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2018 | 133 | 3 | 548-551
Article title

Structure and Magnetism of LSMO/BTO/MgO/LSMO Multilayers

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EN
Abstracts
EN
A multiferroic tunnel junction (MFTJ) is a promising device for future memory systems with discrete and different logic states which are controlled by a combination of electric and magnetic fields. The goal of ongoing research is to present ferroelectric and ferromagnetic properties, especially at room temperature (RT), represented as high values of tunnel electroresistance (TER) and tunnel magnetoresistance (TMR). A key aspect is the appropriate preparation of a sample allowing epitaxial growth. The thin layers were prepared by pulsed laser deposition on atomically smooth monocrystalline SrTiO₃ (STO) substrates. The ferromagnetic metal layers La_{0.67}Sr_{0.33}MnO₃ (LSMO) are separated by a layer of a ferroelectric insulator - BaTiO₃ (BTO). The same structure of LSMO, BTO and STO (perovskite) and a similar lattice constant make it possible to obtain high-quality heterostructures. Magnetic measurements confirm differences in the magnetic coercivity of the top and bottom LSMO layer, which allows to obtain their parallel and antiparallel magnetization orientation. A modification of the interfaces of BTO by thin MgO layer enables an increase in the value of the TER effect.
Keywords
EN
Publisher

Year
Volume
133
Issue
3
Pages
548-551
Physical description
Dates
published
2018-03
Contributors
author
  • Faculty of Physics and Applied Computer Science, AGH University of Science and Technology, Kraków, Poland
author
  • Academic Centre for Materials and Nanotechnology, AGH University of Science and Technology, Kraków, Poland
author
  • Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, Kraków, Poland
author
  • Department of Electronics, Faculty of Informatics, Electronics and Telecommunications, AGH University of Science and Technology, Kraków, Poland
author
  • Academic Centre for Materials and Nanotechnology, AGH University of Science and Technology, Kraków, Poland
author
  • Faculty of Physics and Applied Computer Science, AGH University of Science and Technology, Kraków, Poland
  • Academic Centre for Materials and Nanotechnology, AGH University of Science and Technology, Kraków, Poland
References
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv133n3p066kz
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