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, 22, 62)21_Publication in refereed journal

2 Scopus Citations
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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

Detail(s)

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

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

Citation Format(s)

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.; Graziosi, P.; Liu, X.; Causer, G. L.; Liscio, F.; Ruotolo, A.; Dediu, V. A.; van Lierop, J.; Klose, F.; Lin, K.-W.

In: Journal of Applied Physics, Vol. 124, No. 18, 183903, 14.11.2018.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal