NDLI: Study of Magnetoviscosity of Ferromagnetic MnZn-Ferrite Ferrofluid

Content Provider	IEEE Xplore Digital Library
Author	Thirupathi, G. Singh, R.
Copyright Year	1965
Abstract	Mn_0.75Zn_0.25Fe₂O₄ (MZF) ferrofluid was synthesized with oleic acid-coated MZF nanoparticles dispersed in toluene (less viscous fluid). The Rietveld refinement for the X-ray diffraction pattern of MZF nanoparticles showed the single phase spinel structure formation with Fd-3m space group. The nanophase and the particle size distribution of MZF nanoparticles (7-15 nm) were observed on transmission electron micrograph. The soft ferrimagentic behavior can be observed from the magnetization versus applied magnetic field (H) plots at 325 and 5 K. The power law behavior is verified for shear rate versus viscosity plots at various magnetic fields. The power index (n) value decreases from 0.1 to 0.04 with increase in magnetic field from 0 to 1.33 T. The low n -value indicates non-Newtonian behavior shear thinning for the ferrofluid at various applied magnetic fields. The Herschel-Bulkley model fit is verified for shear stress versus shear rate. The yield stress values were obtained by extrapolating the experimental shear stress versus shear rate plots to zero shear rate. The ferromagnetic nanoparticles (magnetic dipole particles) of ferrofluid rotate in the direction of magnetic field with the increase in field. Above certain magnetic field (>0.2 T), the magnetic field effect dominates other effects present in the fluid. This is due to long chain formation perpendicular to the shear flow field in the ferrofluid. We also discuss the dependence of viscosity and shear stress on applied magnetic field from magnetoviscosity plots at constant shear rates.
Sponsorship	IEEE Magnetics Society
Starting Page	1
Ending Page	4
Page Count	4
File Size	951717
File Format	PDF
ISSN	00189464
Volume Number	51
Issue Number	11
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Nanoparticles Magnetic fields Magnetomechanical effects Viscosity Magnetic liquids Stress magneto viscosity Ferrofluid magnetic nanoparticles magnetoviscosity
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Magnetoviscous Effect in a Biocompatible Ferrofluid

Digital/Analog Hybrid Magnetization of Magnetorheological Fluids for Expansion of Their Controllable Viscosity Range

The Magnetoviscous Effect of a Biocompatible Ferrofluid at High Shear Rates

Unusual Effects Measured Under DC Bias Conditions on MnZn Ferrite Material

The magnetomechanical effect under torsional stress in a cobalt ferrite composite

The magnetomechanical effect under torsional stress in a cobalt ferrite composite

A Permanent-Magnet Exciter for Magneto-Rheological Fluid-Based Haptic Interfaces

Coupled Magneto-Mechanical Analysis of Iron Sheets Under Biaxial Stress

Fe-Rich Ferromagnetic Wires for Mechanical-Stress Self-Sensing Materials

Study of Magnetoviscosity of Ferromagnetic MnZn-Ferrite Ferrofluid

Similar Documents

Magnetoviscous Effect in a Biocompatible Ferrofluid

Digital/Analog Hybrid Magnetization of Magnetorheological Fluids for Expansion of Their Controllable Viscosity Range

The Magnetoviscous Effect of a Biocompatible Ferrofluid at High Shear Rates

Unusual Effects Measured Under DC Bias Conditions on MnZn Ferrite Material

The magnetomechanical effect under torsional stress in a cobalt ferrite composite

The magnetomechanical effect under torsional stress in a cobalt ferrite composite

A Permanent-Magnet Exciter for Magneto-Rheological Fluid-Based Haptic Interfaces

Coupled Magneto-Mechanical Analysis of Iron Sheets Under Biaxial Stress

Fe-Rich Ferromagnetic Wires for Mechanical-Stress Self-Sensing Materials

Study of Magnetoviscosity of Ferromagnetic MnZn-Ferrite Ferrofluid