Exchange coupling in metallic multilayers with a top FeRh layer

Journal Article · Sun May 15 04:00:00 EDT 2016 · AIP Advances

DOI:https://doi.org/10.1063/1.4943606· OSTI ID:22611758

Kanashima, T.; Tanikawa, K. ^[1]; Hirayama, J. ^[2]; Taniyama, T. ^[3]

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1. Department of Electronics, Kyushu University, 744 Motooka, Fukuoka 819-0395 (Japan)
2. Graduate School of Engineering Science, Osaka University, Toyonaka 560-8531 (Japan)
3. Materials and Structures Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503 (Japan)

We study magnetic properties of metallic multilayers with FeRh/ferromagnet interfaces grown by low-temperature molecular beam epitaxy. Room-temperature coercivity of the ferromagnetic layers is significantly enhanced after the growth of FeRh, proving the existence of the exchange coupling between the antiferromagnetic FeRh layer and the ferromagnetic layer. However, exchange bias is not clearly observed probably due to the presence of disordered structures, which result from the lattice strain at the FeRh/ferromagnet interfaces due to the lattice mismatch. We infer that the lattice matched interface between FeRh and ferromagnetic layers is a key parameter for controlling magnetic switching fields in such multilayer systems.

• OSTI ID: 22611758
• Journal Information: AIP Advances, Journal Name: AIP Advances Journal Issue: 5 Vol. 6; ISSN AAIDBI; ISSN 2158-3226
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANTIFERROMAGNETISM
COERCIVE FORCE
COUPLING
CRYSTAL DEFECTS
INTERFACES
IRON COMPOUNDS
LAYERS
MAGNETIC PROPERTIES
MOLECULAR BEAM EPITAXY
MOLECULAR BEAMS
RHODIUM COMPOUNDS
STRAINS
TEMPERATURE RANGE 0273-0400 K