X-ray absorption near edge structure studies of colossal magnetoresistance ferromagnet (La1.4Sr1.6)Mn2O7
Journal
Solid State Communications
Journal Volume
105
Journal Issue
9
Pages
605-608
Date Issued
1998
Author(s)
Abstract
The Mn valence of a two-dimensional ferromagnet (La1.4Sr1.6)Mn2O7 with colossal magnetoresistance has been determined to be around 3.3 by using both Mn K- and L23-edge X-ray absorption near edge structure (XANES) spectra. This suggests that the chemical substitution of Sr2+ for La3+ is an effective route of hole-doping in (La1.4Sr1.6)Mn2O7 resulting in a metallic ferromagnetic transition at the temperature of around 148 K and giving rise to the colossal magnetoresistance effect at high magnetic field. © 1998 Elsevier Science Ltd.
Type
journal article