TY - JOUR
T1 - Paramagnetic Nd sublattice and thickness-dependent ferromagnetism in Nd2NiMnO6 double perovskite thin films
AU - Spring, Jonathan
AU - De Luca, Gabriele
AU - Jöhr, Simon
AU - Herrero-Martín, Javier
AU - Guillemard, Charles
AU - Piamonteze, Cinthia
AU - Rosário, Carlos M.M.
AU - Hilgenkamp, Hans
AU - Gibert, Marta
N1 - Publisher Copyright:
© 2023 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
PY - 2023/10
Y1 - 2023/10
N2 - We investigate ferromagnetic and insulating thin films of the B-site ordered double perovskite Nd2NiMnO6 (NNMO) grown by radio frequency off-axis magnetron sputtering. The films grow epitaxially strained on a selection of substrates and display a strain-independent and bulklike TC of 200K at a thickness of 30 unit cells. We explore the thickness dependence of the NNMO/SrTiO3(001) system and find ferromagnetism down to ultralow thicknesses of only 3 unit cells (∼1.2nm). Below 10 unit cells, the magnetic properties deteriorate due to an interfacial charge transfer caused by the polar discontinuity at the NNMO/SrTiO3 interface. A detailed x-ray magnetic circular dichroism study allows us to separate the magnetic components into a robust ferromagnetic Ni/Mn sublattice and a paramagnetic Nd sublattice.
AB - We investigate ferromagnetic and insulating thin films of the B-site ordered double perovskite Nd2NiMnO6 (NNMO) grown by radio frequency off-axis magnetron sputtering. The films grow epitaxially strained on a selection of substrates and display a strain-independent and bulklike TC of 200K at a thickness of 30 unit cells. We explore the thickness dependence of the NNMO/SrTiO3(001) system and find ferromagnetism down to ultralow thicknesses of only 3 unit cells (∼1.2nm). Below 10 unit cells, the magnetic properties deteriorate due to an interfacial charge transfer caused by the polar discontinuity at the NNMO/SrTiO3 interface. A detailed x-ray magnetic circular dichroism study allows us to separate the magnetic components into a robust ferromagnetic Ni/Mn sublattice and a paramagnetic Nd sublattice.
UR - https://www.scopus.com/pages/publications/85175403394
U2 - 10.1103/PhysRevMaterials.7.104407
DO - 10.1103/PhysRevMaterials.7.104407
M3 - Article
AN - SCOPUS:85175403394
SN - 2475-9953
VL - 7
JO - Physical Review Materials
JF - Physical Review Materials
IS - 10
M1 - 104407
ER -
