A Study of Fabrication Process for L10 FePt-Based HAMR Media

Autor:	J.Z. Shi, Kelvin Cher, Jiang Feng Hu, Yi Yang, Hnin Yu Yu Ko, Lay Geok Ng, Tiejun Zhou
Rok vydání:	2014
Předmět:	Fabrication Materials science Chemical engineering Diffusion Scientific method Recording media Electrical and Electronic Engineering Microstructure Electronic Optical and Magnetic Materials Deposition temperature
Zdroj:	IEEE Transactions on Magnetics. 50:1-4
ISSN:	1941-0069 0018-9464
Popis:	The effect of the fabrication process on magnetic, textural, and microstructural properties of the L 10 ordered FePt heat-assisted magnetic recording media with basic structure of NiTa/MgO/X/FePt-C/FePt-SiO 2 was investigated. Compared with the one-step heating process, both postannealing and two-step heating processes enhanced the chemical ordering of FePt. The two-step heating sample demonstrated improved lateral grain isolation and smaller grain sizes. Results suggested that the higher deposition temperature could improve the phase separation of FePt and SiO 2 , thus improving the microstructure of FePt-based granular films. Diffusion of Ta from NiTa seedlayer into MgO underlayer was also observed causing the amorphization of the MgO near the NiTa/MgO interface.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6b6feb5aacf1051511468822efcfaf15 https://doi.org/10.1109/tmag.2014.2321424 Zobrazit plný text záznamu