Eur. Phys. J. B 45, 267-271 (2005)
https://doi.org/10.1140/epjb/e2005-00179-2

Pulsed inductive microwave magnetometer response calculated for IrMn/FeNi bilayers

¹ Institute for Solid State Physics, Vienna University of Technology, Wiedner Hauptstrasse 8-10, 1040 Vienna, Austria
² University of Sheffield, Department of Engineering Materials, Sir Robert Hadfield Building, Mappin Street, Sheffield, S1 3JD, UK

Corresponding author: ^a fdorf@magnet.atp.tuwien.ac.at

Received: 15 September 2004
Revised: 19 January 2005
Published online: 28 June 2005

Abstract

Micromagnetic simulations of a pulsed inductive microwave magnetometer (PIMM) experiment are performed using a well established model for exchange bias. The model (Interacting Grain Model) consists of ferromagnetic grains and antiferromagnetic grains with randomly distributed easy axes. A perfectly compensated interface between the ferromagnet and the antiferromagnet is assumed which leads to spin flop coupling. The antiferromagnetic layer is modelled as two totally antiparallel sublattices with a small intergrain exchange between each antiferromagnetic sublattice. Simulations of an experimental PIMM setup provide a shift of the minimum of the resonance frequency which is also observered experimentally.