Rheological Properties and Particle Behaviors of a Non-dilute Colloidal Dispersion Composed of Ferromagnetic Spherocylinder Particles Subjected to a Simple Shear Flow : Analysis by Means of Mean Field Approximation

Control of the orientational characteristics of disk-like hematite particles by a simple shear flow

“…The magneto-rheological effect is strongly dependent on a variety of factors such as particle shape, magnetic particle-particle and particle-field interactions (Satoh, 2001;Satoh, 2003a;Paulus et al, 2001;de Vicente et al, 2009;de Vicente et al, 2010;Piao et al, 2003;Choi et al, 2000;Bell et al, 2007). A suspension composed of hematite particles exhibit characteristic magneto-rheological properties completely different form those of ordinary ferromagnetic particles (Ozaki et al, 1988;Ozaki and Matijević, 1985;Varanda et al, 2001).…”

Brownian dynamics simulation of a dispersion composed of disk-like hematite particles regarding the orientational distribution and the magneto-rheological properties

“…Ordinary magnetic particles are ferromagnetic, as in the case of magnetite, and they are usually magnetized in the particle axis direction, which gives rise to the significant orientational feature of a single-peak orientational distribution under the circumstance of an applied magnetic field and a flow field [25][26][27][28][29][30][31]. In contrast, hematite particles exhibit quite different characteristics because they are magnetized in a direction normal to the particle axis direction, and exhibit much weaker magnetization than magnetite [32][33][34][35].…”