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 language | English |
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Article number | 08Q305 |
Journal | Journal of Applied Physics |
Volume | 99 |
Issue number | 8 |
DOIs | |
State | Published - 29 May 2006 |
Externally published | Yes |
ASJC Scopus subject areas
- General Physics and Astronomy