Magnetocaloric effect in nano- and polycrystalline manganite
arXiv:0710.5705 · doi:10.1007/s00339-007-4309-x
Abstract
samples were prepared in nano- and polycrystalline forms by sol-gel and solid state reaction methods, respectively, and structurally characterized by synchrotron X-ray diffraction. The magnetic properties determined by ac susceptibility and dc magnetization measurements are discussed. The magnetocaloric effect in this nanocrystalline manganite is spread over a broader temperature interval than in the polycrystalline case. The relative cooling power of the poly- and nanocrystalline manganites is used to evaluate a possible application for magnetic cooling below room temperature.
6 pages, 5 (double) figures, 1 table, 16 references; submitted to Appl. Phys. A