Handling magnetic and structural properties of EuMnO3 thin films by the combined effect of Lu doping and substrate strain

• Type: Article in International Scientific Journal
• Date: 2018

Authors

Romaguera Barcelay, Y (Author) Other; Figueiras, FG (Author) FCUP; Agostinho Moreira, JA (Author) FCUP; Perez de la Cruz, J (Author) Other; Tavares, PB (Author) Other; Almeida, A (Author) Other

Journal

Title: Journal of Alloys and Compounds

Vol. 762

Pages: 319-325

ISSN: 0925-8388

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 3 Citations

Scopus - 3 Citations

Other information

Authenticus ID: P-00N-ZZG

DOI: 10.1016/j.jallcom.2018.05.223

Abstract (EN): This work aims to understand the alterations induced by film/substrate lattice mismatch in structure, lattice dynamics and magnetic response of orthorhombic Eu1-xLuxMnO3 thin films within the range 0 <= x <= 0.4, when compared to results reported for ceramics with analogous composition. Thin films, which have been deposited onto Pt/Ti/SiO2/Si(100) oriented substrates via chemical method, exhibit noteworthy modifications in the magnetic ordering properties and, contrary to ceramics, do not show any sharp phase transition to the paramagnetic state. This reveals an induced ferromagnetic response in the films which is stable up to 100 K. X-ray diffraction and Raman spectroscopy measurements have been performed to identify the mechanically compressive state induced by the substrate and Lu doping. This facilitates insight into the magnetoelastic coupling effect in these films which is driven by alterations in electronic orbital overlapping and the associated antiferromagnetic superexchange interactions.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7