Journal
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume 346, Issue -, Pages 152-160Publisher
ELSEVIER
DOI: 10.1016/j.jmmm.2013.07.010
Keywords
Nanorod; Stoner-Wohlfarth-model; Ferrogel; Nanorheology; Nanoprobe
Funding
- Graduiertenforderung of the Universitat des Saarlandes
Ask authors/readers for more resources
Ni nanorods are dispersed into gelatine gels and used as nanoprobes to estimate the shear modulus of the surrounding gel matrix by magnetization measurements. The nanorods are synthesized via pulsed electrodeposition of Ni into porous alumina, released from the templates by dissolution of the oxide layer and after several processing steps dispersed into gelatine gels with an isotropic orientation-distribution. Magnetization measurements of the resulting gels show a significant influence of the gelatine concentration on their magnetic behavior. In particular, with decreasing gelatine concentration the measured coercivity is reduced indicating a mechanical rotation of the nanorods in the field direction. A theoretical model which relates the measured coercivity to the shear modulus of the surrounding gel matrix is introduced and applied to investigate the ageing process of gelatine gels with different gelatine concentrations at room temperature. (c) 2013 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available