Robust ferromagnetism in insulating La$_2$NiMnO$_6$ thin films

G. De Luca; J. Spring; U. Bashir; M. Campanini; R. Totani; C. Dominguez; A. Zakharova; M. Döbeli; T. Greber; M. D. Rossell; C. Piamonteze; M. Gibert

doi:10.1063/5.0055614

Robust ferromagnetism in insulating La$_2$NiMnO$_6$ thin films

Materials Science 2021-08-25 v2 Mesoscale and Nanoscale Physics

Authors: G. De Luca , J. Spring , U. Bashir , M. Campanini , R. Totani , C. Dominguez , A. Zakharova , M. Döbeli , T. Greber , M. D. Rossell , C. Piamonteze , M. Gibert

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Abstract

The field of oxide spintronics can strongly benefit from the establishment of robust ferromagnetic insulators with near room-temperature Curie temperature. Here we investigate the structural, electronic, and magnetic properties of atomically-precise epitaxially-strained thin films of the double perovskite La $_2$ NiMnO $_6$ (LNMO) grown by off-axis radio-frequency magnetron sputtering. We find that the films retain both a strong insulating behavior and a bulk-like Curie temperature in the order of 280 K, nearly independently from epitaxial strain conditions. These results suggest a prospective implementation of LNMO films in multi-layer device architectures where a high-temperature ferromagnetic insulating state is a prerequisite.

Keywords

ferromagnetic insulators La2NiMnO6 thin films epitaxial strain Curie temperature oxide spintronics double perovskite

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@article{arxiv.2101.07530,
  title  = {Robust ferromagnetism in insulating La$_2$NiMnO$_6$ thin films},
  author = {G. De Luca and J. Spring and U. Bashir and M. Campanini and R. Totani and C. Dominguez and A. Zakharova and M. Döbeli and T. Greber and M. D. Rossell and C. Piamonteze and M. Gibert},
  journal= {arXiv preprint arXiv:2101.07530},
  year   = {2021}
}

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15 pages, 4 figures

Robust ferromagnetism in insulating La$_2$NiMnO$_6$ thin films

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