In:
Japanese Journal of Applied Physics, IOP Publishing, Vol. 55, No. 2S ( 2016-02-01), p. 02BD02-
Abstract:
Some practical applications of magnetic nanoparticles in theranostics systems require a preliminary study on magnetically-induced particle behavior with regard to the frequency and field strength-dependent magnetic susceptibility, measurable through a complex magnetic susceptometer. A wide measurement range, however, is favorable to provide comprehensive understanding in relaxation dynamics of magnetic nanoparticles, as well as their nonlinear magnetization. Therefore, we particularly designed a coil system, thus achieving measurability of complex magnetic susceptibility up to 1 MHz with field strength more than 10 Oe rms . Our design includes parallel-arranged multiturn-coils as an induction coil to minimize overall resistance without a significant decrease of coil inductance, thus improving current-to-field conversion efficiency with a minimized dimension. Additionally, a typical coil was inserted inside the induction coil to provide a spatially-controllable field-distribution, and a single-turn sheet-coil was used as a sensor to obtain minimum noise and improve sensitivity reaching a relatively-constant value regardless field strength and temperature.
Type of Medium:
Online Resource
ISSN:
0021-4922
,
1347-4065
DOI:
10.7567/JJAP.55.02BD02
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
2016
detail.hit.zdb_id:
218223-3
detail.hit.zdb_id:
797294-5
detail.hit.zdb_id:
2006801-3
detail.hit.zdb_id:
797295-7
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