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  Control of exchange bias by modifying the antiferromagnet and ferromagnet-antiferromagnet interface

Raghavan, L., Ranjith, K. M., Baenitz, M., & Kanjilal, D. (2020). Control of exchange bias by modifying the antiferromagnet and ferromagnet-antiferromagnet interface. EPL, 67006, pp. 1-7. doi:10.1209/0295-5075/130/67006.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0006-C0FF-2 Version Permalink: http://hdl.handle.net/21.11116/0000-0006-C101-E
Genre: Journal Article

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 Creators:
Raghavan, Lisha1, Author
Ranjith, K. M.2, Author              
Baenitz, M.3, Author              
Kanjilal, D.1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863462              
3Michael Baenitz, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863471              

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 Abstract: This study focuses on the control of exchange bias due to the modification of antiferromagnet and ferromagnet-antiferromagnet interface. Thin films of Ni-NiO were developed by thermal evaporation and subsequent annealing to realize a ferromagnet-antiferromagnet interface in which NiO is an antiferromagnet. The thickness and composition of individual magnetic layers were measured and optimized using Rutherford backscattering spectrometry. Ion implantation in these films is carried out using 100 keV and 200 keV Cu ions such that ions get deposited in the NiO layer and at Ni-NiO interface. This method offers a unique possibility to study the influence of different magnetic layers/interface on exchange bias. The experimental results show an initial enhancement followed by a decrease in exchange bias with ion fluence using 100 keV Cu ions. Interestingly, modifications in exchange bias are found to be more prominent in films where Cu ions are implanted in the NiO layer rather than in the Ni-NiO interface.

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Language(s): eng - English
 Dates: 2020-07-212020-07-21
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1209/0295-5075/130/67006
 Degree: -

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Title: EPL
  Other : EPL: A Letters Journal Exploring the Frontiers of Physics
  Other : Europhysics Letters
  Abbreviation : Europhys. Lett.
Source Genre: Journal
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Publ. Info: Les-Ulis : EDP Science
Pages: - Volume / Issue: - Sequence Number: 67006 Start / End Page: 1 - 7 Identifier: ISSN: 0295-5075
CoNE: https://pure.mpg.de/cone/journals/resource/0295-5075