"Hot Nanotechnology Papers 2011": Gd substituted NiCa Ferrite/poly vinyl alcohol nanocomposite

Title: Gd substituted NiCa Ferrite/poly vinyl alcohol nanocomposite
Authors: Arun S. Prasad, S. N. Dolia
Affiliation: 1. Dept. of Physics, Arulmigu Meenakshi Amman College of
Engineering, Kanchipuram, India

2. Dept. of Physics, University of Rajasthan, Jaipur, India.

Abstract:

Magnetic nanocomposite material composed of poly vinyl alcohol encapsulated Ni0.2Ca0.8Gd0.08Fe1.92O4 was synthesized by a two step chemical method
including sol–gel combustion and solvent casting technique. The obtained
samples were characterized by powder X-ray diffraction; transmission
electron microscopy and Fourier transform infrared spectroscopy. The results
of spectroanalysis pointed towards the existence of a considerably feasible
interaction between the polymer chain and the ferrite particles. The dc
magnetization measurements divulged that both pristine and the nanocomposite
samples under applied magnetic field exhibit no hysteretic behavior at room
temperature, symptomatic of the superparamagnetic behavior. The departure of
field cooled and zero field cooled curves in the moment-versus-temperature
plot further confirmed the room temperature superparamagnetic behavior. The
extrapolation of the slope of the curves to *M=*0 imparted the average value
of Curie temperature at ∼323 K (50 °C) for both the samples, suggestive of
the efficacy of the material for finding application in self controlled
hyperthermia.

Link: http://dx.doi.org/10.1016/j.jmmm.2011.10.011

Views: 117

Tags: HNP2011

Comment

You need to be a member of The International NanoScience Community to add comments!

Join The International NanoScience Community

Next partner events of TINC

We are Media Partner of:

Welcome - about us

Welcome! Nanopaprika was cooked up by Hungarian chemistry PhD student in 2007. The main idea was to create something more personal than the other nano networks already on the Internet. Community is open to everyone from post-doctorial researchers and professors to students everywhere.

There is only one important assumption: you have to be interested in nano!

Nanopaprika is always looking for new partners, if you have any idea, contact me at editor@nanopaprika.eu

Dr. András Paszternák, founder of Nanopaprika

Publications by A. Paszternák:

Pd/Ni Synergestic Activity for Hydrogen Oxidation Reaction in Alkaline Conditions

The potential use of cellophane test strips for the quick determination of food colours

pH and CO2 Sensing by Curcumin-Coloured Cellophane Test Strip

Polymeric Honeycombs Decorated by Nickel Nanoparticles

Directed Deposition of Nickel Nanoparticles Using Self-Assembled Organic Template,

Organometallic deposition of ultrasmooth nanoscale Ni film,

Zigzag-shaped nickel nanowires via organometallic template-free route

Surface analytical characterization of passive iron surface modified by alkyl-phosphonic acid layers

Atomic Force Microscopy Studies of Alkyl-Phosphonate SAMs on Mica

Amorphous iron formation due to low energy heavy ion implantation in evaporated 57Fe thin films

Surface modification of passive iron by alkylphosphonic acid layers

Formation and structure of alkylphosphonic acid layers on passive iron

Structure of the nonionic surfactant triethoxy monooctylether C8E3 adsorbed at the free water surface, as seen from surface tension measurements and Monte Carlo simulations