Effect of hydrazine on structural, morphological and magnetic properties of SmCo-Co nanocomposites

Kumari, Kavita; Kumar, Akshay; Park, Su-Jeong; Sharma, Mohit K.; Yadav, Naveen; Kumar, Manish; Kumar, Shalendra; Huh, Seok-Hwan; Kim, Jong-Woo; Koo, Bon Heun

doi:10.1016/j.cap.2023.06.007

Cited by 2 publications

(1 citation statement)

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“…These nanochips exhibited a coercivity of 19.3 kOe and a maximum energy product of 14.4 MGOe [19]. Kumari et al achieved high magnetic anisotropy in composite materials by chemically synthesizing a combination of soft magnetic Co phase and hard magnetic Sm-Co phase [20]. Sm-Fe films exist in multiple phases, including the amorphous phase, SmFe 2 , SmFe 3 , and Sm 2 Fe 17 , etc.…”

Section: Introductionmentioning

confidence: 99%

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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Section: Introductionmentioning

confidence: 99%