Magnetic ordering of divalent europium in double perovskites Eu{sub 2}LnTaO{sub 6} (Ln=rare earths)

Journal Article · Wed Jun 15 00:00:00 EDT 2011 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2011.04.017· OSTI ID:21580104

Misawa, Yoshitaka; Doi, Yoshihiro ^[1]; Hinatsu, Yukio ^[1]

---

1. Division of Chemistry, Hokkaido University, Sapporo 060-0810 (Japan)

Structures and magnetic properties of double perovskite-type oxides Eu{sub 2}LnTaO{sub 6} (Ln=Eu, Dy-Lu) were investigated. These compounds adopt a distorted double perovskite structure with space group P2{sub 1}/n. Magnetic susceptibility, specific heat, and {sup 151}Eu Moessbauer spectrum measurements show that the Eu{sup 2+} ions at the 12-coordinate sites of the perovskite structure are antiferromagnetically ordered at {approx}4 K, and that Ln{sup 3+} ions at the 6-coordinate site are in the paramagnetic state down to 1.8 K. - Graphical abstract: Magnetic properties of double perovskite-type oxides Eu{sub 2}LnTaO{sub 6} (Ln=Eu, Dy-Lu) were investigated. Magnetic susceptibility, specific heat, and {sup 151}Eu Moessbauer spectrum measurements show that the Eu{sup 2+} ions at the 12-coordinate sites of the perovskite structure are antiferromagnetically ordered at {approx}4 K. Highlights: > Crystal structures of double perovskites Eu{sub 2}LnTaO{sub 6} (Ln=rare earth) were determined. > We found that these compounds show an antiferromagnetic ordering at {approx}4 K. > The magnetic ordering is due to the interactions of Eu{sup 2+} ions. > It was elucidated by specific heat and {sup 151}Eu Moessbauer spectrum measurements.

• OSTI ID: 21580104
• Journal Information: Journal of Solid State Chemistry, Vol. 184, Issue 6; Other Information: DOI: 10.1016/j.jssc.2011.04.017; PII: S0022-4596(11)00185-X; Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ANTIFERROMAGNETISM
COORDINATES
EUROPIUM
EUROPIUM 151
EUROPIUM IONS
INTERACTIONS
MAGNETIC SUSCEPTIBILITY
MAGNETIZATION
MOESSBAUER EFFECT
MONOCLINIC LATTICES
OXIDES
PARAMAGNETISM
PEROVSKITE
SPACE GROUPS
SPECIFIC HEAT
CHALCOGENIDES
CHARGED PARTICLES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
ELEMENTS
EUROPIUM ISOTOPES
INTERMEDIATE MASS NUCLEI
IONS
ISOTOPES
MAGNETIC PROPERTIES
MAGNETISM
METALS
MINERALS
NUCLEI
ODD-EVEN NUCLEI
OXIDE MINERALS
OXYGEN COMPOUNDS
PEROVSKITES
PHYSICAL PROPERTIES
RARE EARTH NUCLEI
RARE EARTHS
STABLE ISOTOPES
SYMMETRY GROUPS
THERMODYNAMIC PROPERTIES