New oxidation states and defect chemistry in the pyrochlore structure

Giles D. Blundred; Craig A. Bridges; Matthew J. Rosseinsky

doi:10.1002/anie.200453819

New oxidation states and defect chemistry in the pyrochlore structure

Giles D. Blundred, Craig A. Bridges, Matthew J. Rosseinsky

Research output: Contribution to journal › Article › peer-review

54 Scopus citations

Abstract

Titanium(III) pyrochlores with Ti^III centers at up to 90% of the B sites of the A₂B₂O₆O′ pyrochlore structure (see picture; blue: BO₆, green: A, red: O′), which is well-known for supporting high oxidation states at the octahedral B sites, were obtained by the low-temperature reduction of lanthanide pyrochlores Ln ₂Ti₂O₇ with CaH₂. This leads to significant rearrangement of the anion sublattice and introduces antisite disorder between the two distinct cation arrays.

Original language	English
Pages (from-to)	3562-3565
Number of pages	4
Journal	Angewandte Chemie - International Edition
Volume	43
Issue number	27
DOIs	https://doi.org/10.1002/anie.200453819
State	Published - Jul 5 2004
Externally published	Yes

Keywords

Lanthanides
Magnetic properties
Pyrochlore phases
Reduction
Titanium

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10.1002/anie.200453819

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@article{a42eb912e18c4ede8ed8923dd49ee516,

title = "New oxidation states and defect chemistry in the pyrochlore structure",

abstract = "Titanium(III) pyrochlores with TiIII centers at up to 90\% of the B sites of the A2B2O6O′ pyrochlore structure (see picture; blue: BO6, green: A, red: O′), which is well-known for supporting high oxidation states at the octahedral B sites, were obtained by the low-temperature reduction of lanthanide pyrochlores Ln 2Ti2O7 with CaH2. This leads to significant rearrangement of the anion sublattice and introduces antisite disorder between the two distinct cation arrays.",

keywords = "Lanthanides, Magnetic properties, Pyrochlore phases, Reduction, Titanium",

author = "Blundred, \{Giles D.\} and Bridges, \{Craig A.\} and Rosseinsky, \{Matthew J.\}",

year = "2004",

month = jul,

day = "5",

doi = "10.1002/anie.200453819",

language = "English",

volume = "43",

pages = "3562--3565",

journal = "Angewandte Chemie - International Edition",

issn = "1433-7851",

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TY - JOUR

T1 - New oxidation states and defect chemistry in the pyrochlore structure

AU - Blundred, Giles D.

AU - Bridges, Craig A.

AU - Rosseinsky, Matthew J.

PY - 2004/7/5

Y1 - 2004/7/5

N2 - Titanium(III) pyrochlores with TiIII centers at up to 90% of the B sites of the A2B2O6O′ pyrochlore structure (see picture; blue: BO6, green: A, red: O′), which is well-known for supporting high oxidation states at the octahedral B sites, were obtained by the low-temperature reduction of lanthanide pyrochlores Ln 2Ti2O7 with CaH2. This leads to significant rearrangement of the anion sublattice and introduces antisite disorder between the two distinct cation arrays.

AB - Titanium(III) pyrochlores with TiIII centers at up to 90% of the B sites of the A2B2O6O′ pyrochlore structure (see picture; blue: BO6, green: A, red: O′), which is well-known for supporting high oxidation states at the octahedral B sites, were obtained by the low-temperature reduction of lanthanide pyrochlores Ln 2Ti2O7 with CaH2. This leads to significant rearrangement of the anion sublattice and introduces antisite disorder between the two distinct cation arrays.

KW - Lanthanides

KW - Magnetic properties

KW - Pyrochlore phases

KW - Reduction

KW - Titanium

UR - https://www.scopus.com/pages/publications/4544383189

U2 - 10.1002/anie.200453819

DO - 10.1002/anie.200453819

M3 - Article

AN - SCOPUS:4544383189

SN - 1433-7851

VL - 43

SP - 3562

EP - 3565

JO - Angewandte Chemie - International Edition

JF - Angewandte Chemie - International Edition

IS - 27

ER -

New oxidation states and defect chemistry in the pyrochlore structure

Abstract

Keywords

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