Influence of the substrate choice on the L10 phase formation of post-annealed Pt/Fe and Pt/Ag/Fe thin films

I. A. Vladymyrskyi, M. V. Karpets, G. L. Katona, D. L. Beke, S. I. Sidorenko, T. Nagata, T. Nabatame, T. Chikyow, F. Ganss, G. Beddies, M. Albrecht, I. M. Makogon

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Abstract

Pt/Fe and Pt/Ag/Fe layered films were deposited by DC magnetron sputtering on MgO(001), SrTiO3(001), and Al2O3(0001) single crystalline substrates at room temperature. The films were post-annealed between 623 K and 1173 K for 30 s in flowing N2 atmosphere. The onset of the L10-FePt phase formation in films deposited on MgO(001) and SrTiO3(001) substrates was observed after annealing between 773 and 873 K, while chemical L10 ordering sets in for Pt/Fe bilayers on Al2O3(0001) at lower temperatures accompanied by strong (001)-texture. It is concluded that elastic stress, arising from the difference in thermal expansion coefficients between film and substrate, promotes ordering and texture formation.

Original languageEnglish
Article number044310
JournalJournal of Applied Physics
Volume116
Issue number4
DOIs
Publication statusPublished - Jul 28 2014

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Vladymyrskyi, I. A., Karpets, M. V., Katona, G. L., Beke, D. L., Sidorenko, S. I., Nagata, T., Nabatame, T., Chikyow, T., Ganss, F., Beddies, G., Albrecht, M., & Makogon, I. M. (2014). Influence of the substrate choice on the L10 phase formation of post-annealed Pt/Fe and Pt/Ag/Fe thin films. Journal of Applied Physics, 116(4), [044310]. https://doi.org/10.1063/1.4891477