TY - JOUR
T1 - Crystal structure of new Pt-doped Fe pnictide superconductors
AU - Kawamata, Takayuki
AU - Iida, Takefumi
AU - Suzuki, Kazunori
AU - Satomi, Erika
AU - Kobayashi, Yoshiaki
AU - Itoh, Masayuki
AU - Sato, Masatoshi
PY - 2011/7/1
Y1 - 2011/7/1
N2 - Single crystals of the recently found superconducting system Ca-Fe-Pt-As have been prepared and used in X-ray Rietveld analyses, where we have identified two types of structure; SrZnBi2 type (type A; I4=mmm) and HfCuSi2 type (type B; P4=nmm). Both structures consist of Fe1-xPt xAs conducting layers with As and Ca atoms between them. The unit cell of the system of type A has two Fe1-xPtxAs layers, while that of type B has only one layer. The superconducting transition appears in both systems, even though the fraction of Pt atoms, which act as strong electron scatterers, is as large as ̃0.2.
AB - Single crystals of the recently found superconducting system Ca-Fe-Pt-As have been prepared and used in X-ray Rietveld analyses, where we have identified two types of structure; SrZnBi2 type (type A; I4=mmm) and HfCuSi2 type (type B; P4=nmm). Both structures consist of Fe1-xPt xAs conducting layers with As and Ca atoms between them. The unit cell of the system of type A has two Fe1-xPtxAs layers, while that of type B has only one layer. The superconducting transition appears in both systems, even though the fraction of Pt atoms, which act as strong electron scatterers, is as large as ̃0.2.
KW - Ca-Fe-Pt-As
KW - Fe pnictides
KW - Superconducting symmetry
KW - X-ray Rietveld analysis
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U2 - 10.1143/JPSJ.80.073710
DO - 10.1143/JPSJ.80.073710
M3 - Article
AN - SCOPUS:79960389520
VL - 80
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
SN - 0031-9015
IS - 7
M1 - 073710
ER -