This title appears in the Scientific Report :
2020
Please use the identifier:
http://dx.doi.org/10.1088/1361-648X/ab678c in citations.
Please use the identifier: http://hdl.handle.net/2128/23967 in citations.
Impact of growth kinetics on the interface morphology and magnetization in La 1/3 Sr 2/3 FeO 3 /La 2/3 Sr 1/3 MnO 3 heterostructures
Impact of growth kinetics on the interface morphology and magnetization in La 1/3 Sr 2/3 FeO 3 /La 2/3 Sr 1/3 MnO 3 heterostructures
The ability to create atomically perfect, epitaxial heterostructures of correlated complex perovskite oxides using state-of-art thin film deposition techniques has generated new physical phenomena at engineered interfaces. Here we report on the impact of growth kinetics on the magnetic structure and...
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Personal Name(s): | Waschk, M. |
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Sarkar, A. (Corresponding author) / Barthel, J. / Voigt, J. / Schröder, S. / Zakalek, P. / Schmitz, Markus / Kirby, B. J. / Pütter, S. / Schubert, J. / Brückel, T. | |
Contributing Institute: |
Streumethoden; JCNS-2 Wissenschaftlicher Geschäftsbereich II; VS-II Materialwissenschaft u. Werkstofftechnik; ER-C-2 Halbleiter-Nanoelektronik; PGI-9 JCNS-FRM-II; JCNS-FRM-II High Brilliance Source; JCNS-HBS JARA-FIT; JARA-FIT Streumethoden; PGI-4 |
Published in: | Journal of physics / Condensed matter Condensed matter, 32 (2020) 16, S. 165801 - |
Imprint: |
Bristol
IOP Publ.
2020
|
DOI: |
10.1088/1361-648X/ab678c |
PubMed ID: |
31899900 |
Document Type: |
Journal Article |
Research Program: |
Jülich Centre for Neutron Research (JCNS) Materials and Processes for Energy and Transport Technologies Quantum Condensed Matter: Magnetism, Superconductivity Controlling Collective States Controlling Collective States |
Subject (ZB): | |
Link: |
OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/23967 in citations.
The ability to create atomically perfect, epitaxial heterostructures of correlated complex perovskite oxides using state-of-art thin film deposition techniques has generated new physical phenomena at engineered interfaces. Here we report on the impact of growth kinetics on the magnetic structure and exchange coupling at the interface in heterostructures combining layers of antiferromagnetic La1/3Sr2/3FeO3 (LSFO) and ferromagnetic La2/3Sr1/3MnO3 (LSMO) on (0 0 1)-oriented SrTiO3 (STO) substrates. Two growth orders are investigated, (a) LSMO/LSFO/STO(0 0 1) and (b) LSFO/LSMO/STO(0 0 1), where the LSFO layer is grown by molecular beam epitaxy and the LSMO layer by high oxygen pressure sputtering. The interface has been investigated using electron microscopy and polarized neutron reflectometry. Interdiffusion over seven monolayers is observed in LSMO/LSFO (a) with an almost 50% reduction in magnetization at the interface and showing no exchange coupling. However, the exchange bias effect ( mT at 10 K) could be realized when the interface is atomically sharp, as in LSFO/LSMO (b). Our study therefore reveals that, even for well ordered and lattice-matched structures, the kinetics involved in the growth processes drastically influences the interface quality with a strong correlation to the magnetic properties. |