1988
DOI: 10.1088/0022-3727/21/6/031
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On the analysis of complex susceptibility data of ferrofluids

Abstract: An alternative to the Cole-Cole method of analysing the distribution of relaxation times in ferrofluids together with some results for two colloidal suspensions of magnetite are reported.

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Cited by 12 publications
(6 citation statements)
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“…Roll over was observed only in the scattering in the parallel direction. The scattering data, however, do not preclude the presence of much larger aggregates, which have been observed by dynamic light scattering (Caroline, D., private communication), a.c. susceptibility measurements (27), optical microscopy, and sedimentation studies (Charles, S. W., unpublished results) all of which indicate that the ferrofluid contains aggregates with dimensions 500 A. It is not known definitively why the ferrofluid particles aggregate.…”
Section: Discussionmentioning
confidence: 99%
“…Roll over was observed only in the scattering in the parallel direction. The scattering data, however, do not preclude the presence of much larger aggregates, which have been observed by dynamic light scattering (Caroline, D., private communication), a.c. susceptibility measurements (27), optical microscopy, and sedimentation studies (Charles, S. W., unpublished results) all of which indicate that the ferrofluid contains aggregates with dimensions 500 A. It is not known definitively why the ferrofluid particles aggregate.…”
Section: Discussionmentioning
confidence: 99%
“…In the work, the spectrum of relaxation times is determined, and the specific mechanism of relaxation of the magnetic moment of nanoparticles is determined. In their work 517 , Fannin, Scaife and Charles describe a method similar in essence to the data analysis of magnetic frequency dependences of susceptibility using the Debye model modified by Froehlich. In 518 , the results of an experimental study of a magnetic colloid containing both Brownian and Neel particles are presented.…”
Section: Magnetic Colloid Particle; 2polar Group Of the Surfactant Mo...mentioning
confidence: 99%
“…Одним из параметров, исследование которого позволяет провести анализ проявления этих процессов, является магнитная восприимчивость. Поэтому исследо-вание ее функциональных зависимостей неоднократно предпринималось многими авторами [2][3][4][5][6][7][8][9]. Одним из интересных результатов в этой области является экс-периментально обнаруженный максимум температурной зависимости восприимчивости, о котором, по-видимому, впервые сообщалось в работах [2,3] и впоследствии неоднократно исследовался в ряде работ [4][5][6]10].…”
Section: Introductionunclassified