The Photoluminescence and Ferromagnetic Behavior of Sprayed LaMnO2.75 thin Layers

Authors

  • A. Arrar
  • M. Benhaliliba
  • A. Boukhachem
  • A. Ayeshamariam

Abstract

The study of Sr-doped lanthanum manganites (La1-xSrxMnO2.75, LSMO) with x= 0 and 0.4 are synthesized by spray pyrolysis method onto glass substrate at 460°C. The structural properties of the prepared samples are characterized by X-ray diffraction (XRD) technique and some parameters such as lattice parameters, crystallite size, microstrain and dislocation density have been reported. It is shown that LaMnO2.75: Sr thin films crystallize in orthorhombic structure with a preferred orientation of the crystallites along (040) direction. In addition, atomic force microscopy (AFM) investigation displays the nanosphere aspect. UV-VIS-IR measurements show that the average transmittance of the LaMnO2.75: Sr thin films is greater than 70% and optical band gap (Eg) of 2.85 eV is recoded. The photoluminescence (PL) measurements exhibit emission in the visible region, which is located at 530 nm. Finally, magnetic measurements at room temperature using vibrating sample magnetometer (VSM) technique reveal ferromagnetic behavior.

Keywords:

La1-xSrxMnO2.75; LSMO; Sr doping; Structural properties; AFM; magnetic properties.

Author Biographies

A. Arrar

Physical materials department, Ahmed ZABANA university centre, BP 48000, Relizane, Algeria.

M. Benhaliliba

Physics Faculty, USTOMB University POBOX 1505 Mnaouer Oran Algeria.
Film Device Fabrication-Characterization and Application FDFCA Research Group USTOMB, 31130 Oran Algeria.

A. Boukhachem

Unité de physique des dispositifs a semi-conducteurs, Faculté des sciences de Tunis, Tunis El Manar University, 2092 Tunis, Tunisia.

A. Ayeshamariam

Department of Physics, Khadir Mohideen College, Adirampattinam, Tamilnadu, India.

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Published

11/21/2022

Issue

Vol. 2 No. 1 (2016): Volume 2 Issue 1

Section

Articles