NDLI: Effect of Al doping on Structural and Magnetic Properties of Iron Oxide Thin Films Prepared by Sol-Gel Method *

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Effect of Al doping on Structural and Magnetic Properties of Iron Oxide Thin Films Prepared by Sol-Gel Method *

Content Provider	Semantic Scholar
Author	Akbar, Aseya Riaz, Saira Naseem, Shahzad
Copyright Year	2014
Abstract	Iron oxides are material of interest because of their use in spintronic devices including Magnetic Tunnel Junctions (MTJ) and Random Access Memories (RAM). Among the various phases of iron oxide, Fe2O3 is the most stable form which shows antiferromagnetic or weak ferromagnetic behavior at room temperature. In order to enhance magnetic properties of Fe2O3, we here report the structural and magnetic properties of aluminum (Al) doped Fe2O3 thin films prepared using sol-gel method. Effect of aluminum doping on Fe2O3 thin films have been given very little consideration in the past particularly the reports on magnetic properties are limited. The presence of (012), (110), (006), (202), (024), (214) and (217) planes indicate the formation of pure hematite phase. No peaks corresponding to aluminum or aluminum oxide are observed. The undoped hematite thin films show ferromagnetic behavior as opposed to antiferromagnetic nature of bulk hematite. In case of hematite, spins in the adjacent planes are ferromagnetically coupled whereas, antiferromagnetic coupling arises with the spins of the adjacent planes. Spin orbit coupling between the two adjacent planes give rise to uncompensated spins of Fe cations. Remarkable increase in magnetic moment is observed with the increase in dopant concentration.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://www.i-asem.org/publication_conf/acem14/7.SMM/W4C.5.MS524_1002F.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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