Synthesis and characterization of double perovskites Sr2FeMo6 (M = Mo, W)
Journal
International Journal of Modern Physics B
Journal Volume
17
Journal Issue
18-20
Pages
3500-3502
Date Issued
2003
Author(s)
Abstract
We have investigated the magnetic and magnetotransport properties of monophasic double perovskites Sr 2 FeMO 6 ( M = Mo , W ). Magnetic measurements indicate that SFMO is a ferromagnet and SFWO is an antiferromagnet with T N = 35 K at H = 5 T . Large magnetoresistance ratio (MR) of ~ 22% (H = 3 T ) at room temperature (RT) was observed in the SFWO compound. However, the SFMO compound did not show any significant MR even at high fields and RT (MR~1%; H = 3 T and 300 K). The changes observed by physical measurements are supported by band structure calculations to explain the interaction between the 3d (Fe) , 4d (Mo) and 5d (W) orbitals of transition metal ions and oxygen ions.
SDGs
Type
journal article