Awana_2020_Mater._Res._Express_7_106406.pdf (1.12 MB)
Download file

Magnetic and structural properties of CoFeB thin films grown by pulsed laser deposition

Download (1.12 MB)
journal contribution
posted on 13.11.2020, 12:18 by Geet Awana, Chris Cox, Guru Venkat, Kelly MorrisonKelly Morrison, Zhaoxia ZhouZhaoxia Zhou, Dirk Backes
The emergence of thin film CoFeB has driven research and industrial applications in the past decades, with the magnetic random access memory (MRAM) the most prominent example. Because of its beneficial properties, it fulfills multiple functionalities as information-storing, spin-filtering, and reference layer in magnetic tunnel junctions. In future, this versatility can be exploited beyond the traditional applications of spintronics by combining with advanced materials, such as oxide-based materials. Pulsed laser deposition (PLD) is their predominant growth-method, and thus the compatibility of CoFeB with this growth technique will be tested here. This encompasses a comprehensive investigation of the structural and magnetic propoperties. In particular, we find a substantial 'dead' magnetic layer and confirm that it is caused by oxidation employing the x-ray magnetic circular dichroism (XMCD) effect. The low damping encountered in vector network analyzer-based ferromagnetic resonance (VNA-FMR) renders them suitable for magnonics applications. These findings demonstrate that CoFeB thin films are compatible with emergent, PLD-grown materials, ensuring their relevance for future applications.

Funding

Reliable, Scalable and Affordable Thermoelectrics: Spin Seebeck Based Devices for Energy Harvesting

Engineering and Physical Sciences Research Council

Find out more...

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering
  • Science

Department

  • Materials
  • Physics

Published in

Materials Research Express

Volume

7

Issue

10

Publisher

IOP Publishing

Version

VoR (Version of Record)

Rights holder

© The Authors

Publisher statement

This is an Open Access Article. It is published by IOP Publishing under the Creative Commons Attribution 4.0 International Licence (CC BY 4.0). Full details of this licence are available at: https://creativecommons.org/licenses/by/4.0/

Acceptance date

14/10/2020

Publication date

2020-10-23

Copyright date

2020

ISSN

2053-1591

eISSN

2053-1591

Language

en

Depositor

Dr Zhaoxia Zhou. Deposit date: 12 November 2020

Article number

106406