View : 11 Download: 0

Heterostructured Bi-Based Cuprate High-Tc Superconductors with Unusually Coordinated Metal Halides

Title
Heterostructured Bi-Based Cuprate High-Tc Superconductors with Unusually Coordinated Metal Halides
Authors
Choy J.-H.Kim Y.-I.Hwang S.-J.Yang I.-S.
Ewha Authors
양인상
SCOPUS Author ID
양인상scopus
Issue Date
1999
Journal Title
Journal of Solid State Chemistry
ISSN
0022-4596JCR Link
Citation
vol. 147, no. 1, pp. 328 - 335
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
Attempts have been made to prepare various high-Tc superconducting intercalation compounds, M-X-Bi2Sr2Can-1CunO 2n+4+δ (M=metal; X=halogen; n=1, 2, and 3), with the synthetic strategy of hard-soft-acid-base interaction. The chimie douce route such as vapor transport and ionic diffusion is found to be effective in intercalating soft Lewis acidic guest species (I- 3, AgxIx-w w, HgIδ- 2, HgBrδ- 2, and AuIδ- 3) into the Lewis basic Bi2Sr2Can-1CunO 2n+4+δ lattice. According to the X-ray diffraction and magnetic property measurements on these intercalates, it becomes clear that the basal increment upon intercalation (3.25-7.35 Å) is governed by the interlayer geometry of the intercalant, while the accompanying Tc change depends on the charge transfer between host and guest. The extended X-ray absorption fine structure and Raman studies reveal that mercuric halides are intercalated as linear molecules as in vapor state, while silver iodide forms a two-dimensionally extended ionic-conducting channel. In the case of new gold iodide intercalate, unique trigonal planar AuI3 species is identified as the first example of an isolated gold iodide molecule. © 1999 Academic Press.
DOI
10.1006/jssc.1999.8301
Appears in Collections:
자연과학대학 > 물리학전공 > Journal papers
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE