The structure and magnetic properties of La{sub 2}MIrO{sub 6} with M = Mg, Co, Ni, and Zn

Journal Article · Sat Apr 01 00:00:00 EST 1995 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1006/jssc.1995.1202· OSTI ID:70196

Currie, R C; Vente, J F; Ijdo, D J.W. ^[1]; Frikkee, E ^[2]

---

1. Leiden Univ (Netherlands)
2. Netherlands Energy Research Foundation ECN, Petten (Netherlands)

The structure of the compounds La{sub 2}MIrO{sub 6} is a monoclinic deformation of the perovskite-like GdFeO{sub 3}-type (space group P2{sub 1}/n) with complete ordering between iridium and M for M = Mg, Co, Ni, and Zn. These compounds are isomorphous with La{sub 2}NiRuO{sub 6}. The unit cell dimensions compare to those of the cubic perovskite as a{sub m} {approx} b{sub m} {approx} a{sub c}{radical}2, c{sub m} {approx} 2a{sub c}, {beta} {approx} 90{degrees}. The structure has been determined by Rietveld refinement on X-ray and neutron powder diffraction data. The magnetic susceptibility measurements show magnetic ordering for the compounds with M = Co and Ni at 130 and 110 K respectively.

• OSTI ID: 70196
• Journal Information: Journal of Solid State Chemistry, Vol. 116, Issue 1; Other Information: PBD: Apr 1995
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
LANTHANUM OXIDES
CRYSTAL STRUCTURE
MAGNETIC SUSCEPTIBILITY
MAGNESIUM OXIDES
COBALT OXIDES
NICKEL OXIDES
ZINC OXIDES
IRIDIUM OXIDES
MONOCLINIC LATTICES
X-RAY DIFFRACTION