Next Article in Journal
Effect of Urea-Formaldehyde-Coated Epoxy Microcapsule Modification on Gloss, Toughness and Chromatic Distortion of Acrylic Copolymers Waterborne Coating
Previous Article in Journal
Broadband High-Reflection Dielectric PVD Coating with Low Stress and High Adhesion on PMMA
Article Menu
Issue 4 (April) cover image

Export Article

Open AccessFeature PaperArticle

Influence of an MgTiTaON Inserted Layer on Magnetic Properties and Microstructure of FePtAgC Films

Department of Materials Science and Engineering, National Chung Hsing University, Taichung 40227, Taiwan
*
Author to whom correspondence should be addressed.
Coatings 2019, 9(4), 238; https://doi.org/10.3390/coatings9040238
Received: 15 March 2019 / Revised: 2 April 2019 / Accepted: 5 April 2019 / Published: 8 April 2019
(This article belongs to the Special Issue Surface and Thin Film Magnetism)
  |  
PDF [8890 KB, uploaded 23 April 2019]
  |     |  

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) 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. View Full-Text
Keywords: perpendicular magnetic anisotropy; coercivity; microstructure perpendicular magnetic anisotropy; coercivity; microstructure
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Tsai, J.-L.; Dai, C.; Chen, J.-Y.; Hsu, T.-W.; Weng, S.-M.; Huang, L.-C. Influence of an MgTiTaON Inserted Layer on Magnetic Properties and Microstructure of FePtAgC Films. Coatings 2019, 9, 238.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Coatings EISSN 2079-6412 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top