(HG,PB) SR-2(LN,CE)(2)CU2OZ(LN=GD, ND), A NEW FAMILY OF MERCURY-LEAD-BASED SUPERCONDUCTING CUPRATES

Authors
TANG KB XU XW QIAN YT CHEN ZY YANG L ZHANG YH
Citation
Kb. Tang et al., (HG,PB) SR-2(LN,CE)(2)CU2OZ(LN=GD, ND), A NEW FAMILY OF MERCURY-LEAD-BASED SUPERCONDUCTING CUPRATES, Physica. C, Superconductivity, 249(1-2), 1995, pp. 1-4
Citations number
15
Categorie Soggetti
Physics, Applied
Journal title
Physica. C, Superconductivity → ACNP
ISSN journal
09214534
Volume
249
Issue
1-2
Year of publication
1995
Pages
1 - 4
Database
ISI
SICI code
0921-4534(1995)249:1-2<1:(SNANF>2.0.ZU;2-4
Abstract
A new series of mercury-lead-based layered cuprates (Hg,Pb)Sr-2(Ln,Ce) (2)Cu2Oz (Ln = Gd, Nd, Eu, Sm) has been synthesized using precursors S r-2(Ln,Ce)(2)Cu2Oz prepared by the citrate gel process. X-ray diffract ion indicates that the sample with nominal composition (Hg0.5Pb0.5)Sr- 2(Gd1.5Ce0.5)Cu2Oz has a tetragonal structure with lattice parameters a = 3.846, c = 29.418 Angstrom and a space group of I-4/mmm. Energy-di spersive X-ray spectrometry analysis confirms that the Hg ions are inc orporated into the structure. Resistance measurements show that the Ln = Gd sample is a superconductor with a T-c(onset) of 38 K.