journal article·2020-06-01Open access

Layer-dependence of macroscopic and atomic magnetic correlations in Co/Pd multilayers

N. Soriano, B. Mora, V. Rollano, P. Gargiani, C. Quirós, F. Gálvez, C. Redondo, J. del Valle, I. Montoya, A. Gómez, E. M. González, E. Navarro, M. Vélez, J. M. Alameda, M. Valvidares, J. L. Vicent, R. Morales

AIP Advances· Volume 10· Issue 6

Abstract

The development of multilayered materials with engineered magnetic properties compels a deep knowledge of physical properties at the atomic scale. The magnetic anisotropy is a key property in these materials. This work accounts for the magnetic anisotropy energy and its correlation with atomic properties of Co/Pd multilayers with the number of Co/Pd repetitions. Magnetometry measurements confirm stronger perpendicular magnetic anisotropy energies as the number of repetitions increases up to 40. However, the intrinsic anisotropy, related to the Co–Pd orbital hybridization and spin–orbit coupling, saturates at 15 repetitions. This finding is supported by x-ray magnetic circular dichroism analysis that reveals a direct correlation of the atomic Co and Pd orbital magnetic moments and the effective anisotropy of the system. The proximity effect that accounts for the Pd induced magnetization, along with the increasing Co moment, provides a suitable mechanism for the observed anisotropy energy layer dependence.
Source: crossref · Quality: baseline

Research context

OpenAlex topics: Magnetic properties of thin films · Magnetic and transport properties of perovskites and related materials · Theoretical and Computational Physics

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Physical-Chemistry, University of the Basque Country UPV/EHU 1 , 48940 Leioa, Spain

IMDEA-Nanociencia 2 , Faraday 8, Cantoblanco, 28049 Madrid, Spain

ALBA Synchrotron Light Source 3 , Cerdanyola del Valles, 08290 Barcelona, Spain

Depto. Física, Fac. Ciencias, Universidad de Oviedo 4 , Calle Federico García Lorca 18, 33007 Oviedo, Spain

Centro de Investigación en Nanomateriales y Nanotecnología—CINN (CSIC—Univ. de Oviedo—Principado de Asturias) 5 , 33940 El Entrego, Spain

Depto. Física Materiales, Facultad CC. Fisicas, Universidad Complutense 6 , 28040 Madrid, Spain

Department of Physical-Chemistry and BCMaterials, University of the Basque Country UPV/EHU 7 , 48940 Leioa, Spain

IKERBASQUE, Basque Foundation for Science 8 , 48011 Bilbao, Spain

Funding

Agencia Estatal de Investigación · Ministerio de Economía, Industria y Competitividad, Gobierno de España · Horizon 2020 Framework Program · Eusko Jaurlaritza

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