6 papers
{Rearrangement of the antiferromagnetic ordering at high magnetic fields in SmFeAsO and SmFeAsOF single crystals
S. Weyeneth, P. J. W. Moll, R. Puzniak +11
The low-temperature antiferromagnetic state of the Sm-ions in both nonsuperconducting SmFeAsO and superconducting SmFeAsOF single crystals was studied by magnetic t…
Single crystals of LnFeAsO1-xFx (Ln=La, Pr, Nd, Sm, Gd) and Ba1-xRbxFe2As2: growth, structure and superconducting properties
J. Karpinski, N. D. Zhigadlo, S. Katrych +12
A review of our investigations on single crystals of LnFeAsO1-xFx (Ln=La, Pr, Nd, Sm, Gd) and Ba1-xRbxFe2As2 is presented. A high pressure technique has been applied for the growth…
Oxygen Isotope Effect of the Plane-Copper NQR Frequency in YBa_2Cu_4O_8
M. Mali, J. Roos, H. Keller +2
We report on high-precision measurements of the temperature dependence of the plane-^63Cu NQR line frequency nu_Q(Cu2) and the linewidth in normal and superconducting ^16O and ^18O…
^25Mg NMR study of the MgB_2 superconductor
M. Mali, J. Roos, A. Shengelaya +2
^25Mg NMR spectra and nuclear spin-lattice relaxation time, T_1, have been measured in polycrystalline ^25MgB_2 with a superconducting transition temperature T_c = 39.0 K in zero m…
Magnetic Properties of RuSr2RECu2O8 (RE=Gd, Eu) and Ru1-xSr2GdCu2+xO8-y Superconductors
P. W. Klamut, B. Dabrowski, S. M. Mini +11
Synthesis in 1% oxygen at 930C leads to non-superconducting RuSr2GdCu2O8 in which superconductivity subsequently can be induced with oxygen annealings without observable stoichiome…
Electrical transport in the ferromagnetic state of manganites: Small-polaron metallic conduction at low temperatures
G. M. Zhao, V. Smolyaninova, W. Prellier +1
We report measurements of the resistivity in the ferromagnetic state of epitaxial thin films of La_{1-x}Ca_{x}MnO_{3} and the low temperature specific heat of a polycrystalline La_…