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Coatings
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Surface and Thin Film Magnetism
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Surface and Thin Film Magnetism

A special issue of Coatings (ISSN 2079-6412). This special issue belongs to the section "Thin Films".

Deadline for manuscript submissions: closed (20 January 2022) | Viewed by 4926

Special Issue Editor

Prof. Dr. Jai-Lin Tsai

E-Mail Website
Guest Editor
Department of Materials Science and Engineering, National Chung Hsing University, Taichung 40227, Taiwan
Interests: magnetic materials and physics; thin film deposition; etc.

Special Issue Information

Dear Colleagues,

Magnetic materials and their applications can be simply broken down into hard, soft and recording materials based on markets. There are full of thin film magnetism for magnetic recording field. The current perpendicular-, and future heat-assisted- magnetic recording media, the monopole writer consisting of soft magnetic film and underlayer, and the read sensor and memory based on tunneling magnetoresistance are all thin film devices. Thin film growth with structural texture and perpendicular magnetic anisotropy have been quite important for recent magnetic media and memory. The most common preparation method for magnetic thin film devices is magnetron sputtering based on physical vapor deposition. Furthermore, thin film deposition also provides an effective way to develop new hard- and soft-magnetic materials fundamentally. With the development of magnetic thin film science and engineering, we would like to invite you to contribute and submit your work to Special Issue on “Surface and Thin Film Magnetism”. The aim of this Special Issue is to present the latest experimental and theoretical results in this field through a combination of original research papers and review articles from the leading groups in the world.

Prof. Dr. Jai-Lin Tsai
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Coatings is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Published Papers (2 papers)

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Research

10 pages, 2472 KiB  
Article
Static and Dynamic Magnetic Properties of FeGa/FeNi (FeNi/FeGa) Bilayer Structures
by Zhen Wang, Fenglong Wang, Zhaoyang Hou, Chunlong Xu and Derang Cao
Coatings 2020, 10(4), 383; https://doi.org/10.3390/coatings10040383 - 14 Apr 2020
Cited by 4 | Viewed by 2735
Abstract
FeGa/FeNi bilayer structures with different deposition order were fabricated by the electrodeposition method on indium tin oxide (ITO) substrates. The structure, morphology, static and dynamic magnetic properties of FeGa/FeNi (FeNi/FeGa) films were investigated. The bilayer structures exhibit extremely various magnetic properties with different [...] Read more.
FeGa/FeNi bilayer structures with different deposition order were fabricated by the electrodeposition method on indium tin oxide (ITO) substrates. The structure, morphology, static and dynamic magnetic properties of FeGa/FeNi (FeNi/FeGa) films were investigated. The bilayer structures exhibit extremely various magnetic properties with different deposition order which could be attributed to the different coupling interaction in the interface. When FeGa is on top, the bilayer structures show lower coercivity than when FeNi is on top. Meanwhile, increase of the proportion of FeNi in the bilayer structure could affect the Hc and Mr/Ms. The ferromagnetic resonance peak of FeGa on top moves to a high field compared with FeNi on top. Moreover, FeGa on top shows improved complex permeability and a clear resonant phenomenon of the magnetization. These properties make FeGa/FeNi bilayer structure a potential candidate for high-frequency application. Full article
(This article belongs to the Special Issue Surface and Thin Film Magnetism)
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11 pages, 8890 KiB  
Article
Influence of an MgTiTaON Inserted Layer on Magnetic Properties and Microstructure of FePtAgC Films
by Jai-Lin Tsai, Cheng Dai, Jyun-you Chen, Ting-Wei Hsu, Shi-Min Weng and Lin-Chen Huang
Coatings 2019, 9(4), 238; https://doi.org/10.3390/coatings9040238 - 8 Apr 2019
Cited by 3 | Viewed by 2491
Abstract
The FePt film above 10 nm critical lattice relaxation thickness was prepared and the ultrathin MgTiTaON layer was interleaved in between FePt film and the multilayer stack is FePt(6 nm)/[MgTiTaON(1 nm)/FePt(4 nm)]2. Next, the FePt films were co-sputtered with (Ag, C) [...] Read more.
The FePt film above 10 nm critical lattice relaxation thickness was prepared and the ultrathin MgTiTaON layer was interleaved in between FePt film and the multilayer stack is FePt(6 nm)/[MgTiTaON(1 nm)/FePt(4 nm)]2. Next, the FePt films were co-sputtered with (Ag, C) segregants during deposition and the layer stacks is FePt(6 nm)(Ag, C)(x vol %)/[MgTiTaON (1 nm)/FePt(4 nm)(Ag, C) (x vol %)]2 (x = 0, 10, 20, 30, 40). After high temperature deposition at 470 °C, the granular FePt(Ag, C, MgTiTaON) film illustrated perpendicular magnetization and the out-of-plane coercivity (Hc) was increased with (Ag, C) segregants and the highest Hc is 18.3 kOe when x = 40. From cross-section images, the FePt layer are more continuous with 0 and 10 vol % (Ag, C) segregants and changed to an island structure when the (Ag, C) segregants increase to 20–40 vol %. The FePt grains were grown in separated islands in 20, 30 vol % (Ag, C) and changed to dense columnar-like morphology in 40 vol %. The second nucleated grains which contribute the in-plane magnetization are found in FePt (Ag, C) (40 vol %) film. The FePt islands are reached by inserting the ultrathin MgTiTaON layer and the island heights of FePt(Ag, C) (30, 40 vol %) are around 31–38 nm and the aspect ratios are 0.6–0.8. Full article
(This article belongs to the Special Issue Surface and Thin Film Magnetism)
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