Paper Title:
Tailoring of the Magnetic Properties of Co, Fe and Ni Nanocrystallites
  Abstract

Ferromagnetic or superparamagnetic nanocrystallites, stabilized in carbon matrix, were prepared by the procedure comprising formation of the appropriate metal acrylamide complex, followed by frontal polymerization and pyrolysis of the polymer. The pyrolysis products were in a form of beads, which contained in their volume randomly distributed nanocrystallites. The nanocrystallites had various composition, magnetic properties and sizes ranging from few to tens of nanometers, depending on the element type. Application of this procedure stabilizes the nanostructure and enables processing of nanoparticles within a narrow window of sizes. The magnetic parameters depend on the crystallite size, determined by their chemical composition. The nanocrystallites pyrolysed at 773 K exhibited ferromagnetic properties for Co and Fe, and superparamagnetic behaviour for the Ni. The nanocrystallites can potentially be applied as sensors for tagging the biological substances or for targeted drug delivery.

  Info
Periodical
Materials Science Forum (Volumes 636-637)
Edited by
Luís Guerra ROSA and Fernanda MARGARIDO
Pages
671-675
DOI
10.4028/www.scientific.net/MSF.636-637.671
Citation
M. Leonowicz, E. Szmidt, A. D. Pomogailo, G. I. Dzhardimalieva, "Tailoring of the Magnetic Properties of Co, Fe and Ni Nanocrystallites", Materials Science Forum, Vols. 636-637, pp. 671-675, 2010
Online since
January 2010
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Myung Beom Park, Jae Hyun Shim, Nam Hee Cho
Abstract:Hydrogenated amorphous Si (a-Si:H) films were prepared by plasma enhanced chemical vapor deposition (PECVD) techniques, and the effect of...
954
Authors: J.S. Kim, Moo Young Huh, Jae Pyong Ahn
Abstract:Nanophase tin powder having sizes ranging from 6 to 40 nm was synthesized by the inert gas condensation method using helium as the...
9
Authors: Zhan Xin Zhang, Hui Li Li, Tao Liu, Feng Ming Wang
Abstract:The effective anisotropy constant and the saturation magnetization in nano composite Nd2Fe14B/α-Fe have been calculated...
292
Authors: Yu Xia Sun, Hua Yu, Hong Ri Liu, Yong Zhou, Zhao Xia
Chapter 2: Micro / Nano Materials
Abstract:Pr substituted Bi3Fe5O12 crystallites were prepared by a hydrothermal method using...
495
  | Authors: Traian Florin Marinca, Bogdan Viorel Neamţu, Ionel Chicinaş, Olivier Isnard
Chapter 1: Advanced Materials and Processing Technologies
Abstract:Nanocrystalline/nanosized magnetite - Fe3O4 powder was obtained by mechanical milling of well crystallized magnetite...
9