Magnetic and structural properties of Sm{sub 2}Fe{sub 10}Co{sub 7}M{sub x}C{sub y} thin films

Journal Article · Mon Sep 01 04:00:00 EDT 1997 · IEEE Transactions on Magnetics

DOI:https://doi.org/10.1109/20.619544· OSTI ID:566384

Al-Omari, I A ^[1]; Cunningham, N J; Sellmyer, D J ^[2]

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1. Jordan Univ. of Science and Technology, Irbid (Jordan). Dept. of Applied Physical Sciences
2. Univ. of Nebraska, Lincoln, NE (United States)

The structural and magnetic properties of Sm{sub 21}Fe{sub 10}Co{sub 7}/M{sub x}C{sub y} (M = Al and Si; x {ge} 0 and y {le} 0) multilayer films with Ta underlayers and overlayers before and after annealing at 700 C for 5--12 min have been fabricated and studied. Structural studies show evidence of layer diffusion upon annealing, X-ray diffraction shows that the samples after annealing consist of a soft phase, {alpha}-Fe, and a hard phase with the 2--17-type structure. The samples studied have in-plane anisotropy with single hysteresis loops indicating that the two phases are strongly exchange coupled. After annealing, the coercivity of samples with Al{sub x}C{sub y} is found to increase with increasing Al{sub x}C{sub y} composition to a maximum of 3.3 kOe. The energy products for these samples are found to increase from 1.4 MGOe for SmFeCo to 8 MGOe for SmFeCo with Al{sub x}C{sub y}.

• DOE Contract Number: FG02-86ER45262
• OSTI ID: 566384
• Report Number(s): CONF-970468--
• Journal Information: IEEE Transactions on Magnetics, Journal Name: IEEE Transactions on Magnetics Journal Issue: 5Pt2 Vol. 33; ISSN IEMGAQ; ISSN 0018-9464
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM CARBIDES
COBALT ALLOYS
COMPOSITE MATERIALS
IRON BASE ALLOYS
LAYERS
MAGNETIC PROPERTIES
MICROSTRUCTURE
SAMARIUM ALLOYS
SILICON CARBIDES