Magnetostrictive properties and microstructure of thermally annealed Sm–Fe thin films

Hwang, Suk Won; Kim, Jeon; Lim, Su-Ho; Kim, C.K.; Yoon, Chong Seung

doi:10.1016/j.msea.2006.02.373

Cited by 5 publications

(2 citation statements)

References 12 publications

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“…Wang et al discovered that thermal sputtering and heat treatment processes can lead to the formation of SmFe 2 phase, but they also observed the presence of α-Fe, Sm, oxides, and other impurity phases [27]. Yoon et al found that Sm-Fe films can be transformed into SmFe 2 through high-temperature annealing, but Fe precipitation occurs as well [28]. However, current research on Sm-Fe films mostly focuses on the synthesis of simple amorphous films.…”

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%

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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“…With the advantages of large force, high resolution and quick response [1] [2], etc, GMM has a wide and bright application prospect in the fields of ultra precision machining, microelectronics technology, biological engineering, optical fiber connection, and the manipulation and assembly of micro parts [3], etc. Currently, Giant Magnetostrictive Actuator (GMA) based on Joule effect of GMM, becomes research focus in the field of precision actuation [4] [5].…”

Section: Introductionmentioning

confidence: 99%

Magnet circuit optimization design of giant magnetostrictive actuator

Liu

yuyun

2008

2008 9th International Conference on Computer-Aided Industrial Design and Conceptual Design

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To optimize the electromagnetic performance of giant magnetostrictive actuator(GMA), equivalent magnet circuit equation was proposed, and effects of magnetic circuit components gap's magnetic permeability and the evenness of driving magnetic field on the magnetic field characteristics were analyzed based on the equation. the driving coil's structure was designed, and its shape was optimized based on G-factor; with the electromagnetic field analysis function available in ANSYS program, several different magnetic circuits and their field distribution are analyzed. As a result, a kind of magnetic circuit structure with more even magnetic field is found out. The actuator prototype was made and tested, and result shows the optimal method proposed in the paper can greatly improve performance of GMA.

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