Analysis of the weak coupling of the IrMn/Co/Ru/NiFe structures by ferromagnetic resonance

Journal Article · Fri Apr 15 04:00:00 EDT 2011 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3569690· OSTI ID:21560176

Alayo, W; Baggio-Saitovitch, E ^[1]; Sousa, M A; Pelegrini, F ^[2]

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1. Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro 22290-180 (Brazil)
2. Instituto de Fisica, Universidade Federal de Goias, Goiania 74001-970 (Brazil)

The Ir{sub 20}Mn{sub 80}/Co/Ru/Ni{sub 81}Fe{sub 19} spin valve structures have been produced by sputtering deposition and analyzed by ferromagnetic resonance. Two well resolved modes are identified in the FMR spectra as the resonance of the Co and NiFe layers. The in-plane angular dependence of the resonance peaks for the NiFe layer present a small asymmetry, which is attributed to the interlayer exchange interaction between ferromagnetic layers across the nonmagnetic spacer. The data were analyzed considering the exchange bias at the IrMn/Co interface and the indirect coupling between Co and NiFe. The in-plane angular dependence of the resonance fields of both Co and NiFe layers present an upward (downward) shift for antiferromagnetic (ferromagnetic) coupling with respect to a system with no interlayer coupling.

• OSTI ID: 21560176
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 8 Vol. 109; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALLOYS
ANGULAR MOMENTUM
ANTIFERROMAGNETIC MATERIALS
ANTIFERROMAGNETISM
ASYMMETRY
COBALT
COUPLING
ELEMENTS
EXCHANGE INTERACTIONS
FERROMAGNETIC MATERIALS
FERROMAGNETIC RESONANCE
INTERACTIONS
INTERFACES
IRIDIUM ALLOYS
IRON ALLOYS
LAYERS
MAGNETIC MATERIALS
MAGNETIC RESONANCE
MAGNETISM
MANGANESE ALLOYS
MATERIALS
METALS
NICKEL ALLOYS
PARTICLE PROPERTIES
PERMALLOY
PLATINUM METAL ALLOYS
PLATINUM METALS
REFRACTORY METALS
RESONANCE
RUTHENIUM
SPECTRA
SPIN
TRANSITION ELEMENT ALLOYS
TRANSITION ELEMENTS