Publication Date:
2014-07-29
Description:
Pt/Fe and Pt/Ag/Fe layered films were deposited by DC magnetron sputtering on MgO(001), SrTiO 3 (001), and Al 2 O 3 (0001) single crystalline substrates at room temperature. The films were post-annealed between 623 K and 1173 K for 30 s in flowing N 2 atmosphere. The onset of the L 1 0 -FePt phase formation in films deposited on MgO(001) and SrTiO 3 (001) substrates was observed after annealing between 773 and 873 K, while chemical L 1 0 ordering sets in for Pt/Fe bilayers on Al 2 O 3 (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.
Print ISSN:
0021-8979
Electronic ISSN:
1089-7550
Topics:
Physics
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