Magnetic and structural transitions in layered iron arsenide systems: AFe2As2 versus RFeAsO
By C. Krellner, N. Caroca-Canales, A. Jesche, H. Rosner, A. Ormeci, C. Geibel. 2008
134 citations recorded by the source corpus.
Resistivity, specific-heat, and magnetic-susceptibility measurements performed on ${\text{SrFe}}_{2}{\text{As}}_{2}$ samples evidence a behavior very similar to that observed in LaFeAsO and ${\text{BaFe}}_{2}{\text{As}}_{2}$, with the difference being that the formation of the spin-density wave and the lattice deformation occur in a pronounced first-order transition at ${T}_{0}=205\text{ }\text{K}$. Comparing further data evidences that the Fe magnetism is stronger in ${\text{SrFe}}_{2}{\text{As}}_{2}$ and in ${\text{EuFe}}_{2}{\text{As}}_{2}$ than in the other layered FeAs systems investigated up to now. Full potential local-density approximation band-structure calculations confirm the large similarity between the compounds, especially for the relevant low energy $\text{Fe}\text{ }3d$ states. The relation between structural details and magnetic order is analyzed.
Subfields: Accounting, Condensed Matter Physics, Electronic, Optical and Magnetic Materials
View Paper: https://www.semanticscholar.org/paper/4ef88116f4db3611349ac7f66b5fb91402d5560f
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In Accounting
In Condensed Matter Physics
In Electronic, Optical and Magnetic Materials
Citations in the corpus
- Superconductivity in iron compounds (2011, background): “Values for S at TSDW for BaFe2As2 (Ba0:8K0:2Fe2As2), SrFe2As2, EuFe2As2, and Fe1:1Te (obtained by analyzing the published specific heat data) are respectively 0.85 ð0:18 J=moleKÞ (Kant et al., 2010), 1 J=moleK (Krellner et al., 2008), 1:5 J=moleK (Jeevan et al., 2008a), and 2:4 J=moleK (Westrum, Cho”