Effects of total thickness on (001) texture, surface morphology, and magnetic properties of [Fe/Pt]n multilayer films by monatomic layer deposition

Y. S. Yu, T. A. George, W. L. Li, L. P. Yue, W. D. Fei, Haibo Li, Mei Liu, D. J. Sellmyer

Research output: Contribution to journalArticle

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Abstract

Atomic-scale [Fe/Pt]n multilayer films with different total thickness were prepared on thermally oxidized Si (100) substrates at room temperature by monatomic layer deposition using dc-magnetron and rf-magnetron sputtering. Effects of the total thickness on (001) texture, surface morphology, and magnetic properties of the postannealed films have been investigated. It is found that the particlelike structure films with perfect (001) texture and perpendicular magnetic anisotropy are obtained with a thickness of less than or equal to 6.5 nm. After 500 °C annealing, the films with thickness of 6.5 and 11.9 nm show very smooth surface. In addition, with increasing total thickness of the films, (001) texture and perpendicular magnetic anisotropy of the annealed films deteriorate, and the films become continuous in structure. The total thickness of the films also affects the exchange-coupling interaction among FePt magnetic grains and the magnetization reversal process.

Original languageEnglish (US)
Article number073906
JournalJournal of Applied Physics
Volume108
Issue number7
DOIs
StatePublished - Oct 1 2010

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textures
magnetic properties
anisotropy
magnetron sputtering
magnetization
annealing
room temperature
interactions

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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Effects of total thickness on (001) texture, surface morphology, and magnetic properties of [Fe/Pt]n multilayer films by monatomic layer deposition. / Yu, Y. S.; George, T. A.; Li, W. L.; Yue, L. P.; Fei, W. D.; Li, Haibo; Liu, Mei; Sellmyer, D. J.

In: Journal of Applied Physics, Vol. 108, No. 7, 073906, 01.10.2010.

Research output: Contribution to journalArticle

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abstract = "Atomic-scale [Fe/Pt]n multilayer films with different total thickness were prepared on thermally oxidized Si (100) substrates at room temperature by monatomic layer deposition using dc-magnetron and rf-magnetron sputtering. Effects of the total thickness on (001) texture, surface morphology, and magnetic properties of the postannealed films have been investigated. It is found that the particlelike structure films with perfect (001) texture and perpendicular magnetic anisotropy are obtained with a thickness of less than or equal to 6.5 nm. After 500 °C annealing, the films with thickness of 6.5 and 11.9 nm show very smooth surface. In addition, with increasing total thickness of the films, (001) texture and perpendicular magnetic anisotropy of the annealed films deteriorate, and the films become continuous in structure. The total thickness of the films also affects the exchange-coupling interaction among FePt magnetic grains and the magnetization reversal process.",
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AU - Liu, Mei

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