Superparamagnetic behavior of ultrathin Fe films grown on Al 2O 3(0001) substrates

Yu Shiratsuchi; Masahiko Yamamoto; Yasushi Endo; Dongqi Li; S. D. Bader

doi:10.1063/1.1628408

Superparamagnetic behavior of ultrathin Fe films grown on Al ₂O ₃(0001) substrates

Yu Shiratsuchi, Masahiko Yamamoto, Yasushi Endo, Dongqi Li, S. D. Bader

ENG - Electrical Engineering

Research output: Contribution to journal › Article › peer-review

20 Citations (Scopus)

Abstract

The superparamagnetic behavior of ultrathin Fe films at various growth temperatures was studied. The films were grown on an Al ₂O ₃(0001) substrate by molecular beam epitaxy (MBE). The blocking temperature was strongly dependent on the growth temperature and the 1-nm-thick Fe films were in the superparamagnetic state. The results show that for growth at 673 and 773 K, Fe forms large particles and the magnetic properties are dominated by the individual particles.

Original language	English
Pages (from-to)	7675-7679
Number of pages	5
Journal	Journal of Applied Physics
Volume	94
Issue number	12
DOIs	https://doi.org/10.1063/1.1628408
Publication status	Published - 2003 Dec 15

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abstract = "The superparamagnetic behavior of ultrathin Fe films at various growth temperatures was studied. The films were grown on an Al 2O 3(0001) substrate by molecular beam epitaxy (MBE). The blocking temperature was strongly dependent on the growth temperature and the 1-nm-thick Fe films were in the superparamagnetic state. The results show that for growth at 673 and 773 K, Fe forms large particles and the magnetic properties are dominated by the individual particles.",

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AU - Shiratsuchi, Yu

AU - Yamamoto, Masahiko

AU - Endo, Yasushi

AU - Li, Dongqi

AU - Bader, S. D.

PY - 2003/12/15

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N2 - The superparamagnetic behavior of ultrathin Fe films at various growth temperatures was studied. The films were grown on an Al 2O 3(0001) substrate by molecular beam epitaxy (MBE). The blocking temperature was strongly dependent on the growth temperature and the 1-nm-thick Fe films were in the superparamagnetic state. The results show that for growth at 673 and 773 K, Fe forms large particles and the magnetic properties are dominated by the individual particles.

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Superparamagnetic behavior of ultrathin Fe films grown on Al ₂O ₃(0001) substrates

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