Properties of magnetic nanoparticles in the Brownian relaxation range for liquid phase immunoassays

Keiji Enpuku; T. Tanaka; T. Matsuda; F. Dang; Naoya Enomoto; J. Hojo; K. Yoshinaga; F. Ludwig; F. Ghaffari; E. Heim; M. Schilling

doi:10.1063/1.2775882

Properties of magnetic nanoparticles in the Brownian relaxation range for liquid phase immunoassays

Keiji Enpuku, T. Tanaka, T. Matsuda, F. Dang, Naoya Enomoto, J. Hojo, K. Yoshinaga, F. Ludwig, F. Ghaffari, E. Heim, M. Schilling

Research output: Contribution to journal › Article › peer-review

36 Citations (Scopus)

Abstract

Properties of magnetic nanoparticles in the Brownian relaxation region were studied. Using the magnetic nanoparticles that exhibit remanence, we measured the magnetic properties, such as static magnetization, magnetic relaxation, and alternating current susceptibility, in a solution. Comprehensive comparisons were made between the experimental results and the theoretical ones predicted from the Brownian relaxation. From the comparison, the distributions of the particle parameters, i.e., the magnetic moment and the relaxation time, were estimated. It was shown that all the magnetic properties can be well explained when we take into account the parameter distributions in the sample.

Original language	English
Article number	054901
Journal	Journal of Applied Physics
Volume	102
Issue number	5
DOIs	https://doi.org/10.1063/1.2775882
Publication status	Published - Sep 20 2007

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

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10.1063/1.2775882

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Properties of magnetic nanoparticles in the Brownian relaxation range for liquid phase immunoassays. / Enpuku, Keiji; Tanaka, T.; Matsuda, T.; Dang, F.; Enomoto, Naoya; Hojo, J.; Yoshinaga, K.; Ludwig, F.; Ghaffari, F.; Heim, E.; Schilling, M.

In: Journal of Applied Physics, Vol. 102, No. 5, 054901, 20.09.2007.

Research output: Contribution to journal › Article › peer-review

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AU - Hojo, J.

AU - Yoshinaga, K.

AU - Ludwig, F.

AU - Ghaffari, F.

AU - Heim, E.

AU - Schilling, M.

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