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 Sr2FeMO6 (M = Mo, W). Magnetic measurements indicate that SFMO is a ferromagnet and SFWO is an antiferromagnet with TN = 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