Eur. Phys. J. B 46, 535-540 (2005)
https://doi.org/10.1140/epjb/e2005-00286-0

Magnetic anisotropy of Ni modified by extreme lattice expansion

¹ Bereich Strukturforschung, Hahn-Meitner-Institut Berlin GmbH, 14109 Berlin, Germany
² Institut für Experimentalphysik (WE1), Freie Universität Berlin, 14195 Berlin, Germany
³ Technische Physik, Universität des Saarlandes, 66041 Saarbrücken, Germany and The ISOLDE-Collaboration, CERN, 1211 Genève 23, Switzerland

Corresponding author: ^a prandoli@physik.fu-berlin.de

Received: 26 January 2005
Revised: 9 May 2005
Published online: 7 September 2005

Abstract

The induced magnetism of isolated (Cd) adatoms, soft-landed onto ultrathin Ni layers grown pseudo-morphologically on Pd(001) ( Å), was studied using the perturbed angular correlation (PAC) technique. The magnitude of the induced magnetic response (magnetic hyperfine field of |5.2| T) was found to be ca. 30% smaller than on bulk Ni ( Å) surfaces. This result is compared to ab initio calculations. Additionally, the magnetic anisotropy of the induced response was found to be modified as compared to bulk Ni surfaces and the induced hyperfine field was observed to emerge from the plane at an angle of 50(5) to the surface normal. This canted magnetic anisotropy is attributed to the large lattice expansion of the ultrathin Ni film on Pd(001).