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]

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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, Journal Name: Journal of Solid State Chemistry Journal Issue: 6 Vol. 184; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

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