Microstructural studies of L10-FePt thin films with high coercivity fabricated at low deposition temperatures

Z. L. Zhao, J. Ding, Y. Li, G. M. Chow, J. S. Chen, J. P. Wang

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

The infuence of ultrathin nonmagnetic Ag layers on the formation of the ordered fct-L10 PtFe phase and their magnetic properties have been studied, when the thin FePt films were deposited on MgO (100) single-crystal substrates. Epitaxial growth of the FePt (001) films was observed at the deposition temperature of 400 °C. With ultrathin Ag intermediate layers deposited between FePt layers, the surface morphology changed from the interconnection network to isolated-island character. The perpendicular coercivity of the FePt film dramatically increased from 6.5 to 32.5 kOe. The formation mechanism of the isolated island morphology of FePt thin films is discussed.

Original languageEnglish (US)
Pages (from-to)811-814
Number of pages4
JournalMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume38
Issue number4
DOIs
StatePublished - Apr 1 2007

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