Magnetic properties and static–dynamic magnetostrictive characteristics for SmFe2/Fe exchange-coupled multilayers

Zhou, Baiyang; Lei, De-hui; Chen, Si-he; Luo, Haimin

doi:10.1016/j.jmmm.2011.04.003

Cited by 2 publications

(1 citation statement)

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“…Compared to the SmFe 2 phase, both the SmFe 3 and Sm 2 Fe 17 phases demonstrate higher saturation magnetization and coercivity (SmFe 3 : Ms = 80 emu/g, Hc = 3100 Oe; Sm 2 Fe 17 : Ms = 100 emu/g, Hc = 680 Oe) [21][22][23][24]. In contrast, the reported saturation magnetization and coercivity of the SmFe 2 phase are 59.8 emu/g and 300 Oe, respectively [25,26]. Notably, among these phases, SmFe 2 demonstrates exceptional magnetostrictive properties.…”

Section: Introductionmentioning

confidence: 95%

The Success of Fabrication of Pure SmFe2 Phase Film with Outstanding Perpendicular Magnetic Anisotropy

Liao,

Wang,

Shen

et al. 2024

Materials

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This study used DC magnetron sputtering technology to fabricate Sm-Fe films and systematically investigated the phase transition behavior of Sm-Fe films with different Fe ratios. It was found that at higher Fe content, the films consisted of Sm2Fe17 or SmFe7 phases; as Fe content decreased, the films were mainly composed of SmFe3 or SmFe2 phases; at higher Sm content, the films primarily consisted of Sm phase. Sm is prone to volatilization at high temperatures, so Ta was used as a capping layer to effectively suppress Sm volatilization, successfully synthesizing pure SmFe2 phase films at a nearly 1:2 ratio. The magnetic properties and magnetostrictive behavior of the SmFe2 films were investigated, revealing that pure-phase SmFe2 films exhibit good perpendicular magnetic anisotropy and magnetostriction properties. The larger stress along the perpendicular-to-film direction, resulting from the absence of substrate-induced constraints, contributes to the excellent perpendicular magnetic anisotropy of the films. This study successfully synthesized pure-phase SmFe2 films and discovered a new method for fabricating perpendicularly anisotropic films. The research findings are of great significance for the efficient synthesis of desired films with high phase formation temperatures containing volatile elements.

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