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Microstructural Evolution during Post Deposition Annealing of Pulsed Laser Deposited Fe(100-x) Pdx Thin Films

Published online by Cambridge University Press:  26 February 2011

Andreas Kulovits ,
John Leonard  and
Jorg Wiezorek
Andreas Kulovits
Affiliation:
akk8@[itt.eduUniversity of PittsburghMech. Eng. & Mat. Sci.848 Benedum HallPittsburgh PA 15261United States
John Leonard
Affiliation:
jleonard@pitt.edu, University of Pittsburgh, Mech. Eng. & Mat. Sci., 848 Benedum Hall, Pittsburgh, PA, 15261, United States
Jorg Wiezorek
Affiliation:
wiezorek@pitt.edu, University of Pittsburgh, Mech. Eng. & Mat. Sci., 848 Benedum Hall, Pittsburgh, PA, 15261, United States
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Abstract

FePd belongs to a group of L10 - intermetallics with attractive uniaxial hard-ferromagnetic properties. In this study thin films of different composition FeXPd1-X, X= 50, 60, were deposited by pulsed laser deposition (PLD) on amorphous SiO2 and Si3N4. We characterized the microstructural evolution during the different order/disorder phase-transformations during post-deposition annealing relative to the as-deposited state in terms of morphology, grain size, texture and presence of short-range order using SEM, XRD and TEM. VSM measurements were used to monitor magnetic properties. Differences in these microstructural parameters are due to different ordering reactions FCC to L10 ordering and concomitant phase separation of ?-Fe vs. FCC to L10 ordering upon heat treatment. The relationships of the different phase transformation products to properties are discussed. Support from NSF-DMR-Metals is gratefully acknowledged.

Keywords

transmission electron microscopy (TEM)laser ablationphase transformation
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 980: Symposium II – Advanced Intermetallic-Based Alloys , 2006 , 0980-II03-08
Copyright
Copyright © Materials Research Society 2007

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References

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