New method for the reconstruction of the distribution of fine particle magnetic moments in a ferrofluid

被引：3

作者：

Berkov, DV ^{[1
]}

Daum, A

Görnert, P

Buske, N

Gansau, C

Mueller, J

Giersig, M

Neumann, W

Su, D

机构：

[1] INNOVENT EV, Jena, Germany

[2] Mediport Kardiotechn, Berlin, Germany

[3] Hahn Meitner Inst Kernforsch Berlin GmbH, D-1000 Berlin, Germany

[4] Humboldt Univ, Berlin, Germany

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1999年 / 35卷 / 05期

关键词：

ferrofluid; magnetic moment distribution; ill-posed problem; SVD-regularization;

D O I：

10.1109/20.800756

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We present a new method to reconstruct the distribution of magnetic moments rho(mu) of ferrofluid particles from the magnetization curve measured on a ferrofluid in the liquid state. The method employs the solution of the integral equation describing the magnetization of the fine particle system in an external field and requires net a priori assumptions concerning the shape of rho(mu). Reconstruction results for both the computer simulated magnetization curves and the experimental data obtained on Co-ferrofluids are presented. In the latter case comparison of the reconstructed distribution with rho(mu) calculated from the particle size distribution obtained via electron microscopy shows good quantiative agreement.

引用

页码：4064 / 4066

页数：3

共 6 条

[1]

Lawson C.L., 1974, SOLVING LEAST SQUARE

[2]

PAPIRER E, 1983, J COLLOID INTERF SCI, V94, P1

[3] FERROFLUID PARTICLE-SIZE DISTRIBUTIONS FROM MAGNETIZATION AND SMALL-ANGLE NEUTRON-SCATTERING DATA [J].