X-ray absorption spectroscopic study of new high-Tc superconducting intercalation compound of (HgX2)0.5Bi2Sr2CaCu2Oy(X=Br,I)

Jin Ho Choy, Nam Gyu Park, Seong Ju Hwang, Sung Ho Hwang, Dong Hoon Kim

Research output: Contribution to journalConference article

Abstract

We have systematically performed x-ray absorption spectroscopic (XAS) studies on the new mercuric halide intercalated superconductors, (HgX 2) 0.5Bi 2Sr 2CaCu 2O y with X equals Br and I, in order to investigate the electronic and crystal structure of these compounds. The present Hg L III-edge EXAFS results indicate that the mercury is coordinated with two bromide or iodide ligands with bond length of 2.46 angstrom for the HgBr 2-intercalate and 2.65 angstrom for the HgI 2-one. This is the first example of linear molecular salt of HgX 2 stabilized in the solid lattice. According to the I L I- and Br K-edge x-ray absorption near edge structure (XANES) spectroscopic studies, a small amount of electron transfer from the intercalant HgX 2 to the host lattice could be observed upon intercalation, resulting in the negatively charged state of (HgX 2) δ. The Cu K-edge EXAFS analysis reveals that the bond distance of Cu-O axial is slightly shortened upon intercalation, reflecting the oxidation of (Cu-O) layer, which is well consistent with the I L I- and Br K-edge XANES results.

Original languageEnglish
Pages (from-to)636-641
Number of pages6
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume2696
Issue number2/-
Publication statusPublished - 1996 Dec 1
EventSpectroscopic Studies of Superconductors. Part 2 (of 2) - San Jose, CA, USA
Duration: 1996 Jan 291996 Feb 1

Fingerprint

Intercalation compounds
X ray absorption
intercalation
Absorption
Intercalation
X rays
x ray absorption
Electron Transfer
x rays
Mercury
Bond length
Crystal Structure
Iodides
Electronic Structure
Superconductor
Bromides
Salt
Oxidation
Superconducting materials
Electronic structure

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

@article{c2227139664841db86ca09a6deea4067,
title = "X-ray absorption spectroscopic study of new high-Tc superconducting intercalation compound of (HgX2)0.5Bi2Sr2CaCu2Oy(X=Br,I)",
abstract = "We have systematically performed x-ray absorption spectroscopic (XAS) studies on the new mercuric halide intercalated superconductors, (HgX 2) 0.5Bi 2Sr 2CaCu 2O y with X equals Br and I, in order to investigate the electronic and crystal structure of these compounds. The present Hg L III-edge EXAFS results indicate that the mercury is coordinated with two bromide or iodide ligands with bond length of 2.46 angstrom for the HgBr 2-intercalate and 2.65 angstrom for the HgI 2-one. This is the first example of linear molecular salt of HgX 2 stabilized in the solid lattice. According to the I L I- and Br K-edge x-ray absorption near edge structure (XANES) spectroscopic studies, a small amount of electron transfer from the intercalant HgX 2 to the host lattice could be observed upon intercalation, resulting in the negatively charged state of (HgX 2) δ. The Cu K-edge EXAFS analysis reveals that the bond distance of Cu-O axial is slightly shortened upon intercalation, reflecting the oxidation of (Cu-O) layer, which is well consistent with the I L I- and Br K-edge XANES results.",
author = "Choy, {Jin Ho} and Park, {Nam Gyu} and Hwang, {Seong Ju} and Hwang, {Sung Ho} and Kim, {Dong Hoon}",
year = "1996",
month = "12",
day = "1",
language = "English",
volume = "2696",
pages = "636--641",
journal = "Proceedings of SPIE - The International Society for Optical Engineering",
issn = "0277-786X",
publisher = "SPIE",
number = "2/-",

}

X-ray absorption spectroscopic study of new high-Tc superconducting intercalation compound of (HgX2)0.5Bi2Sr2CaCu2Oy(X=Br,I). / Choy, Jin Ho; Park, Nam Gyu; Hwang, Seong Ju; Hwang, Sung Ho; Kim, Dong Hoon.

In: Proceedings of SPIE - The International Society for Optical Engineering, Vol. 2696 , No. 2/-, 01.12.1996, p. 636-641.

Research output: Contribution to journalConference article

TY - JOUR

T1 - X-ray absorption spectroscopic study of new high-Tc superconducting intercalation compound of (HgX2)0.5Bi2Sr2CaCu2Oy(X=Br,I)

AU - Choy, Jin Ho

AU - Park, Nam Gyu

AU - Hwang, Seong Ju

AU - Hwang, Sung Ho

AU - Kim, Dong Hoon

PY - 1996/12/1

Y1 - 1996/12/1

N2 - We have systematically performed x-ray absorption spectroscopic (XAS) studies on the new mercuric halide intercalated superconductors, (HgX 2) 0.5Bi 2Sr 2CaCu 2O y with X equals Br and I, in order to investigate the electronic and crystal structure of these compounds. The present Hg L III-edge EXAFS results indicate that the mercury is coordinated with two bromide or iodide ligands with bond length of 2.46 angstrom for the HgBr 2-intercalate and 2.65 angstrom for the HgI 2-one. This is the first example of linear molecular salt of HgX 2 stabilized in the solid lattice. According to the I L I- and Br K-edge x-ray absorption near edge structure (XANES) spectroscopic studies, a small amount of electron transfer from the intercalant HgX 2 to the host lattice could be observed upon intercalation, resulting in the negatively charged state of (HgX 2) δ. The Cu K-edge EXAFS analysis reveals that the bond distance of Cu-O axial is slightly shortened upon intercalation, reflecting the oxidation of (Cu-O) layer, which is well consistent with the I L I- and Br K-edge XANES results.

AB - We have systematically performed x-ray absorption spectroscopic (XAS) studies on the new mercuric halide intercalated superconductors, (HgX 2) 0.5Bi 2Sr 2CaCu 2O y with X equals Br and I, in order to investigate the electronic and crystal structure of these compounds. The present Hg L III-edge EXAFS results indicate that the mercury is coordinated with two bromide or iodide ligands with bond length of 2.46 angstrom for the HgBr 2-intercalate and 2.65 angstrom for the HgI 2-one. This is the first example of linear molecular salt of HgX 2 stabilized in the solid lattice. According to the I L I- and Br K-edge x-ray absorption near edge structure (XANES) spectroscopic studies, a small amount of electron transfer from the intercalant HgX 2 to the host lattice could be observed upon intercalation, resulting in the negatively charged state of (HgX 2) δ. The Cu K-edge EXAFS analysis reveals that the bond distance of Cu-O axial is slightly shortened upon intercalation, reflecting the oxidation of (Cu-O) layer, which is well consistent with the I L I- and Br K-edge XANES results.

UR - http://www.scopus.com/inward/record.url?scp=0030392777&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0030392777&partnerID=8YFLogxK

M3 - Conference article

AN - SCOPUS:0030392777

VL - 2696

SP - 636

EP - 641

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

SN - 0277-786X

IS - 2/-

ER -