Finite-size effect on Néel temperature in antiferromagnetic nanoparticles

IR IR (HANDLE)

Bibliographic Information

Published
2005-07-28
Resource Type
journal article
Rights Information
  • Copyright © 2005 American Physical Society
Publisher
Published by the American Physical Society through the American Institute of Physics

Search this article

Description

Muon spin relaxation/rotation (µSR) and magnetic susceptibility measurements were carried out on antiferromagnetic nanoparticles of CuO. Nanoparticles with center size of around 5 nm were prepared by ball-milling from single crystals of CuO and investigated using µSR measurements. In the ~5 nm assembly, the TN was reduced drastically to ~30 K, compared with the bulk TN=229 K. A similar effect was observed in a system of 2 to 3 nm diameter nanorods, which was synthesized by a direct solution reaction method, where TN was suppressed further to 13 K. The present work reports direct evidence of a dramatic finite-size effect on the magnetic transition temperature in antiferromagnetic systems.

Journal

Details 詳細情報について

Report a problem

Back to top