Issue 8, 2021
From the journal:

Journal of Materials Chemistry C

Non-monotonic magnetic anisotropy behavior as a function of adsorbate coverage in Fe ultrathin films near the spin reorientation transition

A. Quesada, ORCID logo *ab   G. Chen,a   A. T. N'Diaye,ac   P. Wang,de   Y. Z. Wude  and  A. K. Schmida  

* Corresponding authors

a NCEM, Molecular Foundry, Lawrence Berkeley National Lab, Berkeley, CA 94720, USA
E-mail: a.quesada@icv.csic.es

b Instituto de Cerámica y Vidrio, CSIC, Madrid, Spain

c Lawrence Berkeley National Lab, Advanced Light Source, Berkeley, CA 94720, USA

d Department of Physics, State Key Laboratory of Surface Physics, Fudan University, Shanghai 200433, China

e Shanghai Research Center for Quantum Sciences, Shanghai 201315, China

Abstract

Carbon monoxide (CO) adsorption on ultrathin fcc Fe films is known to result in the rotation of magnetization from out-of-plane to in-plane. By imaging in real time the magnetic domain structure of perpendicularly magnetized Fe/(2 ML)Ni/Cu(100) films during exposure to CO, we demonstrate that the effect of adsorption on the magnetic properties occurs in two distinct stages. Initially, when CO bonds preferentially on bridge sites, perpendicular magnetic anisotropy is enhanced. Later, when on-top adsorption dominates, magnetization rotates towards in-plane in agreement with previous studies. This CO-induced spin reorientation transition (SRT) is not reversible by annealing, as CO desorption would require high temperature cycles which yield permanent structural changes in the metal films. This study demonstrates the existence of a novel non-monotonic behavior of the magnetic anisotropy as a function of adsorbate coverage. The influence of CO on ultrathin film magnetism in real time near critical points, where the anisotropy balance is extremely sensitive to small variations, reveals the previously elusive complexity of this adsorbate induced SRT.

Graphical abstract: Non-monotonic magnetic anisotropy behavior as a function of adsorbate coverage in Fe ultrathin films near the spin reorientation transition

About
Cited by
Related
Download options Please wait...

Article information

DOI
https://doi.org/10.1039/D0TC05201A
Article type
Paper
Submitted
04 Nov 2020
Accepted
26 Jan 2021
First published
27 Jan 2021
This article is Open Access
Creative Commons BY-NC license

J. Mater. Chem. C, 2021,9, 2801-2805

Permissions

Request permissions

Non-monotonic magnetic anisotropy behavior as a function of adsorbate coverage in Fe ultrathin films near the spin reorientation transition

A. Quesada, G. Chen, A. T. N'Diaye, P. Wang, Y. Z. Wu and A. K. Schmid, J. Mater. Chem. C, 2021, 9, 2801 DOI: 10.1039/D0TC05201A

This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. You can use material from this article in other publications, without requesting further permission from the RSC, provided that the correct acknowledgement is given and it is not used for commercial purposes.

To request permission to reproduce material from this article in a commercial publication, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party commercial publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements