Crystal growth of a novel oxygen-deficient layered perovskite: Ba7Li3Ru4O20

Stitzer, Katharine E.; Gemmill, William R.; Smith, Mark D.; Loye, Hans-Conrad zur

doi:10.1016/s0022-4596(03)00112-9

Cited by 19 publications

(7 citation statements)

References 33 publications

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“…The Ir-O distances in Ln 2 LiIrO 6 (Ln ¼ La, Pr, Nd, Sm, Eu) are consistent with the observed values found in other Ir(V) oxides [1,10], thus supporting the pentavalent state of iridium in these oxides. The Li-O distances range from 2.035(5) Å in Nd 2 LiIrO 6 to 2.152(10) Å in Eu 2 LiIrO 6 and are typical for Li + in an octahedral oxide environment [21].…”

Section: Crystal Structurementioning

confidence: 99%

The crystal growth and magnetic properties of Ln2LiIrO6 (Ln=La, Pr, Nd, Sm, Eu)

Mugavero

Smith

Loye

2005

Journal of Solid State Chemistry

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Section: Crystal Structurementioning

confidence: 99%

The crystal growth and magnetic properties of Ln2LiIrO6 (Ln=La, Pr, Nd, Sm, Eu)

Mugavero

Smith

Loye

2005

Journal of Solid State Chemistry

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“…The novelty of our approach lies in its simplicity: only two inorganic precursors are used, in stoichoimetric proportions, with no additional mineralizers or pH modifiers (unlike many other hydrothermal crystallizations), and this allows reproducible formation of highly crystalline phases. Furthermore the temperatures used are significantly lower than those used in other “soft chemical” synthesis of ruthenates; in molten hydroxide or carbonate fluxes, for example, temperatures above 600 °C are reported to bring about crystallization 21. 22…”

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confidence: 99%

Ruthenium(V) Oxides from Low‐Temperature Hydrothermal Synthesis

et al. 2014

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hydrothermal synthesis of the ruthenium oxides Ca 1.5 Ru 2 O 7 , SrRu 2 O 6 , and Ba 2 Ru 3 O 9 (OH) is reported. Ca 1.5 Ru 2 O 7 is a defective pyrochlore containing Ru V/VI ; SrRu 2 O 6 is a layered Ru V oxide with a PbSb 2 O 6 structure, whilst Ba 2 Ru 3 O 9 (OH) has a previously unreported structure type with orthorhombic symmetry solved from synchrotron X-ray and neutron powder diffraction. SrRu 2 O 6 exhibits unusually high-temperature magnetic order, with antiferromagnetism persisting to at least 500 K, and refinement using room temperature neutron powder diffraction data provides the magnetic structure. All three ruthenates are metastable and readily collapse to mixtures of other oxides upon heating in air at temperatures around 300-500 8C, suggesting they would be difficult, if not impossible, to isolate under conventional high-temperature solid-state synthesis conditions.

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“…The use of molten fluxes in the formation of single crystals has been investigated extensively . Our group has had considerable success incorporating alkali and alkaline-earth metals, first- and second-row transition-metal elements, and lanthanides into a range of metal oxide structures. − This synthetic versatility is due, in large part, to the use of carbonate and hydroxide fluxes. Of particular interest to us is the ability of carbonates and “wet” hydroxide fluxes to dissolve platinum group metals and lanthanides. ,− We have recently reported on the use of a K 2 CO 3 flux in the growth of RERhO 3 (RE = La, Pr, Nd, Sm, Eu, Tb) single crystals .…”

Section: Introductionmentioning

confidence: 99%