Dynamics and collective state of ordered magnetic nanoparticles in mesoporous systems

José M. Vargas, Abhishek Srivastava, Ezra Garza, Amin Yourdkhani, Gabriel Caruntu, Leonard Spinu

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


In this paper we present a study of superparamagnetic and superspin glass states of magnetic nanoparticles confined in mesoporous templates. Characterization utilizes dynamic magnetization techniques, ac susceptibility, and ferromagnetic resonance, in addition to dc magnetization curves. In order to differentiate between the intrinsic and collective properties, we considered three magnetic nanoparticles systems with comparable size, shape, and crystallinity but with different intrinsic magnetocrystalline anisotropy. Further, confinement effects were studied by considering three different geometries of nanoparticles. The effect of the geometrical confinement and intrinsic anisotropy of the nanoparticles are discussed based on known theoretical predictions.

Original languageEnglish
Article number094309
JournalJournal of Applied Physics
Issue number9
StatePublished - Nov 1 2012


Dive into the research topics of 'Dynamics and collective state of ordered magnetic nanoparticles in mesoporous systems'. Together they form a unique fingerprint.

Cite this