Structural and magnetic characterization of LaSrMnO3 thin films deposited by laser ablation on MgO substrates

• Type: Article in International Scientific Journal
• Date: 2010

Authors

Gomes, IT (Author) Other; Almeida, BG (Author) Other; Lopes, AML (Author) Other; araujo, j. p. (Author) FCUP; Barbosa, J (Author) Other; Mendes, JA (Author) Other

Journal

Title: Journal of Magnetism and Magnetic Materials

Vol. 322 No. 9-12

Pages: 1174-1177

ISSN: 0304-8853

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 13 Citations

ISI Web of Science

Scopus - 13 Citations

Scientific classification

FOS: Natural sciences > Physical sciences

Other information

Authenticus ID: P-003-72C

DOI: 10.1016/j.jmmm.2009.06.072

Abstract (EN): La2/3Sr1/3MnO3-delta thin films were deposited by laser ablation on MgO substrates under low oxygen pressure cool down. Their structural and magnetic properties are presented. The magnetic and electrical resistivity measurements indicate a reduction of the Curie and the metal-insulator transition temperatures due to the formation of magnetic inhomogeneneous films, where clusters of a metallic phase are mixed in a magnetically disordered insulating matrix. By a low-angle X-ray reflectivity study we show that the thin films are chemically inhomogeneous with an oxygen deficiency in bulk of the film when compared with the film/air interfacial region.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 4