Magnetic order in epitaxial (La2/3Sr1/3MnO3)3/(BaTiO3)3 trilayer heterostructures
Abstract
The realization of artificial magnetic structures with high epitaxial quality and elevated critical temperatures remains a key challenge for spintronics. Here, we report the fabrication and characterization of epitaxial (La2/3Sr1/3MnO3)3/(BaTiO3)3 trilayer heterostructures grown by layer-by-layer laser ablation. High-resolution transmission electron microscopy, magnetization measurements, and neutron diffraction confirm their exceptional crystalline order and the absence of structural defects. Neutron diffraction reveals no antiferromagnetic at non-zero wavevector Bragg peaks, ruling out most antiferromagnetic configurations with a non zero wave vector Q. Magnetic hysteresis loops instead evidence a ferromagnetic order with a remanent moment of about 0.5 Bohr magneton per Mn atom at room temperature, persisting either in-plane or out-of-plane depending on the applied field. Our findings highlight neutron diffraction as a powerful tool for elucidating the magnetic structure of complex thin films and suggest that weak interlayer coupling through BaTiO3 leads to ferromagnetism with a high critical temperature (about 600 K).
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BibTeX
@misc{rebolini2026magnetic,
title = {{Magnetic order in epitaxial (La2/3Sr1/3MnO3)3/(BaTiO3)3 trilayer heterostructures}},
author = {E. Rebolini and H. Himanshu and K. Beauvois and S. Grenier and B. Mercey and B. Domenges and B. Ouladdiaf and C. Simon and M. B. Lepetit},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.23556},
eprint = {2610.23556},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.23556},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Magnetic order in epitaxial (La2/3Sr1/3MnO3)3/(BaTiO3)3 trilayer heterostructures
AU - E. Rebolini
AU - H. Himanshu
AU - K. Beauvois
AU - S. Grenier
AU - B. Mercey
AU - B. Domenges
AU - B. Ouladdiaf
AU - C. Simon
AU - M. B. Lepetit
PY - 2026
DA - 2026/10/19
PB - arXiv
DO - 10.48550/arxiv.2610.23556
UR - https://arxiv.org/abs/2610.23556
AB - The realization of artificial magnetic structures with high epitaxial quality and elevated critical temperatures remains a key challenge for spintronics. Here, we report the fabrication and characterization of epitaxial (La2/3Sr1/3MnO3)3/(BaTiO3)3 trilayer heterostructures grown by layer-by-layer laser ablation. High-resolution transmission electron microscopy, magnetization measurements, and neutron diffraction confirm their exceptional crystalline order and the absence of structural defects. Neutron diffraction reveals no antiferromagnetic at non-zero wavevector Bragg peaks, ruling out most antiferromagnetic configurations with a non zero wave vector Q. Magnetic hysteresis loops instead evidence a ferromagnetic order with a remanent moment of about 0.5 Bohr magneton per Mn atom at room temperature, persisting either in-plane or out-of-plane depending on the applied field. Our findings highlight neutron diffraction as a powerful tool for elucidating the magnetic structure of complex thin films and suggest that weak interlayer coupling through BaTiO3 leads to ferromagnetism with a high critical temperature (about 600 K).
ER -