Size distribution of magnetic nanoparticles estimated from Browninan relaxation in a solution

Tsuyoshi Tanaka, Keiji Enpuku

Research output: Contribution to journalArticle


We measured complex magnetic susceptibility of magnetic nanoparticles in a solution. Analyzing the frequency dependence of the susceptibility with the so-called singular value decomposition (SVD) method, we obtained the size distribution of magnetic nanoparticles in the sample. It was shown that the frequency dependence of the susceptibility reconstructed from the estimated size distribution agrees well with the experimental result. It was also shown that the estimated size distribution reasonably agrees with that obtained from different measurement, i.e., optical dynamic light scattering (DLS). These agreements show the validity of the present method to evaluate the size distribution from magnetic the measurement.

Original languageEnglish
Pages (from-to)43-47
Number of pages5
JournalResearch Reports on Information Science and Electrical Engineering of Kyushu University
Issue number1
Publication statusPublished - Mar 1 2008


All Science Journal Classification (ASJC) codes

  • Computer Science(all)
  • Electrical and Electronic Engineering

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