Interlayer exchange coupling of antiferromagnetic NiO layers through Cu spacer

• Published in: Journal of magnetism and magnetic materials 2014, Vol.350, p.35-38
• Main Authors: Li, B., Liu, W., Zhao, X.G., Gong, W.J., Feng, J.N., Zhang, Z.D.
• Format: Article
• Language: English
• Subjects: Amplitudes; Antiferromagnetism; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Exact sciences and technology; Exchange bias; Ferromagnetism; Interfacial magnetic properties (multilayers, magnetic quantum wells, superlattices, magnetic heterostructures); Interlayer exchange coupling; Interlayers; Joining; Magnetic properties and materials; Magnetic properties of surface, thin films and multilayers; Magnetism; Oscillations; Oscillatory; Physics; Spacers; Uncompensated spin
• ISSN: 0304-8853
• DOI: 10.1016/j.jmmm.2013.09.035

The interlayer exchange coupling (IEC) of two antiferromagnetic (AF) NiO layers separated by the nonmagnetic (NM) spacer layer is observed by investigating exchange bias effect in the structure of ferromagnetic (FM)/AF/NM/AF. The IEC shows an oscillatory behavior with a period of about 1.1nm as the spacer layer thickness increases. The oscillation amplitude and phase also depend on the NiO layer thickness. A qualitative explanation of the experimental results is provided by the RKKY-like IEC between the AF uncompensated spins at the AF/NM interfaces rather than AF itself. •Interlayer exchange coupling (IEC) of two NiO layers separated is observed.•The IEC shows an oscillatory behavior with a period of about 1.1nm.•The oscillation amplitude and phase depend on the NiO layer thickness.•A qualitative explanation is provided by the RKKY-like IEC.