Stepwise electrodeposition of L1₀-FePt thick films optimized by appropriate deposition voltage and annealing temperature

IF 2.8 3区化学 Q3 CHEMISTRY, PHYSICAL

Chemical Physics Letters Pub Date : 2025-03-05 DOI:10.1016/j.cplett.2025.142029

Qunxi Wang , Yanhui Wu , Hui Zheng

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Abstract

This study explores a novel approach to fabricating FePt thick films through stepwise electrodeposition, optimized by appropriate deposition voltage and annealing temperature. By carefully controlling these parameters, the FePt films achieved a near-equiatomic composition. The coercivity (Hc) of the films exhibits a positive correlation with annealing temperature, reaching a peak value of 11,600 Oe at 900 °C, which is primarily attributed to the enhanced development of the L1₀-ordered FePt phase. Furthermore, the growth and recrystallization behavior of FePt thick films were studied using an innovative stepwise electrodeposition process combined with microwave pretreatment, which significantly improved the structural uniformity and magnetic properties of the films. After 11 h of stepwise electrodeposition, L1₀-FePt thick films with a thicknesses of 5.8 μm and an Hc of 9100 Oe were obtained. This work demonstrates that optimizing the deposition and annealing processes is an effective strategy for fabricating high-performance L1₀-FePt thick films via electrodeposition, broadening their potential applications in high-density magnetic storage, spintronic devices, and other advanced technologies.

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来源期刊

Chemical Physics Letters 化学-物理：原子、分子和化学物理

CiteScore

5.70

自引率

3.60%

发文量

798

审稿时长

33 days

期刊介绍： Chemical Physics Letters has an open access mirror journal, Chemical Physics Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Chemical Physics Letters publishes brief reports on molecules, interfaces, condensed phases, nanomaterials and nanostructures, polymers, biomolecular systems, and energy conversion and storage. Criteria for publication are quality, urgency and impact. Further, experimental results reported in the journal have direct relevance for theory, and theoretical developments or non-routine computations relate directly to experiment. Manuscripts must satisfy these criteria and should not be minor extensions of previous work.