Title

Neutron Diffraction and Magnetic Study of Pr₀.₆₃M₀.₀₇Sr₀.₃MnO₃ Oxides with M = Sm and Bi

Abstract

We studied the crystal structure and magnetic properties of the perovskite manganites Pr0.63M0.07Sr0.3MnO3 with M = Sm and Bi, as a function of the average size of the a cation site. Neutron diffraction investigations show that our synthesized samples crystallize in orthorhombic symmetry with Pnma space group with distortion of the Mnsingle bondOsingle bondMn angles. Magnetic measurements versus temperature in an applied magnetic field of 500 Oe show that all our samples exhibit a paramagnetic to ferromagnetic transition at low temperature. The Curie temperature Tc decreases from 265 K for the parent phase to 325 K for the Sm substituted sample.

Department(s)

Physics

Sponsor(s)

Tunisian Ministry of Scientific Research and Technology

Keywords and Phrases

Magnetization; Neutron Diffraction; Perovskite

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2005 Elsevier, All rights reserved.

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