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Saloaro M, Hoffmann M, Adeagbo WA, et al. Toward Versatile Sr2FeMoO6-Based Spintronics by Exploiting Nanoscale Defects. ACS Appl Mater Interfaces. 2016;8(31):20440-7doi: 10.1021/acsami.6b04132.
Saloaro, M., Hoffmann, M., Adeagbo, W. A., Granroth, S., Deniz, H., Palonen, H., Huhtinen, H., Majumdar, S., Laukkanen, P., Hergert, W., Ernst, A., & Paturi, P. (2016). Toward Versatile Sr2FeMoO6-Based Spintronics by Exploiting Nanoscale Defects. ACS applied materials & interfaces, 8(31), 20440-7. https://doi.org/10.1021/acsami.6b04132
Saloaro, Minnamari, et al. "Toward Versatile Sr2FeMoO6-Based Spintronics by Exploiting Nanoscale Defects." ACS applied materials & interfaces vol. 8,31 (2016): 20440-7. doi: https://doi.org/10.1021/acsami.6b04132
Saloaro M, Hoffmann M, Adeagbo WA, Granroth S, Deniz H, Palonen H, Huhtinen H, Majumdar S, Laukkanen P, Hergert W, Ernst A, Paturi P. Toward Versatile Sr2FeMoO6-Based Spintronics by Exploiting Nanoscale Defects. ACS Appl Mater Interfaces. 2016 Aug 10;8(31):20440-7. doi: 10.1021/acsami.6b04132. Epub 2016 Aug 01. PMID: 27447197.
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ACS Appl Mater Interfaces. 2016 Aug 10;8(31):20440-7. doi: 10.1021/acsami.6b04132. Epub 2016 Aug 01.

Toward Versatile Sr2FeMoO6-Based Spintronics by Exploiting Nanoscale Defects.

ACS applied materials & interfaces

Minnamari Saloaro, Martin Hoffmann, Waheed A Adeagbo, Sari Granroth, Hakan Deniz, Heikki Palonen, Hannu Huhtinen, Sayani Majumdar, Pekka Laukkanen, Wolfram Hergert, Arthur Ernst, Petriina Paturi

Affiliations

  1. Wihuri Physical Laboratory, Department of Physics and Astronomy, University of Turku , Turku FI-20014, Finland.
  2. IFW Dresden , P.O. Box 27 01 16, D-01171 Dresden, Germany.
  3. Institut für Physik, Martin Luther University Halle-Wittenberg , Von-Seckendorff-Platz 1, 06120 Halle, Germany.
  4. Max Planck Institute of Microstructure Physics , Weinberg 2, 06120 Halle, Germany.
  5. Materials Research Laboratory, Department of Physics and Astronomy, University of Turku , Turku FI-20014, Finland.
  6. NanoSpin, Department of Applied Physics, Aalto University School of Science , P.O. Box 15100, FI-00076 Aalto, Finland.

PMID: 27447197 DOI: 10.1021/acsami.6b04132

Abstract

To actualize the high spintronic application potential of complex magnetic oxides, it is essential to fabricate these materials as thin films with the best possible magnetic and electrical properties. Sr2FeMoO6 is an outstanding candidate for such applications, but presently no thin film synthesis route, which would preserve the magnetic properties of bulk Sr2FeMoO6, is currently known. In order to address this problem, we present a comprehensive experimental and theoretical study where we link the magnetic and half metallic properties of Sr2FeMoO6 thin films to lattice strain, Fe-Mo antisite disorder and oxygen vacancies. We find the intrinsic effect of strain on the magnetic properties to be very small, but also that an increased strain will significantly stabilize the Sr2FeMoO6 lattice against the formation of antisite disorder and oxygen vacancies. These defects, on the other hand, are recognized to drastically influence the magnetism of Sr2FeMoO6 in a nonlinear manner. On the basis of the findings, we propose strain manipulation and reductive annealing as optimization pathways for improving the spintronic functionality of Sr2FeMoO6.

Keywords: SFMO; antisite disorder; first-principles; magnetic properties; nanoscale defects; oxygen vacancy; spintronics; strain

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