CPL - Chalmers Publication Library
| Utbildning | Forskning | Styrkeområden | Om Chalmers | In English In English Ej inloggad.

Synthesis, structure and magnetic properties of Sr2Fe1-xGaxMoO6 (0 <= x <= 0.6) double perovskites

A. K. Azad ; A. Khan ; Sten G. Eriksson (Institutionen för kemi- och bioteknik, Oorganisk miljökemi) ; J. T. S. Irvine
Materials Research Bulletin (0025-5408). Vol. 44 (2009), 12, p. 2181-2185.
[Artikel, refereegranskad vetenskaplig]

Polycrystalline Sr2Fe1-xGaxMoO6 (0 <= x <= 0.6) materials have been synthesized by solid state reaction method and studied by neutron powder diffraction (NPD) and magnetization measurements. Rietveld analysis of the temperature dependent NPD data shows that the compounds crystallize in the tetragonal symmetry in the space group 14/m. The anti-site (AS) defects concentration increases with Ga doping, giving rise to highly B-site disordered materials. Ga doping at the Fe-site decreases the cell volume. The evolution of bond lengths and the cation oxidation states was determined from the Rietveld refinement data. The saturation magnetization and Curie temperature decreased with the increasing Ga content in the samples. Low temperature neutron diffraction data analysis and magnetization measurements confirm the magnetic interaction as ferrimagnetic in the sample. (C) 2009 Elsevier Ltd. All rights reserved.

Nyckelord: Oxides, Chemical synthesis, Neutron diffraction, Crystal structure, Magnetic properties, room-temperature, curie-temperature, magnetoresistance, sr2femoo6, ba



Denna post skapades 2010-02-23.
CPL Pubid: 114042

 

Läs direkt!


Länk till annan sajt (kan kräva inloggning)


Institutioner (Chalmers)

Institutionen för kemi- och bioteknik, Oorganisk miljökemi (2005-2014)

Ämnesområden

Övrig teknisk materialvetenskap

Chalmers infrastruktur