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Tm3Fe5O12/Pt Heterostructures with Perpendicular Magnetic Anisotropy for Spintronic Applications

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Author(s)

  • Andy Quindeau
  • Can O. Avci
  • Wenqing Liu
  • Congli Sun
  • Maxwell Mann
  • Astera S. Tang
  • Mehmet C. Onbasli
  • David Bono
  • Paul M. Voyles
  • Yongbing Xu
  • Jason Robinson
  • Geoffrey S D Beach
  • Caroline A. Ross

Department/unit(s)

Publication details

JournalAdvanced Electronic Materials
DateAccepted/In press - 12 Dec 2016
DateE-pub ahead of print - 12 Dec 2016
DatePublished (current) - 9 Jan 2017
Issue number1
Volume3
Number of pages8
Early online date12/12/16
Original languageEnglish

Abstract

With recent developments in the field of spintronics, ferromagnetic insulator (FMI) thin films have emerged as an important component of spintronic devices. Ferrimagnetic yttrium iron garnet in particular is an excellent insulator with low Gilbert damping and a Curie temperature well above room temperature, and has been incorporated into heterostructures that exhibit a plethora of spintronic phenomena including spin pumping, spin Seebeck, and proximity effects. However, it has been a challenge to develop high quality sub-10 nm thickness FMI garnet films with perpendicular magnetic anisotropy (PMA) and PMA garnet/heavy metal heterostructures to facilitate advances in spin-current and anomalous Hall phenomena. Here, robust PMA in ultrathin thulium iron garnet (TmIG) films of high structural quality down to a thickness of 5.6 nm are demonstrated, which retain a saturation magnetization close to bulk. It is shown that TmIG/Pt bilayers exhibit a large spin Hall magnetoresistance (SMR) and SMR-driven anomalous Hall effect, which indicates efficient spin transmission across the TmIG/Pt interface. These measurements are used to quantify the interfacial spin mixing conductance in TmIG/Pt and the temperature-dependent PMA of the TmIG thin film.

Bibliographical note

© 2016, WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details.

    Research areas

  • anomalous Hall effect, magnetic anisotropy, perpendicular magnetic insulators, spintronics, thulium iron garnet

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