Berlin 2008 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 21: Magnetic Thin Films II

MA 21.12: Vortrag

Mittwoch, 27. Februar 2008, 17:00–17:15, H 1012

A Neutron Scattering Study on the Antiferromagnet in an exchange biased systems — •Danica Solina¹, Dieter Lott¹, Wolfgang Schmidt², Yu-Chang Wu³, Jochen Fenske¹, Chih-Huang Lai³, and Andreas Schreyer¹ — ¹Institute of Materials Research, GKSS Research Centre, Geesthacht, Germany — ²Institut-Laue-Langevin, Grenoble, France — ³Department of Materials Science and Engineering, National Tsing Hua University, HsinChu, Taiwan

The magnetic structure of single crystal antiferromagnetic PtMn that biases CoFe has been studied using neutron scattering. Polarized neutron reflection (PNR) was used to determine the switching behaviour of the ferromagnetic layer and polarized neutron diffraction (PND) to probe the magnetic configuration of the anti-ferromagnetic layer. PNR suggests a combination of rotation and domain formation. Changes were observed in the PND patterns taken at points around the hysteresis loop. The diffraction data has been simulated with a 'twisting' of part of the anti-ferromagnetic layer as the ferromagnetic layer changes.