15–16 Sept 2011
Paul Scherrer Institut, Villigen, Switzerland
Europe/Zurich timezone

Magnetic exchange coupling in 3d-4f molecular nanomagnets investigated by X-ray magnetic circular dichroism

16 Sept 2011, 12:25
2m
WSLA - Foyer (Paul Scherrer Institut, Villigen, Switzerland)

WSLA - Foyer

Paul Scherrer Institut, Villigen, Switzerland

Board: 65
Poster Poster Session II (Friday) Poster session II and lunch

Speaker

Dr Jan Gui-Hyon Dreiser (Paul Scherrer Institut)

Description

Single-molecule magnets are exchange-coupled spin clusters showing slow relaxation of magnetization. In recent years, efforts have been intensified to increase the magnetization reversal barrier and thus enhance relaxation times by combining rare earth ions with transition-metal ions. Rare-earth ions exhibit very large magnetic anisotropies due to their strong spin-orbit coupling and their mostly unquenched orbital momentum. In this contribution we use X-ray magnetic circular dichroism to observe element-specific magnetization curves. In conjunction with SQUID magnetization and susceptibility measurements, we are able to obtain information about the magnetic coupling between 3d and 4f ions.

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Primary author

Dr Jan Gui-Hyon Dreiser (Paul Scherrer Institut)

Co-authors

Dr Cinthia Piamonteze (Paul Scherrer Institut) Prof. Frithjof Nolting (Paul Scherrer Institut) Prof. Harald Brune (EPF Lausanne) Dr Hoegni Weihe (University of Copenhagen) Prof. Jesper Bendix (University of Copenhagen) Mr Kasper S. Pedersen (University of Copenhagen) Prof. Oliver Waldmann (Freiburg University) Dr Stefano Rusponi (EPF Lausanne)

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