TY - JOUR
T1 - Investigations of the Pb2Sr2Y1-xEuxCu3O8+δ system by 151Eu Mössbauer resonance and x-ray diffraction
AU - Lindén, J
AU - Lippmaa, M
AU - Karlemo, T
AU - Karppinen, M
AU - Niinistö, L
PY - 1996/5
Y1 - 1996/5
N2 - A series of non-superconducting Pb2Sr2Y1-xEUxCu3O 8+δ (Pb-2213) samples with x = 0, 0.25, 0.5, 0.75 and 1.00 were synthesized under a nitrogen atmosphere. Both as-synthesized and oxygen-annealed samples were studied. The phase purity, lattice parameters, and crystal structure were analysed by x-ray diffraction measurements. The behaviour of the crystallites in a magnetic field was studied by performing grain alignment experiments on some of the samples. Replacing Y with Eu increased the unit-cell volume and changed the preferred direction of the c axes in orienting experiments. The oxygen-loaded samples were tetragonal. The hyperfine interactions of the rare-earth site were monitored using 151Eu Mössbauer spectroscopy. The spectra obtained exhibited electric quadrupole interaction as expected. The asymmetry parameter (η) of the electric field gradient (efg) exhibited a strong dependence on x. For the as-synthesized x = 1.0 sample η was zero.
AB - A series of non-superconducting Pb2Sr2Y1-xEUxCu3O 8+δ (Pb-2213) samples with x = 0, 0.25, 0.5, 0.75 and 1.00 were synthesized under a nitrogen atmosphere. Both as-synthesized and oxygen-annealed samples were studied. The phase purity, lattice parameters, and crystal structure were analysed by x-ray diffraction measurements. The behaviour of the crystallites in a magnetic field was studied by performing grain alignment experiments on some of the samples. Replacing Y with Eu increased the unit-cell volume and changed the preferred direction of the c axes in orienting experiments. The oxygen-loaded samples were tetragonal. The hyperfine interactions of the rare-earth site were monitored using 151Eu Mössbauer spectroscopy. The spectra obtained exhibited electric quadrupole interaction as expected. The asymmetry parameter (η) of the electric field gradient (efg) exhibited a strong dependence on x. For the as-synthesized x = 1.0 sample η was zero.
UR - http://www.scopus.com/inward/record.url?scp=0030134365&partnerID=8YFLogxK
U2 - 10.1088/0953-2048/9/5/011
DO - 10.1088/0953-2048/9/5/011
M3 - Article
AN - SCOPUS:0030134365
SN - 0953-2048
VL - 9
SP - 399
EP - 404
JO - Superconductor Science and Technology
JF - Superconductor Science and Technology
IS - 5
ER -