Investigations of the Pb2Sr2Y1-xEuxCu3O 8+δ system by 151Eu Mössbauer resonance and x-ray diffraction

J. Lindén*, M. Lippmaa, T. Karlemo, M. Karppinen, L. Niinistö

*Tämän työn vastaava kirjoittaja

Tutkimustuotos: LehtiartikkeliArtikkeliTieteellinenvertaisarvioitu

5 Sitaatiot (Scopus)

Abstrakti

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.

AlkuperäiskieliEnglanti
Sivut399-404
Sivumäärä6
JulkaisuSuperconductor Science and Technology
Vuosikerta9
Numero5
DOI - pysyväislinkit
TilaJulkaistu - toukokuuta 1996
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

Sormenjälki

Sukella tutkimusaiheisiin 'Investigations of the Pb<sub>2</sub>Sr<sub>2</sub>Y<sub>1-x</sub>Eu<sub>x</sub>Cu<sub>3</sub>O <sub>8+δ</sub> system by <sup>151</sup>Eu Mössbauer resonance and x-ray diffraction'. Ne muodostavat yhdessä ainutlaatuisen sormenjäljen.

Viittausmuodot