Lithium ferrite nanoparticles for ferrofluid applications

V. K. Sankaranarayanan; Om Prakash; R. P. Pant; Mohammad Islam

doi:10.1016/S0304-8853(02)00708-4

Lithium ferrite nanoparticles for ferrofluid applications

V. K. Sankaranarayanan, Om Prakash, R. P. Pant, Mohammad Islam

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

53 Citations (Scopus)

Abstract

Nanoparticles of Lithium ferrite in the particle size range of 10nm have been prepared by a citrate precursor method at a relatively low temperature of 200°C. The particles show characteristic infra red (IR) spectrum of lithium ferrite and broadened X-ray diffraction (XRD) patterns typical of the nanoparticle nature. The sample decomposed at 200°C has the β-LiFe ₅O₈ type (a disordered type of spinel) structure which on annealing at 350°C transforms to the α-LiFe₅O₈ type (an ordered type spinel) structure as shown by both IR spectra and XRD studies. Magnetization curves indicate a particle size distribution consisting of both ferromagnetic particles and a superparamagnetic fraction. With 4ΠM_s values of 2000G these particles could be useful for applications in certain low magnetization ferrofluids.

Original language	English
Pages (from-to)	7-9
Number of pages	3
Journal	Journal of Magnetism and Magnetic Materials
Volume	252
DOIs	https://doi.org/10.1016/S0304-8853(02)00708-4
Publication status	Published - Nov 2002
Externally published	Yes

Keywords

Ferrofluids
Lithium ferrite
Nanoparticles and magnetization

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1016/S0304-8853(02)00708-4

Cite this

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title = "Lithium ferrite nanoparticles for ferrofluid applications",

abstract = "Nanoparticles of Lithium ferrite in the particle size range of 10nm have been prepared by a citrate precursor method at a relatively low temperature of 200°C. The particles show characteristic infra red (IR) spectrum of lithium ferrite and broadened X-ray diffraction (XRD) patterns typical of the nanoparticle nature. The sample decomposed at 200°C has the β-LiFe 5O8 type (a disordered type of spinel) structure which on annealing at 350°C transforms to the α-LiFe5O8 type (an ordered type spinel) structure as shown by both IR spectra and XRD studies. Magnetization curves indicate a particle size distribution consisting of both ferromagnetic particles and a superparamagnetic fraction. With 4ΠMs values of 2000G these particles could be useful for applications in certain low magnetization ferrofluids.",

keywords = "Ferrofluids, Lithium ferrite, Nanoparticles and magnetization",

author = "Sankaranarayanan, {V. K.} and Om Prakash and Pant, {R. P.} and Mohammad Islam",

year = "2002",

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doi = "10.1016/S0304-8853(02)00708-4",

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journal = "Journal of Magnetism and Magnetic Materials",

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T1 - Lithium ferrite nanoparticles for ferrofluid applications

AU - Sankaranarayanan, V. K.

AU - Prakash, Om

AU - Pant, R. P.

AU - Islam, Mohammad

PY - 2002/11

Y1 - 2002/11

N2 - Nanoparticles of Lithium ferrite in the particle size range of 10nm have been prepared by a citrate precursor method at a relatively low temperature of 200°C. The particles show characteristic infra red (IR) spectrum of lithium ferrite and broadened X-ray diffraction (XRD) patterns typical of the nanoparticle nature. The sample decomposed at 200°C has the β-LiFe 5O8 type (a disordered type of spinel) structure which on annealing at 350°C transforms to the α-LiFe5O8 type (an ordered type spinel) structure as shown by both IR spectra and XRD studies. Magnetization curves indicate a particle size distribution consisting of both ferromagnetic particles and a superparamagnetic fraction. With 4ΠMs values of 2000G these particles could be useful for applications in certain low magnetization ferrofluids.

AB - Nanoparticles of Lithium ferrite in the particle size range of 10nm have been prepared by a citrate precursor method at a relatively low temperature of 200°C. The particles show characteristic infra red (IR) spectrum of lithium ferrite and broadened X-ray diffraction (XRD) patterns typical of the nanoparticle nature. The sample decomposed at 200°C has the β-LiFe 5O8 type (a disordered type of spinel) structure which on annealing at 350°C transforms to the α-LiFe5O8 type (an ordered type spinel) structure as shown by both IR spectra and XRD studies. Magnetization curves indicate a particle size distribution consisting of both ferromagnetic particles and a superparamagnetic fraction. With 4ΠMs values of 2000G these particles could be useful for applications in certain low magnetization ferrofluids.

KW - Ferrofluids

KW - Lithium ferrite

KW - Nanoparticles and magnetization

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U2 - 10.1016/S0304-8853(02)00708-4

DO - 10.1016/S0304-8853(02)00708-4

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EP - 9

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

ER -

Lithium ferrite nanoparticles for ferrofluid applications

Abstract

Keywords

ASJC Scopus subject areas

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