ISSN:
1572-9605
Schlagwort(e):
superconductivity
;
Hg-based cuprate
;
Hg-1212 (Hg,Mo)Sr2(Ca,R)Cu2O z
;
neutron diffraction
;
crystal structure
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Elektrotechnik, Elektronik, Nachrichtentechnik
,
Physik
Notizen:
Abstract Two series of Hg-based oxides (Hg0.7Mo0.3)Sr2(Ca1−x R x )Cu2O z (R = Nd and Pr, 0.2 ≤ x ≤ 0.7) have been synthesized. Electrical-resistivity measurements show that these compounds are superconductors with maximum onset T c of 107 and 102 K for Nd- and Pr-containing samples, respectively. The neutron powder diffraction experiments on both as-prepared and O2-annealed samples of R = Nd revealed that the O(3) site at the HgOδ sheets are fully occupied and shifted towards the Hg/Mo site to form Mo–O bonds.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1023/A:1007738528912
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