Magnetic properties of crystalline La0.9Ca0.1MnO 3: Comparison of bulk and nanometer-sized samples

Evgeny Rosenberg, Grzegorz Jung, Mark Auslender, Gad Gorodetsky, I. Felner, E. Sominski, A. Gedanken, Ya M. Mukovskii

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

ac and dc magnetic measurements have been employed to probe and compare magnetic ordering in bulk and nanometer-sized La0.9 Ca0.1 MnO3 single crystals. About the same cationic content was determined in both types of the samples. However, the magnetic ground state of the bulk crystal is characterized by a complex mixture of antiferromagnetically and ferromagnetically ordered phases, while the ground state of the nanosample seems to be ferromagnetic and coexisting with the superparamagnetic state at T<240 K. The results are discussed in terms of the different randomness of indirect ferromagnetic exchange interactions mediated by the bound holes.

Original languageEnglish
Article number08Q305
JournalJournal of Applied Physics
Volume99
Issue number8
DOIs
StatePublished - 29 May 2006
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy

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