Investigations on nanocrystalline superparamagnetic particles of CoFe 2O4

R. P. Pant; Vinod Kumar; S. K. Halder; S. K. Gupta; Sukhvir Singh

doi:10.1142/S0219581X07004997

Investigations on nanocrystalline superparamagnetic particles of CoFe ₂O₄

R. P. Pant, Vinod Kumar, S. K. Halder, S. K. Gupta, Sukhvir Singh

CSIR - National Physical Laboratory

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

9 Citations (Scopus)

Abstract

Superparamagnetic (SP) crystalline cobalt ferrite (CoFe"2O"4) nanoparticles are synthesized by chemical co-precipitation method. Grown nanoparticles are annealed in air at various temperatures in the range 373 K to 1173 K to understand the variation in properties in nanoregion. Physical properties are analyzed for crystalline phase, crystallite size, particle size, shape, magnetization and relaxation behavior by using various characterization techniques viz. X-ray diffractometer (XRD), transmission electron microscope (TEM), vibrating sample magnetometer (VSM) and electron paramagnetic resonance (EPR). Annealing effect on various physical properties of particles are investigated. Particles are used in the development of stable ferrofluid.

Original language	English
Pages (from-to)	515-519
Number of pages	5
Journal	International Journal of Nanoscience
Volume	6
Issue number	6
DOIs	https://doi.org/10.1142/S0219581X07004997
Publication status	Published - Dec 2007
Externally published	Yes

Keywords

Annealing
Crystallite size
Ferrites
Magnetic domains
Nanocrystalline
Superparamagnetic

ASJC Scopus subject areas

Biotechnology
Bioengineering
General Materials Science
Condensed Matter Physics
Computer Science Applications
Electrical and Electronic Engineering

Access to Document

10.1142/S0219581X07004997

Cite this

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title = "Investigations on nanocrystalline superparamagnetic particles of CoFe 2O4",

abstract = "Superparamagnetic (SP) crystalline cobalt ferrite (CoFe{"}2O{"}4) nanoparticles are synthesized by chemical co-precipitation method. Grown nanoparticles are annealed in air at various temperatures in the range 373 K to 1173 K to understand the variation in properties in nanoregion. Physical properties are analyzed for crystalline phase, crystallite size, particle size, shape, magnetization and relaxation behavior by using various characterization techniques viz. X-ray diffractometer (XRD), transmission electron microscope (TEM), vibrating sample magnetometer (VSM) and electron paramagnetic resonance (EPR). Annealing effect on various physical properties of particles are investigated. Particles are used in the development of stable ferrofluid.",

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T1 - Investigations on nanocrystalline superparamagnetic particles of CoFe 2O4

AU - Pant, R. P.

AU - Kumar, Vinod

AU - Halder, S. K.

AU - Gupta, S. K.

AU - Singh, Sukhvir

PY - 2007/12

Y1 - 2007/12

N2 - Superparamagnetic (SP) crystalline cobalt ferrite (CoFe"2O"4) nanoparticles are synthesized by chemical co-precipitation method. Grown nanoparticles are annealed in air at various temperatures in the range 373 K to 1173 K to understand the variation in properties in nanoregion. Physical properties are analyzed for crystalline phase, crystallite size, particle size, shape, magnetization and relaxation behavior by using various characterization techniques viz. X-ray diffractometer (XRD), transmission electron microscope (TEM), vibrating sample magnetometer (VSM) and electron paramagnetic resonance (EPR). Annealing effect on various physical properties of particles are investigated. Particles are used in the development of stable ferrofluid.

AB - Superparamagnetic (SP) crystalline cobalt ferrite (CoFe"2O"4) nanoparticles are synthesized by chemical co-precipitation method. Grown nanoparticles are annealed in air at various temperatures in the range 373 K to 1173 K to understand the variation in properties in nanoregion. Physical properties are analyzed for crystalline phase, crystallite size, particle size, shape, magnetization and relaxation behavior by using various characterization techniques viz. X-ray diffractometer (XRD), transmission electron microscope (TEM), vibrating sample magnetometer (VSM) and electron paramagnetic resonance (EPR). Annealing effect on various physical properties of particles are investigated. Particles are used in the development of stable ferrofluid.

KW - Annealing

KW - Crystallite size

KW - Ferrites

KW - Magnetic domains

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KW - Superparamagnetic

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