Structure and magnetic properties of sputtered thin films of Fe0.79Ge0.21

dc.contributor.author	Hamdeh, Hussein H.	en_US
dc.contributor.author	Oliver, S. A.	en_US
dc.contributor.author	Fultz, B.	en_US
dc.contributor.author	Gao, Z. Q.	en_US
dc.date.accessioned	2011-12-20T23:52:19Z
dc.date.available	2011-12-20T23:52:19Z
dc.date.issued	1993-10-01	en_US
dc.identifier.citation	Hamdeh, H. H.; Oliver, S. A.; Fultz, B.; Gao, Z. Q.; , "Structure and magnetic properties of sputtered thin films of Fe0.79Ge0.21," Journal of Applied Physics , vol.74, no.8, pp.5117-5123, Oct 1993 doi: 10.1063/1.354298	en_US
dc.identifier.issn	0021-8979	en_US
dc.identifier.uri	http://dx.doi.org/10.1063/1.354298	en_US
dc.identifier.uri	http://hdl.handle.net/10057/4078
dc.description	The full text of this article is not available on SOAR. WSU users can access the article via IEEE Xplore database licensed by University Libraries: http://libcat.wichita.edu/vwebv/holdingsInfo?bibId=1045954	en_US
dc.description.abstract	Films of Fe0.79Ge0.21 with thicknesses of 300 nm were synthesized by ion beam sputtering, and were annealed at temperatures from 200 to 550°C. The materials were characterized by x-ray diffractometry, Mössbauer spectrometry, vibrating sample magnetometry, ferromagnetic resonance spectrometry, and electrical resistivity measurements. The as-prepared materials comprised chemically disordered bcc crystallites of sizes less than 20 nm, and were found to have a distribution of internal strains. Upon annealing at temperatures of 250°C and below, there occurred strain relaxation, some evolution of short range chemical order, and an improvement in soft magnetic properties. The coercive field was a minimum for the sample annealed at 250°C. Crystallite growth occurred at higher annealing temperatures, accompanied by a transition in several measured parameters from those of ultrafine grained materials to those typical of polycrystalline materials. This trend can be explained with the random anisotropy model. Mössbauer and magnetization measurements indicated that the Ge atoms behave as magnetic holes. The 57Fe hyperfine magnetic field distribution, and its change during chemical ordering, can be calculated approximately with a model of magnetic response. The large local isomer shifts at 57Fe atoms near Ge atoms suggest that a local depletion of 4s conduction electron density should be incorporated into the model.	en_US
dc.language.iso	en_US	en_US
dc.publisher	IEEE	en_US
dc.relation.ispartofseries	Journal of Applied Physics , vol.74, no.8, pp.5117-5123	en_US
dc.title	Structure and magnetic properties of sputtered thin films of Fe0.79Ge0.21	en_US
dc.type	Article	en_US
dc.description.version	Peer reviewed article	en_US
dc.rights.holder	© IEEE, 1993	en_US