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- Title
Experimental Study on the Magnetic and Magnetocaloric Properties of Two Perovskite Compositions, La<sub>0.7</sub>Nd<sub>0.1</sub>Sr<sub>0.2</sub>MnO<sub>3</sub> and La<sub>0.7</sub>Nd<sub>0.1</sub>Sr<sub>0.2</sub>Mn<sub>0.96</sub>In<sub>0.04</sub>O<sub>3</sub>, and Their Effect on Chemical Stability in Memory Devices
- Authors
Hassayoun, Oumayma; Baazaoui, Mohamed; Aouaini, Fatma; Alyousef, Haifa; Alrebdi, Tahani
- Abstract
The chemical stability effect was investigated using two perovskite compositions, La0.7Nd0.1Sr0.2MnO3 and La0.7Nd0.1Sr0.2Mn0.96In0.04O3. Synthesis of these perovskites was carried out by the sol–gel method. X-ray powder diffraction study, coupled with Rietveld refinement, revealed a rhombohedral structure with the R 3 ¯ c space group. The magnetic investigation showed that both compositions exhibit a second-order phase transition. La0.7Nd0.1Sr0.2MnO3 has a Curie temperature TC of 290 K and maximum magnetic entropy change value of 4.79 J kg−1 K−1, while La0.7Nd0.1Sr0.2Mn0.96In0.04O3 has a Curie temperature TC of 277 K and maximum magnetic entropy change value of 6.2 J kg−1 K−1. The critical properties of these compositions were analyzed and found to obey the mean-field model for La0.7Nd0.1Sr0.2 Mn0.96In0.04O3 and the Heisenberg model for La0.7Nd0.1Sr0.2MnO3.
- Subjects
CHEMICAL stability; MAGNETIC properties; MAGNETIC entropy; PHASE transitions; IRON-manganese alloys; X-ray powder diffraction
- Publication
Journal of Electronic Materials, 2024, Vol 53, Issue 6, p2874
- ISSN
0361-5235
- Publication type
Article
- DOI
10.1007/s11664-024-11046-4