| Autor: |
Harsh Bhatt, Yogesh Kumar, Champa Lal Prajapat, Christy J. Kinane, Andrew Caruana, Sean Langridge, Saibal Basu, Surendra Singh |
| Jazyk: |
angličtina |
| Rok vydání: |
2020 |
| Předmět: |
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| Zdroj: |
Advanced Materials Interfaces, Vol 7, Iss 21, Pp n/a-n/a (2020) |
| Druh dokumentu: |
article |
| ISSN: |
2196-7350 |
| DOI: |
10.1002/admi.202001172 |
| Popis: |
Abstract The experimental evidence of the exchange bias (EB) effect in epitaxial heterostructures of ferromagnetic La0.67Sr0.33MnO3 (LSMO) and paramagnetic LaNiO3 (LNO) grown on MgO(001) substrates is reported. The macroscopic magnetization measurements show a clear indication of EB in LNO/LSMO and LSMO/LNO/LSMO heterostructures. The strength of the exchange coupling rapidly reduces as the temperature is increased and almost vanishes above 50 K. Using spin dependent polarized neutron reflectometry (PNR) detailed depth dependent magnetization profiles of the heterostructures are investigated to understand the role of interface magnetism in the observed EB. PNR results establish the emergence of the interfacial ferromagnetic LNO layer of thickness ≈22–35 Å (≈6–9 unit cell) and magnetization ≈80 emu cc−1 at the LNO/LSMO interface for T |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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