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Perpendicular magnetic anisotropy in compressive strained La0.67Sr0.33MnO3 films

  • Zhengyu Xiao
  • Fei Zhang
  • Muhammad Akhyar Farrukh
  • Rui Wang
  • Guowei Zhou
  • Zhiyong QuanEmail author
  • Xiaohong XuEmail author
Electronic materials
  • 31 Downloads

Abstract

Perpendicular magnetic anisotropy (PMA) plays a critical role in spintronics, giving rise to improvements in fundamental research and industrial production. Generally, PMA originates mainly from the spin–orbit interaction with perpendicular orbital moment. However, electron orbitals are difficult to tune once they emerge. Here, we propose a simple and effective method for preparing (001)-oriented ultrathin La0.67Sr0.33MnO3 (LSMO) films with PMA, which is induced by compressive strain and surface symmetry breaking. Moreover, PMA was effectively strengthened by means of annealing under applied magnetic field. X-ray linear dichroism spectra reveal that PMA should be attributed to the preferential occupancy of the 3z2 − r2 orbital in LSMO films. The results presented here show that PMA can be manipulated by orbital reconstruction in perovskite manganite films under compressive strain through a simple and effective strategy. These findings illustrate a new method for designing and controlling magnetic anisotropy and might advance fundamental applications of orbital physics and spintronics.

Notes

Acknowledgements

The work was financially supported by the NSFC (Nos. 51571136, 61434002, and 51871137). The authors acknowledge the Beamline BL08U1A (Shanghai Synchrotron Radiation Facility, Shanghai, China) and Beamline BL12-a (National Synchrotron Radiation Laboratory, Hefei, China) stations for XAS measurements.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education, The School of Chemistry and Materials ScienceShanxi Normal UniversityLinfenChina
  2. 2.Research Institute of Materials ScienceShanxi Normal UniversityLinfenChina
  3. 3.Department of ChemistryForman Christian College (A Chartered University)LahorePakistan

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