Combinatorial study of Fe-Co-V hard magnetic thin films

Thin film libraries of Fe-Co-V were fabricated by combinatorial sputtering to study magnetic and structural properties over wide ranges of composition and thickness by high-throughput methods: synchrotron X-ray diffraction, magnetometry, composition, and thickness were measured across the Fe-Co-V li...

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Bibliographic Details
Published in:Science and technology of advanced materials Vol. 18; no. 1; pp. 231 - 238
Main Authors: Fackler, Sean W., Alexandrakis, Vasileios, König, Dennis, Kusne, A. Gilad, Gao, Tieren, Kramer, Matthew J., Stasak, Drew, Lopez, Kenny, Zayac, Brad, Mehta, Apurva, Ludwig, Alfred, Takeuchi, Ichiro
Format: Journal Article
Language:English
Published: United States Taylor & Francis 01.01.2017
Taylor & Francis Ltd
IOP Publishing
Taylor & Francis Group
Subjects:
203 Magnetics / Spintronics / Superconductors
306 Thin film / Coatings
50 Energy Materials
Anisotropy
Cobalt
Coercivity
Combinatorial analysis
combinatorial thin film
Composition
Domain walls
Focus on Materials Genome and Informatics
high-throughput
Hysteresis loops
Iron
Kerr magnetooptical effect
Libraries
Magnetic measurement
Magnetic properties
Magnetic thin films
Magnetization reversal
Magnetometers
MATERIALS SCIENCE
permanent magnet
Synchrotron radiation
Thickness measurement
Thin films
Vicalloy
50 Energy Materials
permanent magnet
203 Magnetics / Spintronics / Superconductors
combinatorial thin film
306 Thin film / Coatings
Vicalloy
high-throughput
ISSN:1468-6996, 1878-5514
Online Access:Get full text
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Description
Summary:Thin film libraries of Fe-Co-V were fabricated by combinatorial sputtering to study magnetic and structural properties over wide ranges of composition and thickness by high-throughput methods: synchrotron X-ray diffraction, magnetometry, composition, and thickness were measured across the Fe-Co-V libraries. In-plane magnetic hysteresis loops were shown to have a coercive field of 23.9 kA m -1 (300 G) and magnetization of 1000 kA m -1 . The out-of-plane direction revealed enhanced coercive fields of 207 kA m -1 (2.6 kG) which was attributed to the shape anisotropy of column grains observed with electron microscopy. Angular dependence of the switching field showed that the magnetization reversal mechanism is governed by 180° domain wall pinning. In the thickness-dependent combinatorial study, co-sputtered composition spreads had a thickness ranging from 50 to 500 nm and (Fe 70 Co 30 ) 100-x V x compositions of x = 2-80. Comparison of high-throughput magneto-optical Kerr effect and traditional vibrating sample magnetometer measurements show agreement of trends in coercive fields across large composition and thickness regions.
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USDOE
IS-J-9322
NMP3-SL-2012-280670; AC02-07CH11358; AC02-76SF00515
ISSN:1468-6996
1878-5514
DOI:10.1080/14686996.2017.1287520