Neutron Diffraction and Magnetic Study of Pr₀.₆₃M₀.₀₇Sr₀.₃MnO₃ Oxides with M = Sm and Bi
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.
M. Ellouze et al., "Neutron Diffraction and Magnetic Study of Pr₀.₆₃M₀.₀₇Sr₀.₃MnO₃ Oxides with M = Sm and Bi," Journal of Alloys and Compounds, Elsevier, Jan 2005.
The definitive version is available at http://dx.doi.org/10.1016/j.jallcom.2004.05.077
Tunisian Ministry of Scientific Research and Technology
Keywords and Phrases
Magnetization; Neutron Diffraction; Perovskite
Article - Journal
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