Effect of rare-earth ions on magnetic properties and spin excitations in manganites

A qualitative change of a character of Mn ion ordering was observed in RMnO 3 single crystals (R=Sm, Eu, Gd) with decreasing of the R-ion ionic radii (tolerance factor) from Sm to Gd. At low temperatures, a direct magnetic contribution of R ions results in a significant increasing of magnetization i...

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Bibliographic Details
Published inJournal of magnetism and magnetic materials Vol. 272; pp. 96 - 97
Main Authors Mukhin, A.A, Ivanov, V.Yu, Travkin, V.D, Prokhorov, A.S, Balbashov, A.M, Hemberger, J, Loidl, A
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.05.2004
Subjects
Antiferromagnetic resonance
Magnetic anisotropy
Magnetodipolar transition
Manganite
Rare-earth ion
76.50.+g
Manganite
Antiferromagnetic resonance
Rare-earth ion
Magnetic anisotropy
Magnetodipolar transition
75.50.Ee
75.30.−m
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Summary:A qualitative change of a character of Mn ion ordering was observed in RMnO 3 single crystals (R=Sm, Eu, Gd) with decreasing of the R-ion ionic radii (tolerance factor) from Sm to Gd. At low temperatures, a direct magnetic contribution of R ions results in a significant increasing of magnetization in GdMnO 3 and in appearance of a compensation point at 9 K in SmMnO 3. In the submillimeter transmission spectra we observed magnetic excitations in Sm and Gd subsystems in addition to the antiferromagnetic resonance (AFMR) modes in Mn subsystem.
ISSN:0304-8853
DOI:10.1016/j.jmmm.2003.11.041