Annealing effects on grain size, surface roughness, nanoindentation, and magnetic properties of Fe80Ce20 films deposited on PET and PMMA substrates

IF 3 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materialia Pub Date : 2024-12-04 DOI:10.1016/j.mtla.2024.102310

Yung-Huang Chang , Shih-Hung Lin , Hsiung-Liang Chen , Yuan-Tsung Chen , Xu-Chen Huang

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Abstract

Rare earths (RE) and transition metals (TM) are widely studied for enhancing soft magnetic characteristics in magnetic devices. This study explores Fe₈₀Ce₂₀ films deposited on polyethylene terephthalate (PET) and polymethyl methacrylate (PMMA) substrates using direct current (DC) magnetron sputtering, focusing on the impact of film thickness and annealing temperature on structural, surface, magnetic, and mechanical properties. X-ray diffraction (XRD) confirmed the crystalline microstructure of Fe₈₀Ce₂₀ films, with body-centered cubic (BCC) α-Fe(110) phases. Atomic force microscopy (AFM) showed increased surface roughness with annealed grain size growth. The films were hydrophilic, and annealing increased the contact angle due to rougher surfaces. Surface energy was unaffected by film thickness. Optical properties indicated that thickness affects transmittance, with rougher surfaces causing light scattering. The films were too thin for significant substrate effects, and annealing did not eliminate residual stress. Hysteresis loops revealed good soft magnetic properties with a coercivity (Hc) of about 37Oe and saturation magnetization (Ms) over 1500 emu/cm³. Magnetic domain images showed a striped pattern, with changes in domain size affecting saturation magnetization.

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来源期刊

Materialia MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

6.40

自引率

2.90%

发文量

345

审稿时长

36 days

期刊介绍： Materialia is a multidisciplinary journal of materials science and engineering that publishes original peer-reviewed research articles. Articles in Materialia advance the understanding of the relationship between processing, structure, property, and function of materials. Materialia publishes full-length research articles, review articles, and letters (short communications). In addition to receiving direct submissions, Materialia also accepts transfers from Acta Materialia, Inc. partner journals. Materialia offers authors the choice to publish on an open access model (with author fee), or on a subscription model (with no author fee).