2011/07/16 by V. B. Naik, Naik, V. B., R. Mahendiran +1
Materials Science · Physics and Astronomy · #FOS: Physical sciences #Magnetic and transport properties of perovskites and related materials #Materials Science (cond-mat.mtrl-sci) #Multiferroics and related materials #Shape Memory Alloy Transformations #cond-mat.mtrl-sci
paper · pdf · doi:10.48550/arxiv.1107.3233
12 pages, 3 figures
arxiv created 2011/07/16 · openalex publication_date 2011/07/16 · arxiv updated 2011/07/19 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We report magnetic and magnetocaloric properties of Sm0.6-xLaxSr0.4MnO3 (x = 0-0.6). A rapid increase around TC and an anomalous peak at a temperature T*<<TC occur in magnetization which lead to normal and inverse magnetocaloric effects (MCE), respectively. While TC increases with increasing x (TC=118 K for x=0 and TC=363 K for x=0.6), T* increases from 30 K (x=0) to 120 K (x=0.4) and then decreases to 105 K (x=0.5). The \DeltaSm reaches +1.07 Jkg-1K-1 at 10 K and -4 Jkg-1K-1 around TC in x=0.4 for ΔH=5T. The inverse MCE is attributed to antiferromagnetic coupling between Sm-4f and Mn-3d magnetic moments.