Anomalous magnetism in noble metal (nano)particles

Autor: Stephen J. Picken, Lian Zhang, Ger J. M. Koper, Kowlgi Krishna Narayan Kumar
Rok vydání: 2012
Předmět:
Zdroj: Colloids and Surfaces A: Physicochemical and Engineering Aspects. 413:248-251
ISSN: 0927-7757
DOI: 10.1016/j.colsurfa.2012.01.023
Popis: In a previous article published in Langmuir 27 (2011) 7783–7787 , we reported on a novel synthesis route to make magnetic noble metal nanoparticles and nanoparticle clusters. In this article we demonstrate an enhanced method of recovering the magnetic particles after synthesis and give an insight into the temperature dependence of their magnetization. Based on our findings, we conclude that the magnetism induced by our method has a dominant contribution from the surface instead of the bulk as is common for classical magnetism.
Databáze: OpenAIRE