Issue 36, 2023

Thickness-dependent magnetotransport properties of rocksalt NdO epitaxial thin films: observation of a ferromagnetic phase far above the Curie temperature

Abstract

We investigated magnetotransport properties of rocksalt NdO (001) epitaxial thin films with various thicknesses. For the thickness of 45 nm, the NdO thin film behaved as a ferromagnetic metal with the Curie temperature (TC) of 19 K as was reported recently. With decreasing film thickness down to 3 nm, the resistivity increased monotonically, and the TC was reduced. Intriguingly, 9 nm-thick and 12 nm-thick films showed non-zero remanent magnetization and anomalous Hall effect far above the TC, up to 40 K, indicating the emergence of a weak ferromagnetic phase above the TC.

Graphical abstract: Thickness-dependent magnetotransport properties of rocksalt NdO epitaxial thin films: observation of a ferromagnetic phase far above the Curie temperature

Supplementary files

Article information

Article type
Paper
Submitted
15 Jul 2023
Accepted
21 Aug 2023
First published
22 Aug 2023

J. Mater. Chem. C, 2023,11, 12400-12405

Thickness-dependent magnetotransport properties of rocksalt NdO epitaxial thin films: observation of a ferromagnetic phase far above the Curie temperature

D. Saito, D. Oka, K. Kaminaga, M. Kitamura, D. Shiga, H. Kumigashira and T. Fukumura, J. Mater. Chem. C, 2023, 11, 12400 DOI: 10.1039/D3TC02478D

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