized using a linear shutter-assisted combinatorial sputtering technique. A high-throughput composition, phase, and magnetic characterization were performed on 18 different locations along the film using X-ray diffraction (XRD), X-ray fluorescence (XRF), and magneto-optical Kerr effect (MOKE) magnetometry. The optimal composition with the highest fraction of the main phase was found to be in SmFe 9.8 and SmFe 9.5 N and beyond this composition, the α -Fe secondary ferromagnetic phase emerges. The coercive field and remanence of the SmFe 9.5 N are estimated to be ∼0.8 T and ∼1.2 T, respectively. Further, scanning transmission electron microscopy (STEM) was performed at SmFe 9.5 N to correlate the microstructure with their extrinsic magnetic properties. Overall, this study demonstrates the impact of composition variation on the phase and extrinsic magnetic properties of TbCu 7 -type SmFe-based compounds, which can be utilized to tailor magnetic properties for targeted advanced magnet applications. [Display omitted] • Synthesized composition spread thin film using combinatorial sputtering technique. • Performed high-throughput composition, phase, and magnetic characterization methods. • Generated 18 data points for composition, phase, and extrinsic magnetic properties. • Achieved maximum Fe:Sm ratio with single TbCu 7 -type phase in Sm x Fe and SmFe x N. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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