Nanometer size effect on structural and magnetic properties of La 0.2Ca1/5/2013MnO3

V. Markovich, D. Mogilyansky, A. Wisniewski, I. Fita, R. Puzniak, P. Iwanowski, X. D. Wu, K. Suzuki, S. Chen, G. Gorodetsky

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


Structural and magnetic properties of La0.2Ca 0.8MnO3 nanoparticles with average size of 15-37 nm, prepared by the glycine-nitrate method, have been studied. Synchrotron experiments performed in the temperature range of 80-300 K have shown that a structural transition from room temperature orthorhombic Pnma to monoclinic P21/m space group, associated with orbital ordering, occurs below 200 K in the studied particles. This transition observed for the largest particles of 37 nm is very close to that of bulk, as seen by similar temperature variation of lattice parameters and orthorhombic strain. The transition is highly suppressed for smaller 15 nm particles. Horizontal and vertical shifts of magnetic hysteresis loops (MShift and HEB), displayed in a field cooled process, indicate size dependent exchange bias effect. It is also shown that MShift and HEB, as well as the remanent magnetization Mr and coercive field HC at low temperatures, exhibit a non-monotonic size dependence for particles around 23 nm. These effects may be attributed to the changes in uncompensated spins at the surface, anisotropy or alternatively to a transition from a multi-domain to the single domain state.

Original languageEnglish
Pages (from-to)8607-8612
Number of pages6
JournalJournal of Nanoscience and Nanotechnology
Issue number11
StatePublished - 1 Nov 2012


  • Magnetization
  • Nanocrystalline manganites
  • Particle size
  • Spin-glass

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry (all)
  • Biomedical Engineering
  • Materials Science (all)
  • Condensed Matter Physics


Dive into the research topics of 'Nanometer size effect on structural and magnetic properties of La 0.2Ca1/5/2013MnO3'. Together they form a unique fingerprint.

Cite this