Low-temperature magnetic behavior of the rare-earth cobaltites GdCoO3 and SmCoO3

The temperature and magnetic field dependences of the static magnetization of the polycrystalline rare-earth cobaltites GdCoO3 and SmCoO3 have been measured. It is shown that, below room temperature, the magnetization of both compounds derives primarily from the rare-earth ion paramagnetism. The GdC...

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Bibliographic Details
Published inPhysics of the solid state Vol. 49; no. 11; pp. 2126 - 2131
Main Authors Ivanova, N. B., Kazak, N. V., Michel, C. R., Balaev, A. D., Ovchinnikov, S. G.
Format Journal Article
LanguageEnglish
Published New York Springer Nature B.V 01.11.2007
Subjects
Gadolinium
Low temperature
Magnetic permeability
Magnetic properties
Magnetism
Magnetization
Metal ions
Paramagnetism
Rare earth elements
Room temperature
Shells (structural forms)
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Summary:The temperature and magnetic field dependences of the static magnetization of the polycrystalline rare-earth cobaltites GdCoO3 and SmCoO3 have been measured. It is shown that, below room temperature, the magnetization of both compounds derives primarily from the rare-earth ion paramagnetism. The GdCoO3 and SmCoO3 compounds have been found to differ substantially in magnetic behavior, which can be traced to differences in their electronic shell structures. The magnetic behavior of GdCoO3 is close to that of an array of free Gd3+ ions, whereas in SmCoO3 the deviation from the free-ion properties is very large because of the Sm3+ ground state being crystal-field split. Van Vleck magnetic susceptibility measurements of SmCoO3 suggest that the splitting is ∼10 K.
ISSN:1063-7834
1090-6460
DOI:10.1134/S1063783407110182