$Hg_{2-x}M_{x}Ba_{2}Pr_{2}Cu_{2}O_{10-\delta}$ (M= Cu,Pr)"> $Hg_{2-x}M_{x}Ba_{2}Pr_{2}Cu_{2}O_{10-\delta}$ (M= Cu,Pr)"> A new cuprate with mercury bilayers : the "2222" oxide <tex>$Hg_{2-x}M_{x}Ba_{2}Pr_{2}Cu_{2}O_{10-\delta}$</tex> (M= Cu,Pr) - Institutional Repository University of Antwerp
Title
A new cuprate with mercury bilayers : the "2222" oxide <tex>$Hg_{2-x}M_{x}Ba_{2}Pr_{2}Cu_{2}O_{10-\delta}$</tex> (M= Cu,Pr) A new cuprate with mercury bilayers : the "2222" oxide <tex>$Hg_{2-x}M_{x}Ba_{2}Pr_{2}Cu_{2}O_{10-\delta}$</tex> (M= Cu,Pr)
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
London ,
Subject
Chemistry
Source (journal)
Journal of solid state chemistry. - London
Volume/pages
114(1995) :1 , p. 230-235
ISSN
0022-4596
ISI
A1995QA17000033
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
A ''2222'' cuprate with mercury bilayers (Hg1.5Cu0.2Pr0.3)Ba2Pr2Cu2O10-delta, has been synthesized for the first time. It crystallizes in the P4/nmm space group with a = 3.9072(1) Angstrom and c = 17.219(1) Angstrom. The powder XRD and HREM studies of this new cuprate show that its structure consists of an intergrowth of double pyramidal (oxygen-deficient perovskite) copper layers, with double fluorite-type layers and distorted triple rock salt layers (mercury bilayers). The structure of this phase can be deduced from that of the ''2212'' mercury cuprate (Hg1.5Cu0.2Pr0.3)Ba2PrCu2O8-delta by the introduction of one additional [PrO2]infinity fluorite layer. The regular stacking of the metallic layer and the uniform cationic distribution in the mercury bilayers are remarkable features of this cuprate. The stabilization of the mercury bilayers by praseodymium and the absence of superconductivity are discussed. (C) 1995 Academic Press, Inc.
E-info
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