Crystal growth, structure and magnetic properties of the double perovskites Ln{sub 2}MgIrO{sub 6} (Ln=Pr, Nd, Sm-Gd)

Journal Article · Mon Feb 15 00:00:00 EST 2010 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2009.11.025· OSTI ID:21372506

Mugavero, III, Samuel J; Fox, Adam H; Smith, Mark D ^[1]

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1. Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208 (United States)

Single crystals of double-perovskite type lanthanide magnesium iridium oxides, Ln{sub 2}MgIrO{sub 6} (Ln=Pr, Nd, Sm-Gd) have been grown in a molten potassium hydroxide flux. The compounds crystallize in a distorted 1:1 rock salt lattice, space group P2{sub 1}/n, consisting of corner shared MO{sub 6} (M=Mg{sup 2+} and Ir{sup 4+}) octahedra, where the rare earth cations occupy the eight-fold coordination sites formed by the corner shared octahedra. Pr{sub 2}MgIrO{sub 6}, Nd{sub 2}MgIrO{sub 6}, Sm{sub 2}MgIrO{sub 6}, and Eu{sub 2}MgIrO{sub 6} order antiferromagnetically around 10-15 K. - Graphical abstract: A SEM image of a typical crystal of Ln{sub 2}MgIrO{sub 6}, which forms in the monoclinic double perovskite structure, is shown.

• OSTI ID: 21372506
• Journal Information: Journal of Solid State Chemistry, Vol. 183, Issue 2; Other Information: DOI: 10.1016/j.jssc.2009.11.025; PII: S0022-4596(09)00554-4; Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CRYSTAL GROWTH
IRIDIUM IONS
IRIDIUM OXIDES
MAGNESIUM IONS
MAGNETIC PROPERTIES
MONOCLINIC LATTICES
MONOCRYSTALS
PEROVSKITE
POTASSIUM HYDROXIDES
RARE EARTH COMPOUNDS
SCANNING ELECTRON MICROSCOPY
SPACE GROUPS
ALKALI METAL COMPOUNDS
CHALCOGENIDES
CHARGED PARTICLES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTALS
ELECTRON MICROSCOPY
HYDROGEN COMPOUNDS
HYDROXIDES
IONS
IRIDIUM COMPOUNDS
MICROSCOPY
MINERALS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PEROVSKITES
PHYSICAL PROPERTIES
POTASSIUM COMPOUNDS
REFRACTORY METAL COMPOUNDS
SYMMETRY GROUPS
TRANSITION ELEMENT COMPOUNDS