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Title: | Morphology-induced spin frustration in granular BiFeO3 thin films: Origin of the magnetic vertical shift | Authors: | Modarresi, H. Menendez, E. Lazenka, V. V. PAVLOVIC, Nikolina Bisht, M. Lorenz, M. Petermann, C. Grundmann, M. HARDY, An VAN BAEL, Marlies VAN BAEL, M J Vantomme, A. Temst, K. |
Issue Date: | 2018 | Publisher: | AMER INST PHYSICS | Source: | APPLIED PHYSICS LETTERS, 113(14) (Art N° 142402) | Abstract: | Pronounced room temperature vertical shifts in the magnetic hysteresis loops of granular, highly polycrystalline and ferromagnetic-like BiFeO3 thin films are observed upon field-cooling from a temperature above the Neel temperature of bulk BiFeO3. This is ascribed to the interplay between the preferential alignment, established by the field-cooling process, of the net magnetic moment, which arises from uncompensated antiferromagnetic spins, and the pinning of a fraction of these spins at the particle boundaries. Conversely, field-cooling of an epitaxially grown BiFeO3 film results in no vertical shift, confirming the effective role played by the particle boundaries (i.e., morphology) of the granular-like BiFeO3 films in the process of spin frustration. Published by AIP Publishing. | Notes: | [Modarresi, H.; Menendez, E.; Lazenka, V. V.; Bisht, M.; Petermann, C.; Vantomme, A.; Temst, K.] Katholieke Univ Leuven, Inst Kern En Stralingsfys, Celestijnenlaan 200 D, B-3001 Leuven, Belgium. [Menendez, E.] Univ Autonoma Barcelona, Dept Fis, E-08193 Cerdanyola Del Valles, Spain. [Pavlovic, N.; Hardy, A.; Van Bael, M. K.] UHasselt, Inst Mat Res, Agoralaan Bldg D, B-3590 Diepenbeek, Belgium. [Pavlovic, N.; Hardy, A.; Van Bael, M. K.] UHasselt, IMEC IMOMEC, Inorgan & Phys Chem, Agoralaan Bldg D, B-3590 Diepenbeek, Belgium. [Lorenz, M.; Grundmann, M.] Univ Leipzig, Felix Bloch Inst Festkorperphys, Linnestr 5, D-04103 Leipzig, Germany. [Van Bael, M. J.] Katholieke Univ Leuven, Lab Vaste Stoffys Magnetisme, Celestijnenlaan 200 D, B-3001 Leuven, Belgium. | Document URI: | http://hdl.handle.net/1942/28628 | ISSN: | 0003-6951 | e-ISSN: | 1077-3118 | DOI: | 10.1063/1.5045617 | ISI #: | 000446820600010 | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2019 |
Appears in Collections: | Research publications |
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