Neutron diffraction and magnetic properties of Sr2Fe0.9Cr0.1MoO6

摘要

The crystalline structure of the ordered perovskite Sr2Fe0.9Cr0.1MoO6 has been determined to be tetragonal at room temperature, with lattice parameters a(0) = 5.578Angstrom and c(0) = 7.866Angstrom. The lattice volume of Cr doped sample was smaller than that of Sr2FeMoO6. Neutron diffraction patterns for the Sr2Fe0.9Cr0.1MoO6 compound have been taken at different temperatures, from 10 to 473 K. The crystal symmetry is cubic (Fra (3) over barm) in the paramagnetic phase and tetragonal(I4/mmm) in the ferrimagnetic phase. The Curie temperature of Cr doped sample is 415 K. (C) 2003 Elsevier B.V. All rights reserved. [References: 6]