Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/43404
Title: MICROSTRUCTURAL CONTROL AND MAGNETIC PROPERTIES OF FEPT THIN FILMS FOR HEAT ASSISTED MAGNETIC RECORDING
Authors: LI HUIHUI
Keywords: magnetic recording media, thin film, FePt, TiN, interlayer, grain size
Issue Date: 9-Jan-2013
Source: LI HUIHUI (2013-01-09). MICROSTRUCTURAL CONTROL AND MAGNETIC PROPERTIES OF FEPT THIN FILMS FOR HEAT ASSISTED MAGNETIC RECORDING. ScholarBank@NUS Repository.
Abstract: L10 FePt alloy is a promising candidate for next generation magnetic recording media. The aim of this study was to optimize the microstructure and magnetic properties of FePt thin film simultaneously by introducing some new materials and novel layer structures. We firstly proposed TiN intermediate layer. The TiN intermediate layer and the further improved TiON/TiN-ZrOx intermediate layers exhibited great advantages over the conventional MgO intermediate layer in reducing in-plane hysteresis, improving epitaxial growth and optimizing the grain shape. Thereafter, based on these intermediate layers, granular FePt thin films with small grain sizes around 6 nm and good perpendicular magnetic anisotropy were obtained by various methods such as SiNx-C doping, MgO nucleation layer and SiOx-C doping. We also conducted some fundamental studies on FePt lattice relaxation and grain size limitation: a model suggested that the achievable minimum stable grain size for FePt on TiN/MgO was 3.3 nm.
URI: http://scholarbank.nus.edu.sg/handle/10635/43404
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