CHARACTERIZATION OF SUPERCONDUCTING HG-BA-CA-CU-OXIDES - STRUCTURAL AND PHYSICAL ASPECTS

Authors
CANTONI M SCHILLING A NISSEN HU OTT HR
Citation
M. Cantoni et al., CHARACTERIZATION OF SUPERCONDUCTING HG-BA-CA-CU-OXIDES - STRUCTURAL AND PHYSICAL ASPECTS, Physica. C, Superconductivity, 215(1-2), 1993, pp. 11-18
Citations number
9
Categorie Soggetti
Physics, Applied
Journal title
Physica. C, Superconductivity → ACNP
ISSN journal
09214534
Volume
215
Issue
1-2
Year of publication
1993
Pages
11 - 18
Database
ISI
SICI code
0921-4534(1993)215:1-2<11:COSH-S>2.0.ZU;2-6
Abstract
Some of the recently discovered high-T(c) superconducting phases of Hg -Ba-Ca-Cu-oxides have been investigated and characterised by analytica l and high-resolution transmission electron microscopy. The highest me asured critical temperature T(c) of 133.5 K can be assigned to the Hg1 Ba2Ca2Cu3O8+x phase (Hg-1223). Besides Hg-1212 and Hg-1223 phases, dif ferent perfectly-ordered polytypes with large c-axes up to 19 nm consi sting of different stackings of Hg-1212 and Hg-1223 have been observed . The investigated oxide materials contain also several different stac king defects consisting of intercalated layers of the related Hg-1234 and Hg-1245 structures.