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Synthesis,Structure and Magnetic Properties of Layered Perovskite Sm1.5SrBa0.5Mn2O7 |
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| Authors: | M. Oubla M. Lamire H. Lassri S. Benmokhtar E. K. Hlil |
| Affiliation: | 1. Laboratoire de Physico-Chimie des Matériaux Inorganiques, Faculté des Sciences A?n-Chock, Université Hassan II, B.P. 5366, Maarif, Casablanca, Morocco 2. Laboratoire de Physique des Matériaux, Micro-électronique, Automatique et Thermique, Faculté des Sciences A?n-Chock, Université Hassan II, B.P. 5366, Maarif, Casablanca, Morocco 3. Laboratory of chemistry and Physics of Materials, Department of chemistry, Faculty of Sciences, Ben Msik, Casablanca, Morocco 4. Institut Néel, CNRS et Université Joseph Fourier, BP 166, 38042, Grenoble cedex 9, France |
| Abstract: | The layered perovskite oxide Sm1.5SrBa0.5Mn2O7 was synthesized by the conventional method of co-precipitation. Its structure has been solved by powder X-ray diffraction. The diffraction patterns are consistent with the I4/mmm symmetry, with tetragonal lattice parameters a=3.8398(7) Å and c=20.3814(5) Å. The structure of Sm1.5SrBa0.5Mn2O7 is similar to Sr3Ti2O7. Magnetic measurements were also performed in the temperature range 2–360 K. They showed a strong presence of antiferromagnetic interactions below Neel temperature T N=25 K. The variation of the magnetization with the magnetic field in a temperature of 5 K was also analyzed. No saturation was observed up to the high applied magnetic field of 10 T. |
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