Magnetic entropy change of the layered perovskites La2−2xSr1+2xMn2O7 Academic Article uri icon

abstract

  • Magnetocaloric properties of perovskite-type manganese oxides with double Mn-O layers of composition La2-2x Sr1+2x Mn2 O7 (x=0.33 and 0.4) have been investigated. A broad peak of magnetic entropy change (-Δ SM) was observed at the Curie temperature. The shape of -Δ SM is strongly dependent on the Sr concentration. In contrast to L n1-x Ax Mn O3 perovskites, the distinct curvilinear shape of -Δ SM for perovskites with double Mn-O layers shows different magnetic mechanisms arising from magnetocrystalline anisotropy. © 2005 American Institute of Physics.

author list (cited authors)

  • Wang, A., Cao, G., Liu, Y., Long, Y. i., Li, Y., Feng, Z., & Ross, J. H.

citation count

  • 18

publication date

  • May 2005