New pyrochlore phases in the ternary oxide Tl-Sb-O

Young S. Hong, Keon Kim

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

A new series of pyrochlore phases in the ternary oxide Tl-Sb-O have been prepared at 650 °C in air and characterised by XRD, FT-IR, EDX, XPS, and density measurements. The unit cell parameters were continuously decreased from 10.3073(1) Å for Tl/Sb = 1/4 to 10.28204(8) Å for Tl/Sb = 1/2 as the content of Tl3+ cations was increased. The Rietveld analysis shows that Tl+, Tl3+, Sb3+, and Sb5+ cations were positioned in the 32e, 16d, 96g, and 16c sites, respectively. The Tl3+ cations progressively incorporated into the 16d sites in the space group Fd3m, substituting for Sb3+ cations in the 96g sites. The FT-IR absorption band at around 570 cm-1, corresponding to the Sb3+-O' stretching vibrational mode, confirmed the existence of Sb3+ cations in the asymmetric 96g sites. These Tl-Sb-O phases are formulated with the composition (Tl+2/3-2δ)[Sb3+1-y Tl3+y]2/3Sb5+2 O6.33-δ (δ ∼ 0.5) and exhibit unique structural features with three types of A/A' cations in the 16d, 32e, and 96g sites.

Original languageEnglish
Pages (from-to)1533-1536
Number of pages4
JournalJournal of Materials Chemistry
Volume11
Issue number5
DOIs
Publication statusPublished - 2001 Jan 1

Fingerprint

Oxides
Cations
Positive ions
cations
oxides
Rietveld analysis
Stretching
pyrochlore
Absorption spectra
Energy dispersive spectroscopy
vibration mode
X ray photoelectron spectroscopy
absorption spectra
air
Air
cells
Chemical analysis
ganhuangenin

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Materials Science(all)
  • Materials Chemistry

Cite this

New pyrochlore phases in the ternary oxide Tl-Sb-O. / Hong, Young S.; Kim, Keon.

In: Journal of Materials Chemistry, Vol. 11, No. 5, 01.01.2001, p. 1533-1536.

Research output: Contribution to journalArticle

Hong, Young S. ; Kim, Keon. / New pyrochlore phases in the ternary oxide Tl-Sb-O. In: Journal of Materials Chemistry. 2001 ; Vol. 11, No. 5. pp. 1533-1536.
@article{bdeabaecd8194147abd8580c2a27339b,
title = "New pyrochlore phases in the ternary oxide Tl-Sb-O",
abstract = "A new series of pyrochlore phases in the ternary oxide Tl-Sb-O have been prepared at 650 °C in air and characterised by XRD, FT-IR, EDX, XPS, and density measurements. The unit cell parameters were continuously decreased from 10.3073(1) {\AA} for Tl/Sb = 1/4 to 10.28204(8) {\AA} for Tl/Sb = 1/2 as the content of Tl3+ cations was increased. The Rietveld analysis shows that Tl+, Tl3+, Sb3+, and Sb5+ cations were positioned in the 32e, 16d, 96g, and 16c sites, respectively. The Tl3+ cations progressively incorporated into the 16d sites in the space group Fd3m, substituting for Sb3+ cations in the 96g sites. The FT-IR absorption band at around 570 cm-1, corresponding to the Sb3+-O' stretching vibrational mode, confirmed the existence of Sb3+ cations in the asymmetric 96g sites. These Tl-Sb-O phases are formulated with the composition (Tl+2/3-2δ)[Sb3+1-y Tl3+y]2/3Sb5+2 O6.33-δ (δ ∼ 0.5) and exhibit unique structural features with three types of A/A' cations in the 16d, 32e, and 96g sites.",
author = "Hong, {Young S.} and Keon Kim",
year = "2001",
month = "1",
day = "1",
doi = "10.1039/b008518i",
language = "English",
volume = "11",
pages = "1533--1536",
journal = "Journal of Materials Chemistry",
issn = "0959-9428",
publisher = "Royal Society of Chemistry",
number = "5",

}

TY - JOUR

T1 - New pyrochlore phases in the ternary oxide Tl-Sb-O

AU - Hong, Young S.

AU - Kim, Keon

PY - 2001/1/1

Y1 - 2001/1/1

N2 - A new series of pyrochlore phases in the ternary oxide Tl-Sb-O have been prepared at 650 °C in air and characterised by XRD, FT-IR, EDX, XPS, and density measurements. The unit cell parameters were continuously decreased from 10.3073(1) Å for Tl/Sb = 1/4 to 10.28204(8) Å for Tl/Sb = 1/2 as the content of Tl3+ cations was increased. The Rietveld analysis shows that Tl+, Tl3+, Sb3+, and Sb5+ cations were positioned in the 32e, 16d, 96g, and 16c sites, respectively. The Tl3+ cations progressively incorporated into the 16d sites in the space group Fd3m, substituting for Sb3+ cations in the 96g sites. The FT-IR absorption band at around 570 cm-1, corresponding to the Sb3+-O' stretching vibrational mode, confirmed the existence of Sb3+ cations in the asymmetric 96g sites. These Tl-Sb-O phases are formulated with the composition (Tl+2/3-2δ)[Sb3+1-y Tl3+y]2/3Sb5+2 O6.33-δ (δ ∼ 0.5) and exhibit unique structural features with three types of A/A' cations in the 16d, 32e, and 96g sites.

AB - A new series of pyrochlore phases in the ternary oxide Tl-Sb-O have been prepared at 650 °C in air and characterised by XRD, FT-IR, EDX, XPS, and density measurements. The unit cell parameters were continuously decreased from 10.3073(1) Å for Tl/Sb = 1/4 to 10.28204(8) Å for Tl/Sb = 1/2 as the content of Tl3+ cations was increased. The Rietveld analysis shows that Tl+, Tl3+, Sb3+, and Sb5+ cations were positioned in the 32e, 16d, 96g, and 16c sites, respectively. The Tl3+ cations progressively incorporated into the 16d sites in the space group Fd3m, substituting for Sb3+ cations in the 96g sites. The FT-IR absorption band at around 570 cm-1, corresponding to the Sb3+-O' stretching vibrational mode, confirmed the existence of Sb3+ cations in the asymmetric 96g sites. These Tl-Sb-O phases are formulated with the composition (Tl+2/3-2δ)[Sb3+1-y Tl3+y]2/3Sb5+2 O6.33-δ (δ ∼ 0.5) and exhibit unique structural features with three types of A/A' cations in the 16d, 32e, and 96g sites.

UR - http://www.scopus.com/inward/record.url?scp=0035005039&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035005039&partnerID=8YFLogxK

U2 - 10.1039/b008518i

DO - 10.1039/b008518i

M3 - Article

AN - SCOPUS:0035005039

VL - 11

SP - 1533

EP - 1536

JO - Journal of Materials Chemistry

JF - Journal of Materials Chemistry

SN - 0959-9428

IS - 5

ER -