Indian materials smart materials
News Insight

Advanced Materials World Congress will be held in Stockholm, Sweden during 23-26 August 2015.

Online Advertising

Adv Mat Lett is an official journal of IAAM

VBRI Press is a member of CrossRefDOAJ
Adv Mat Lett is a member of DOAJ

fullabstractpdf

Get PDF

Full Article

Induced Size Effects Of Gd3+ ions Doping On Structural And Magnetic Properties Of Ni-Zn Ferrite Nanoparticles

Balwinder Kaur, Manju Arora, Ajay Shankar, Avanish Kumar Srivastava and Rajendra Prasad Pant

Volume 3, Issue 5, Page 399-405, Year 2012, Current Issue | DOI: 10.5185/amlett.2011.7288

Keywords: Spinel ferrite; nanoparticles; HRTEM, EPR; g – value; resonance field; line width.

Abstract: 

Gd3+ ions substituted in Ni0.5Zn0.5GdxFe2-xO4 (where x = 0.1, 0.2, 0.3) ferrite nanoparticles in the size range from 15 to 25 nm were prepared by chemical method. The effect of Gd3+ ions in spinel structure in correlation to structural and magnetic properties have been studied in detail using XRD, HRTEM and EPR techniques. The spin resonance confirms the ferromagnetic behaviour of these nanoparticles and higher order of dipolar-dipolar interaction. On increasing  Gd3+ ions concentrations, the super exchange interaction i.e. increase in movement of electron among Gd3+ - O - Fe3+ in the core group and the spin biasing in the glass layer has been interpreted. The decrease in ‘g’ value and increase in relaxation time is well correlated with the change of particle size on different concentrations of Gd3+ ions in Ni-Zn ferrite. Copyright © 2012 VBRI Press.

fullabstractpdf

Get PDF

Full Article