Syntheses and magnetic properties of nanocrystalline CuCr2Se4

Alexey N. Rusnak, Dongsoo Kim, Shyam Parameswaran, Chitta Ranjan Patra, Viktor B. Trofimov, Riki Harpness, Aharon Gedanken, Yuriy S. Tver'yanovich

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Nanocrystalline powder of ferromagnetic spinel CuCr2Se4 is synthesized with an average particle size of about 20-50 nm. The nano-powder is characterized using transmission electron microscopy, X-ray diffraction and magnetic measurements. The Curie temperature of the nanocrystals exceeds the value obtained for usual bulk polycrystalline spinel sample. Exposure of the samples by laser radiation at wavelength of 1.5 μm under an external field leads to an increase in magnetization, that is caused by photo and thermo stimulated remagnetization of monodomain nanocrystals.

Original languageEnglish
Pages (from-to)2885-2891
Number of pages7
JournalJournal of Non-Crystalline Solids
Volume352
Issue number26-27
DOIs
StatePublished - 1 Aug 2006

Bibliographical note

Funding Information:
The research was supported by Russian Foundation for Basic Research Grant No. 04-03-33049.

Keywords

  • Chalcogenides
  • Laser-matter interactions
  • Magnetic properties
  • Nanocrystals
  • TEM/STEM
  • X-ray diffraction

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