Influence of Fe-substitution on the high-Tc superconductivity

Jing, J.; Bieg, J.; Engelmann, H.; Hsia, Yuanfu; Gonser, U.; Gütlich, Philipp; Jakobi, R.

doi:10.1016/0038-1098(88)90993-3

Cited by 31 publications

(2 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There were many reports [1][2][3][4][5] on the substitution of Fe for Cu in the Ba 2 YCu 3 O 6+d high-T c superconductor to investigate the behavior of the magnetic Fe elements in the high-T c superconductors. These reports show that the superconducting transition temperature T c decreases with increasing of substituted Fe content.…”

Section: Introductionmentioning

confidence: 99%

Structure phase transition in FeSr2YCu2O6+δ

Mochiku¹,

Hata²,

Iwase³

et al. 2006

Physica B: Condensed Matter

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Structure phase transition in FeSr2YCu2O6+δ

Mochiku¹,

Hata²,

Iwase³

et al. 2006

Physica B: Condensed Matter

View full text Add to dashboard Cite

“…There have been a number of reports [1][2][3][4][5] on the substitution of Fe for Cu in Ba 2 YCu 3 O 6þ system, which can be described by stacking of sheets along the c-axis with a sequence of (CuO ) o (BaO) c (CuO 2 ) o (Y) c (CuO 2 ) o (BaO) c according to a descriptive method proposed by Santoro et al, 6) where the subscripts o and c stand for whether the cation on the each slice is at the origin or at the center of the sheet. All these reports show that the superconducting transition temperature, T c , decreases with increasing the content of Fe regardless of the sample preparation conditions.…”

Section: Introductionmentioning

confidence: 99%

Crystal Structure of Magnetic Superconductor FeSr₂YCu₂O_6+δ

et al. 2002

View full text Add to dashboard Cite

The FeSr 2 YCu 2 O 6þ compound with a Ba 2 YCu 3 O 6þ -type structure exhibits superconductivity around 50 K, only when it is properly annealed in N 2 atmosphere and subsequently in O 2 atmosphere. The compound without N 2 -annealing, however, does not exhibit superconductivity. This compound consists of a sequence of alternating CuO 2 double sheets with nanometer-scale separation as those in high-T c superconductors, and FeO sheets similar to that in the SrFeO 3À magnetic compound. Neutron diffraction study shows that both N 2 -annealing and subsequent O 2 -annealing cause ordering of Cu and Fe, and that both O 2 -annealing and subsequent oxidization under high-O 2 pressure supply the charge. However, the charge was distributed not only to the CuO 2 sheet but also the FeO sheet. The bond valence sum calculation indicates that charges distributed to the FeO sheet more than to the CuO 2 sheet in the superconducting sample.

show abstract