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Structural trends from a consistent set of single-crystal data ofRFeAsO(R=La, Ce, Pr, Nd, Sm, Gd, and Tb)

F. Nitsche, A. Jesche, E. Hieckmann, Th. Doert, M. Ruck
2010 Physical Review B  

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2010 pre-print arXiv:1008.0864v3 fatcat:d6ry53oyx5dpdmdojx3qoofst4

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2010 accepted
arXiv:1008.0864v4 fatcat:p5w7vxlvsrb3zj6fhtnifx4d2a
2010 pre-print
arXiv:1008.0864v2 fatcat:3thepamlbvan3debtjqdbtk774
2010 pre-print
arXiv:1008.0864v1 fatcat:g5i74ch7iratdlttrjfowayqxu
A new crystal growth technique for single-crystals of REFeAsO (RE = La, Ce, Pr, Nd, Sm, Gd, and Tb) using NaI/KI as flux is presented. Crystals with a size up to 300 μm were isolated for single-crystal X-ray diffraction measurements. Lattice parameters were determined by LeBail fits of X-ray powder data against LaB6 standard. A consistent set of structural data is obtained and interpreted in a hard-sphere model. Effective radii for the rare-earth metal atoms for REFeAsO are deduced. The
more » ... of the intra- and inter-plane distances of the arsenic atoms is identified as limiter of the phase formation, and its influence on Tc is discussed.
doi:10.1103/physrevb.82.134514 fatcat:ycwm5h4m5zabvdiajerlrzbrpa
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F. Nitsche, A. Jesche, E. Hieckmann, Th. Doert, M. Ruck. "Structural trends from a consistent set of single-crystal data ofRFeAsO(R=La, Ce, Pr, Nd, Sm, Gd, and Tb)." Physical Review B 82.13 (2010)