Crystal structure and magnetic properties of the LaCo{sub 0.5}Fe{sub 0.5}O{sub 3} perovskite

Journal Article · Sat Jul 15 04:00:00 EDT 2006 · Crystallography Reports

DOI:https://doi.org/10.1134/S1063774506040092· OSTI ID:21091464

Troyanchuk, I O; Dobryansky, V M ^[1]; Szymczak, R ^[2]; Tovar, M ^[3]

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1. National Academy of Sciences of Belarus, Joint Institute of Solid-State and Semiconductor Physics (Belarus)
2. Polish Academy of Sciences, Institute of Physics (Poland)
3. Hahn-Meitner Institute, Berlin Neutron Scattering Center (Germany)

The magnetic and crystal structures of the LaCo{sub 0.5}Fe{sub 0.5}O{sub 3} perovskite are investigated. It is established that the unit cell of this compound at room temperature is characterized by rhombohedral distortions. As the temperature decreases, the compound undergoes a structural phase transition from the rhombohedral phase to the orthorhombic phase in the temperature range 200-300 K. The LaCo{sub 0.5}Fe{sub 0.5}O{sub 3} perovskite has an antiferromagnetic structure with the G{sub z} spatial orientation of the antiferromagnetic vector. The magnetic properties of the LaCo{sub 0.5}Fe{sub 0.5}O{sub 3} perovskite are interpreted within a model according to which the ground state of Co{sup 3+} ions is a low-spin state and the existence of the weak ferromagnetic component is associated with the exchange interactions between the Fe{sup 3+} ions.

• OSTI ID: 21091464
• Journal Information: Crystallography Reports, Journal Name: Crystallography Reports Journal Issue: 4 Vol. 51; ISSN 1063-7745; ISSN CYSTE3
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANTIFERROMAGNETISM
COBALT COMPOUNDS
COBALT IONS
EXCHANGE INTERACTIONS
GROUND STATES
IRON COMPOUNDS
IRON IONS
LANTHANUM COMPOUNDS
MAGNETIC PROPERTIES
ORTHORHOMBIC LATTICES
OXIDES
PEROVSKITE
PHASE TRANSFORMATIONS
TEMPERATURE RANGE 0273-0400 K
VECTORS