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Title: Deterministic and robust room-temperature exchange coupling in monodomain multiferroic BiFeO 3 heterostructures

Abstract

Exploiting multiferroic BiFeO 3 thin films in spintronic devices requires deterministic and robust control of both internal magnetoelectric coupling in BiFeO 3, as well as exchange coupling of its antiferromagnetic order to a ferromagnetic overlayer. Previous reports utilized approaches based on multi-step ferroelectric switching with multiple ferroelectric domains. Because domain walls can be responsible for fatigue, contain localized charges intrinsically or via defects, and present problems for device reproducibility and scaling, an alternative approach using a monodomain magnetoelectric state with single-step switching is desirable. Here we demonstrate room temperature, deterministic and robust, exchange coupling between monodomain BiFeO 3 films and Co overlayer that is intrinsic (i.e., not dependent on domain walls). Direct coupling between BiFeO 3 antiferromagnetic order and Co magnetization is observed, with ~90° in-plane Co moment rotation upon single-step switching that is reproducible for hundreds of cycles. Finally, this has important consequences for practical, low power non-volatile magnetoelectric devices utilizing BiFeO 3.

Authors:
 [1];  [2];  [3];  [1]; ORCiD logo [1];  [4];  [5];  [6];  [1];  [1];  [1]; ORCiD logo [7];  [7];  [1];  [1];  [8];  [9];  [3];  [1];  [1]
  1. Univ. of Wisconsin, Madison, WI (United States)
  2. Univ. of Wisconsin, Madison, WI (United States); TASC National Lab., Trieste (Italy); Temple Univ., Philadelphia, PA (United States)
  3. Science and Technology Facilities Council (STFC), Harwell Campus, Oxford (United Kingdom). Diamond Light Source, Ltd.
  4. Univ. of Oxford, Oxford (United Kingdom); Rutherford Appleton Lab., Didcot (United Kingdom)
  5. Argonne National Lab. (ANL), Argonne, IL (United States)
  6. Luxembourg Institute of Science and Technology, Alzette (Luxembourg)
  7. Paul Scherrer Inst. (PSI), Villigen (Switzerland)
  8. Argonne National Lab. (ANL), Argonne, IL (United States); Northern Illinois Univ., DeKalb, IL (United States)
  9. Univ. of Oxford, Oxford (United Kingdom)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
US Army Research Office (ARO); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1466373
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 8; Journal Issue: 1; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Saenrang, W., Davidson, B. A., Maccherozzi, F., Podkaminer, J. P., Irwin, J., Johnson, R. D., Freeland, J. W., Íñiguez, J., Schad, J. L., Reierson, K., Frederick, J. C., Vaz, C. A. F., Howald, L., Kim, T. H., Ryu, S., Veenendaal, M. v., Radaelli, P. G., Dhesi, S. S., Rzchowski, M. S., and Eom, C. B. Deterministic and robust room-temperature exchange coupling in monodomain multiferroic BiFeO3 heterostructures. United States: N. p., 2017. Web. doi:10.1038/s41467-017-01581-6.
Saenrang, W., Davidson, B. A., Maccherozzi, F., Podkaminer, J. P., Irwin, J., Johnson, R. D., Freeland, J. W., Íñiguez, J., Schad, J. L., Reierson, K., Frederick, J. C., Vaz, C. A. F., Howald, L., Kim, T. H., Ryu, S., Veenendaal, M. v., Radaelli, P. G., Dhesi, S. S., Rzchowski, M. S., & Eom, C. B. Deterministic and robust room-temperature exchange coupling in monodomain multiferroic BiFeO3 heterostructures. United States. doi:10.1038/s41467-017-01581-6.
Saenrang, W., Davidson, B. A., Maccherozzi, F., Podkaminer, J. P., Irwin, J., Johnson, R. D., Freeland, J. W., Íñiguez, J., Schad, J. L., Reierson, K., Frederick, J. C., Vaz, C. A. F., Howald, L., Kim, T. H., Ryu, S., Veenendaal, M. v., Radaelli, P. G., Dhesi, S. S., Rzchowski, M. S., and Eom, C. B. Fri . "Deterministic and robust room-temperature exchange coupling in monodomain multiferroic BiFeO3 heterostructures". United States. doi:10.1038/s41467-017-01581-6. https://www.osti.gov/servlets/purl/1466373.
@article{osti_1466373,
title = {Deterministic and robust room-temperature exchange coupling in monodomain multiferroic BiFeO3 heterostructures},
author = {Saenrang, W. and Davidson, B. A. and Maccherozzi, F. and Podkaminer, J. P. and Irwin, J. and Johnson, R. D. and Freeland, J. W. and Íñiguez, J. and Schad, J. L. and Reierson, K. and Frederick, J. C. and Vaz, C. A. F. and Howald, L. and Kim, T. H. and Ryu, S. and Veenendaal, M. v. and Radaelli, P. G. and Dhesi, S. S. and Rzchowski, M. S. and Eom, C. B.},
abstractNote = {Exploiting multiferroic BiFeO3 thin films in spintronic devices requires deterministic and robust control of both internal magnetoelectric coupling in BiFeO3, as well as exchange coupling of its antiferromagnetic order to a ferromagnetic overlayer. Previous reports utilized approaches based on multi-step ferroelectric switching with multiple ferroelectric domains. Because domain walls can be responsible for fatigue, contain localized charges intrinsically or via defects, and present problems for device reproducibility and scaling, an alternative approach using a monodomain magnetoelectric state with single-step switching is desirable. Here we demonstrate room temperature, deterministic and robust, exchange coupling between monodomain BiFeO3 films and Co overlayer that is intrinsic (i.e., not dependent on domain walls). Direct coupling between BiFeO3 antiferromagnetic order and Co magnetization is observed, with ~90° in-plane Co moment rotation upon single-step switching that is reproducible for hundreds of cycles. Finally, this has important consequences for practical, low power non-volatile magnetoelectric devices utilizing BiFeO3.},
doi = {10.1038/s41467-017-01581-6},
journal = {Nature Communications},
number = 1,
volume = 8,
place = {United States},
year = {2017},
month = {11}
}

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Works referenced in this record:

Stabilization of Monodomain Polarization in Ultrathin PbTiO 3 Films
journal, March 2006