Surface engineering with Ar+/O2+ ion beam bombardment : Tuning the electronic and magnetic behavior of Ni80Fe20/La0.7Sr0.3MnO3/SrTiO3(001) junctions

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

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Author(s)

  • I. Bergenti
  • P. K. Manna
  • C.-H. Lin
  • P. Graziosi
  • X. Liu
  • G. L. Causer
  • F. Liscio
  • V. A. Dediu
  • J. van Lierop
  • F. Klose
  • K.-W. Lin

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article number183903
Journal / PublicationJournal of Applied Physics
Volume124
Issue number18
Online published13 Nov 2018
Publication statusPublished - 14 Nov 2018

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Publisher's Copyright Statement
  • COPYRIGHT TERMS OF DEPOSITED FINAL PUBLISHED VERSION FILE: This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in I. Bergenti, P. K. Manna, C.-H. Lin, P. Graziosi, X. Liu, G. L. Causer, F. Liscio, A. Ruotolo, V. A. Dediu, J. van Lierop, F. Klose, and K.-W. Lin , "Surface engineering with Ar+/O2+ ion beam bombardment: Tuning the electronic and magnetic behavior of Ni80Fe20/La0.7Sr0.3MnO3/SrTiO3(001) junctions", Journal of Applied Physics 124, 183903 (2018) and may be found at https://doi.org/10.1063/1.5049235.
Link to Scopus https://www.scopus.com/record/display.uri?eid=2-s2.0-85056572334&origin=recordpage
Permanent Link https://scholars.cityu.edu.hk/en/publications/publication(c5a8d249-ad4a-497a-863a-4b80830961a1).html

Abstract

The magnetic and magnetotransport properties of Ni80Fe20/La0.7Sr0.3MnO3 (NiFe/LSMO) bilayers were investigated after bombarding the LSMO surface with low-energy Ar+ or O2+/Ar+ ion beams before the growth of the top NiFe layer. A variety of magnetic properties are revealed, including an asymmetric two-stepped hysteresis loop with an exchange bias loop shift, and alternatively, a symmetric two-stepped hysteresis loop with an enhanced coercivity. Polarized neutron reflectometry measurements provide details of the magnetic depth profile and interface layer magnetism at different temperatures. The LSMO surface modifications determine a complex magnetic and electric NiFe/LSMO interface having a strong effect on the magnetoresistance of the bilayer. Surface engineering based on ion beam bombardment is presented as a promising technique for optimizing the electronic and magnetic properties of NiFe/LSMO junctions for future device applications.

Research Area(s)

  • NEUTRON REFLECTOMETRY, SPIN POLARIZATION, TUNNEL-JUNCTIONS, LA0.7SR0.3MNO3, FILMS, MAGNETORESISTANCE, INTERFACE

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Publication fingerprints text

100
Ion Implantation Material Science
100
Magnetic Property Material Science
100
Surface Engineering Material Science
100
surfaces INIS
100
ion implantation INIS
100
layers INIS
100
oxygen INIS
100
engineering INIS
100
tuning INIS
100
junctions INIS
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Citation Format(s)

[ RIS ] [ BibTeX ]
Surface engineering with Ar+/O2+ ion beam bombardment: Tuning the electronic and magnetic behavior of Ni80Fe20/La0.7Sr0.3MnO3/SrTiO3(001) junctions. / Bergenti, I.; Manna, P. K.; Lin, C.-H. et al.
In: Journal of Applied Physics, Vol. 124, No. 18, 183903, 14.11.2018.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

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