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arXiv:1810.05435 (cond-mat)
[Submitted on 12 Oct 2018]

Title:Room temperature biaxial magnetic anisotropy in La0.67Sr0.33MnO3 thin films on SrTiO3 buffered MgO (001) substrates for spintronic applications

Authors:Sandeep Kumar Chaluvadi, Fernando Ajejas, Pasquale Orgiani, Olivier Rousseau, Giovanni Vinai, Aleksandr Yu Petrov, Piero Torelli, Alain Pautrat, Julio Camarero, Paolo Perna, Laurence Mechin
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Abstract:Spintronics exploits the magnetoresistance effects to store or sense the magnetic information. Since the magnetoresistance strictly depends on the magnetic anisotropy of the system, it is fundamental to set a defined anisotropy to the system. Here, we investigate by means of vectorial Magneto-Optical Kerr Magnetometry (v-MOKE), half-metallic La0.67Sr0.33MnO3 (LSMO) thin films that exhibit at room temperature pure biaxial magnetic anisotropy if grown onto MgO (001) substrate with a thin SrTiO3 (STO) buffer. In this way, we can avoid unwanted uniaxial magnetic anisotropy contributions that may be detrimental for specific applications. The detailed study of the angular evolution of the magnetization reversal pathways, critical fields (coercivity and switching) allows for disclosing the origin of the magnetic anisotropy, which is magnetocrystalline in nature and shows four-fold symmetry at any temperature.
Subjects: Materials Science (cond-mat.mtrl-sci)
Cite as: arXiv:1810.05435 [cond-mat.mtrl-sci]
  (or arXiv:1810.05435v1 [cond-mat.mtrl-sci] for this version)
  https://doi.org/10.48550/arXiv.1810.05435
Journal reference: Appl. Phys. Lett. 113, 052403 (2018)
Related DOI: https://doi.org/10.1063/1.5020072

Submission history

From: Giovanni Vinai [view email]
[v1] Fri, 12 Oct 2018 09:55:46 UTC (652 KB)
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