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; Rajendra Prasad Pant

doi:10.5185/amlett.2011.7288

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, Rajendra Prasad Pant

Research output: Contribution to journal › Article › peer-review

31 Citations (Scopus)

Abstract

Gd³⁺ ions substituted in Ni_0.5Zn_0.5Gd_xFe_2-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.

Original language	English
Pages (from-to)	399-405
Number of pages	7
Journal	Advanced Materials Letters
Volume	3
Issue number	5
DOIs	https://doi.org/10.5185/amlett.2011.7288
Publication status	Published - Nov 2012
Externally published	Yes

Keywords

Epr
G - value
Hrtem
Line width.
Nanoparticles
Resonance field
Spinel ferrite

ASJC Scopus subject areas

General Materials Science

Access to Document

10.5185/amlett.2011.7288

Cite this

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title = "Induced size effects of Gd3+ ions doping on structural and magnetic properties of Ni-Zn ferrite nanoparticles",

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.",

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author = "Balwinder Kaur and Manju Arora and Ajay Shankar and Srivastava, {Avanish Kumar} and Pant, {Rajendra Prasad}",

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AU - Kaur, Balwinder

AU - Arora, Manju

AU - Shankar, Ajay

AU - Srivastava, Avanish Kumar

AU - Pant, Rajendra Prasad

PY - 2012/11

Y1 - 2012/11

N2 - 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.

AB - 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.

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