Phys. Rev. B 84, 024411 (2011) - Violation of Hund's third rule in structurally disordered ferromagnets

Violation of Hund's third rule in structurally disordered ferromagnets

V. Kapaklis, P. T. Korelis, B. Hjörvarsson, A. Vlachos, I. Galanakis, P. Poulopoulos, K. Özdoğan, M. Angelakeris, F. Wilhelm, and A. Rogalev

Phys. Rev. B 84, 024411 – Published 7 July 2011

Abstract

Violation of Hund’s third rule caused by structural disorder is observed for the induced magnetic moment of Zr, using x-ray magnetic circular dichroism. The induced spin and orbital magnetic moments are antiparallel in the crystalline state, but parallel in an amorphous state of the investigated Co- and Fe-based materials. First-principles calculations are used to provide physical insight into the dependency of the spin-orbit coupling on the interatomic distance and coordination number.

Received 19 March 2011

DOI:https://doi.org/10.1103/PhysRevB.84.024411

©2011 American Physical Society

Authors & Affiliations

V. Kapaklis^*, P. T. Korelis, and B. Hjörvarsson

Department of Physics and Astronomy, Uppsala University, Box 516, SE-75120 Uppsala, Sweden

A. Vlachos, I. Galanakis, and P. Poulopoulos

Department of Materials Science, School of Natural Sciences, University of Patras, GR-26504 Patras, Greece

Department of Physics, Yildiz Technical University, TR-34210 Istanbul, Turkey

Department of Physics, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece

F. Wilhelm and A. Rogalev

European Synchrotron Radiation Facility (ESRF), B.P.220, FR-38043 Grenoble, France

^*Corresponding author: vassilios.kapaklis@fysik.uu.se

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Issue

Vol. 84, Iss. 2 — 1 July 2011

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