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RESEARCH PRODUCT
Effect of cation disorder on the magnetic properties ofSr2Fe1−xGaxReO6(0<x<0.7)double perovskites
Martin PanthöferIrene BonnAlexandra JungClaudia FelserWolfgang TremelS. ReimanVadim Ksenofontovsubject
ParamagnetismCrystallographyMaterials scienceMössbauer effectCondensed matter physicsMössbauer spectroscopyX-ray crystallographyDiamagnetismCrystal structureCondensed Matter PhysicsElectronic Optical and Magnetic MaterialsPerovskite (structure)Solid solutiondescription
The effect of diamagnetic dilution of the Fe sublattice on the structural and magnetic properties of the double perovskite Sr{sub 2}Fe{sub 1-x}Ga{sub x}ReO{sub 6} (0 =}0.4 is detected by x-ray structural analysis accompanied by the observation of a magnetically ordered and a paramagnetic phase in the corresponding Moessbauer spectra. Below 20% Ga content, Ga statistically dilutes the -Fe-O-Re-O-Fe- double-exchange pathways. Phase separation begins at 20% Ga substitution; between 20% and 40% ofmore » Ga content, the paramagnetic Ga-based phase does not contain any Fe. The Fe-containing, paramagnetic cubic phases which can be detected by Moessbauer spectroscopy first appear for x=0.4.« less
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2007-05-09 | Physical Review B |