Collapse of charge ordering and enhancement of magnetocaloric effect in nanocrystalline La0.35Pr0.275Ca0.375MnO3

• DOI: 10.1063/1.3526380
• Publication Date: 2010-12-13T23:24:27Z
• Authors: M. H. Phan; S. Chandra; N. S. Bingham; H. Srikanth; C. L. Zhang; S. W. Cheong; T. D. Hoang; H. D. Chinh
• Keywords: Magnetic refrigeration; Nanocrystalline material; Hysteresis; Manganite

We demonstrate the possibility of enhancing both magnetocaloric effect (MCE) and refrigerant capacity (RC) in nanostructured mixed phase manganites. A comparative study magnetic properties La0.35Pr0.275Ca0.375MnO3 single crystalline nanocrystalline forms is presented. While conventional trend reduction magnetization MCE with nanostructuring, we show that opposite true case The charge-ordered state largely suppressed ferromagnetic order established sample an average particle size 50 nm. Consequently, a strong enhancement RC thermal field hysteresis losses are achieved sample. This finding opens up way exploring materials at nanometer scale for active refrigerators.