Preparation under oxygen pressures of new perovskites: (ALa)LiIrO6-δ (A = Ca, Sr, Ba)

D. Y. Jung; G. Demazeau; J. H. Choy

doi:10.1080/08957959608240465

Preparation under oxygen pressures of new perovskites: (ALa)LiIrO_6-δ (A = Ca, Sr, Ba)

D. Y. Jung
, G. Demazeau
, J. H. Choy

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

2 Scopus citations

Abstract

New Ir(VI) containing perovskite oxides, (ALa)LiIrO_6-δ (A = Ca,Sr,Ba) were synthesized in a belt-type reaction cell, where in situ generation of high oxygen pressure was made by the thermal decomposition of KClO₃. The crystal structure and their oxygen stoichiometry depend on the A cation species (Ca, Sr, Ba) in the same preparation conditions. The long range magnetic interaction was not observed in the stoichiometric (BaLa)LiIrO₆ by the magnetic susceptibility measurements. Complex paramagnetic behavior of SrLaLiIrO_5.82 and CaLaLiIrO_5.62 is attributed to the partial formation of pentavalent iridium (+ V) characterized by a T-ground term.

Original language	English
Pages (from-to)	121-125
Number of pages	5
Journal	High Pressure Research
Volume	15
Issue number	2
DOIs	https://doi.org/10.1080/08957959608240465
State	Published - 1996
Externally published	Yes

Keywords

High oxygen pressures
Iridium
Iridium(VI) oxides
Unusual oxidation states

Access to Document

10.1080/08957959608240465

Cite this

@article{f5314afefc404b3d9e001d6bb52b2202,

title = "Preparation under oxygen pressures of new perovskites: (ALa)LiIrO6-δ (A = Ca, Sr, Ba)",

abstract = "New Ir(VI) containing perovskite oxides, (ALa)LiIrO6-δ (A = Ca,Sr,Ba) were synthesized in a belt-type reaction cell, where in situ generation of high oxygen pressure was made by the thermal decomposition of KClO3. The crystal structure and their oxygen stoichiometry depend on the A cation species (Ca, Sr, Ba) in the same preparation conditions. The long range magnetic interaction was not observed in the stoichiometric (BaLa)LiIrO6 by the magnetic susceptibility measurements. Complex paramagnetic behavior of SrLaLiIrO5.82 and CaLaLiIrO5.62 is attributed to the partial formation of pentavalent iridium (+ V) characterized by a T-ground term.",

keywords = "High oxygen pressures, Iridium, Iridium(VI) oxides, Unusual oxidation states",

author = "Jung, \{D. Y.\} and G. Demazeau and Choy, \{J. H.\}",

year = "1996",

doi = "10.1080/08957959608240465",

language = "English",

volume = "15",

pages = "121--125",

journal = "High Pressure Research",

issn = "0895-7959",

publisher = "Taylor and Francis Ltd.",

number = "2",

}

TY - JOUR

T1 - Preparation under oxygen pressures of new perovskites

T2 - (ALa)LiIrO6-δ (A = Ca, Sr, Ba)

AU - Jung, D. Y.

AU - Demazeau, G.

AU - Choy, J. H.

PY - 1996

Y1 - 1996

N2 - New Ir(VI) containing perovskite oxides, (ALa)LiIrO6-δ (A = Ca,Sr,Ba) were synthesized in a belt-type reaction cell, where in situ generation of high oxygen pressure was made by the thermal decomposition of KClO3. The crystal structure and their oxygen stoichiometry depend on the A cation species (Ca, Sr, Ba) in the same preparation conditions. The long range magnetic interaction was not observed in the stoichiometric (BaLa)LiIrO6 by the magnetic susceptibility measurements. Complex paramagnetic behavior of SrLaLiIrO5.82 and CaLaLiIrO5.62 is attributed to the partial formation of pentavalent iridium (+ V) characterized by a T-ground term.

AB - New Ir(VI) containing perovskite oxides, (ALa)LiIrO6-δ (A = Ca,Sr,Ba) were synthesized in a belt-type reaction cell, where in situ generation of high oxygen pressure was made by the thermal decomposition of KClO3. The crystal structure and their oxygen stoichiometry depend on the A cation species (Ca, Sr, Ba) in the same preparation conditions. The long range magnetic interaction was not observed in the stoichiometric (BaLa)LiIrO6 by the magnetic susceptibility measurements. Complex paramagnetic behavior of SrLaLiIrO5.82 and CaLaLiIrO5.62 is attributed to the partial formation of pentavalent iridium (+ V) characterized by a T-ground term.

KW - High oxygen pressures

KW - Iridium

KW - Iridium(VI) oxides

KW - Unusual oxidation states

UR - https://www.scopus.com/pages/publications/0030370366

U2 - 10.1080/08957959608240465

DO - 10.1080/08957959608240465

M3 - Article

AN - SCOPUS:0030370366

SN - 0895-7959

VL - 15

SP - 121

EP - 125

JO - High Pressure Research

JF - High Pressure Research

IS - 2

ER -

Preparation under oxygen pressures of new perovskites: (ALa)LiIrO_6-δ (A = Ca, Sr, Ba)

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this