Abstract
A comparative study on the microstructure and magnetic properties of FePt-MgO and FePt-Ag thin film sputtered onto glass substrate has been carried out systematically in this paper. FePt-MgO thin film shows better (001) orientation of L10-ordered FePt phase, narrower c-axis orientation distribution, higher out-of-plane coercivity, higher remanence ratio and larger hysteresis slope α than the FePt-Ag thin film. The results of angular variation of coercivity indicate that the magnetization reversal behavior of FePt-MgO thin film is closer to the Stoner–Wohlfarth rotation model than that of FePt-Ag thin film. The magnetic domain size in FePt-MgO thin film (~80nm) is smaller than that in FePt-Ag thin film (~160nm) due to the isolated grain structure. From this point of view, the FePt-MgO thin film is more suitable than the FePt-Ag thin film for the application of high density recording media.
Keywords: FePt thin film, magnetic recording media, magnetic properties, magnetization reversal, magnetic coupling, Stoner–Wohlfarth rotation, Glass Substrate
Current Nanoscience
Title:Comparative Studies on the Microstructure and Magnetic Properties of FePt/ (Ag, MgO) Nanocomposite thin Films on Glass Substrate
Volume: 8 Issue: 3
Author(s): Wei Lu, Chenchong He, Zhe Chen, Junwei Fan, Yuxin Wang and Biao Yan
Affiliation:
Keywords: FePt thin film, magnetic recording media, magnetic properties, magnetization reversal, magnetic coupling, Stoner–Wohlfarth rotation, Glass Substrate
Abstract: A comparative study on the microstructure and magnetic properties of FePt-MgO and FePt-Ag thin film sputtered onto glass substrate has been carried out systematically in this paper. FePt-MgO thin film shows better (001) orientation of L10-ordered FePt phase, narrower c-axis orientation distribution, higher out-of-plane coercivity, higher remanence ratio and larger hysteresis slope α than the FePt-Ag thin film. The results of angular variation of coercivity indicate that the magnetization reversal behavior of FePt-MgO thin film is closer to the Stoner–Wohlfarth rotation model than that of FePt-Ag thin film. The magnetic domain size in FePt-MgO thin film (~80nm) is smaller than that in FePt-Ag thin film (~160nm) due to the isolated grain structure. From this point of view, the FePt-MgO thin film is more suitable than the FePt-Ag thin film for the application of high density recording media.
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Cite this article as:
Lu Wei, He Chenchong, Chen Zhe, Fan Junwei, Wang Yuxin and Yan Biao, Comparative Studies on the Microstructure and Magnetic Properties of FePt/ (Ag, MgO) Nanocomposite thin Films on Glass Substrate, Current Nanoscience 2012; 8 (3) . https://dx.doi.org/10.2174/157341312800620232
DOI https://dx.doi.org/10.2174/157341312800620232 |
Print ISSN 1573-4137 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-6786 |
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