Structure, magnetic and magnetoresistance properties of Pr0.67Sr0.33MnO3 manganite oxide prepared by ball milling method

• Published in: Journal of magnetism and magnetic materials Vol. 324; no. 13; pp. 2030 - 2033
• Main Authors: Chérif, W., Ellouze, M., Lehlooh, A.-F., Elhalouani, F., Mahmood, S.H.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.07.2012; Elsevier
• Subjects: Ball milling; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Crystallites; Exact sciences and technology; Magnetic fields; Magnetic properties and materials; Magnetic properties of nanostructures; Magnetoresistance; Magnetoresistivity; Magnetotransport phenomena, materials for magnetotransport; Manganite; Manganites; Mecano-synthesis; Perovskite; Physics; Semiconductors; Structure; X-rays; Perovskite; Mecano-synthesis; Manganite; Structure; Magnetoresistance; Magnetic polarons; Scanning electron microscopy; Curie point; Ball mill; Magnetic field effects; Perovskites; XRD; Magnetic transitions; Nanoparticles; Orthorhombic lattices; Semiconductivity; Ferromagnetic-paramagnetic transitions; Manganites
• ISSN: 0304-8853
• DOI: 10.1016/j.jmmm.2012.02.003

A sample of Pr0.67Sr0.33MnO3 nanoparticles was synthesized by the ball milling method. X-ray diffraction pattern of the sample showed orthorhombic system with Pnma space group. The average crystallite size of 110nm was obtained by both Scanning Electron Microscopy and X-ray diffraction. Magnetic measurements showed para-to-ferromagnetic transition with a Curie temperature of TC=269K. Electrical investigations showed that all our samples exhibit a semi-conducting behavior above TC and a metallic-like one at lower temperatures. The sample exhibited a large magnetoresistance of 30% at room temperature in an applied magnetic field of 2T. The transport and the magnetic properties were interpreted in terms of the existence of magnetic polarons in the sample. ► Magnetic and structural properties of Pr0.67Sr0.33MnO3 nanoparticles. ► Average particle size from 110nm fabricated by mechanical system. ► Large magnetoresistance of 30% at room temperature.