P M Trivedi
Bhavan’s Sheth R A College of Science
Title: The collective effect of magnetic holes of different dimensions in superparamagnetic continnum subjected to gradient magnetic Field: A bireferengence study
Biography
Biography: P M Trivedi
Abstract
A magnetic liquid also called Ferro Fluid[1], is a colloidal dispersion of surfactant coated ferrite particles of nano-size. The behavior of such fluid is of super-paramagnetic nature[2]. In such diluted continnum micron size graphite particles were dispersed. This created magnetic holes [3]. As their size varies, their coagulations in the form of particle chains under external magnetic field is also affected. Light transmitted through thin films of such materials exhibit birefringence. Experimentally observed extinction parameters are reported to have reversal effects [4-5]. Role of gradient density distribution of anisotropic magnetic particles is discussed for the observed phenomenon. Necessary theoretical model is developed and compared with the experimental data.