Magnetic properties of glass-metal nanocomposites prepared by the sol-gel route and hot pressing

S. Roy; D. Das; D. Chakravorty; D. C. Agrawal

doi:10.1063/1.354344

Magnetic properties of glass-metal nanocomposites prepared by the sol-gel route and hot pressing

S. Roy
, D. Das
, D. Chakravorty
, D. C. Agrawal

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

Abstract

Glass-metal nanocomposite powders in the systems Fe/SiO₂ and Ni/SiO₂ have been prepared by the sol-gel technique followed by reduction treatment. Bulk nanocomposites are then fabricated by hot pressing these powders. The metal particle diameters range from 8.9 to 14.8 nm. The materials show enhanced coercivities, e.g., a maximum of 82 Oe in the case of Ni/SiO₂ and a maximum of 474 Oe in the case of Fe/SiO₂ systems. The Mössbauer spectra of Fe/SiO₂ samples are comprised of a ferromagnetic component superposed on a superparamagnetic doublet.

Original language	English
Pages (from-to)	4746-4749
Number of pages	4
Journal	Journal of Applied Physics
Volume	74
Issue number	7
DOIs	https://doi.org/10.1063/1.354344
Publication status	Published - 1993
Externally published	Yes

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10.1063/1.354344

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title = "Magnetic properties of glass-metal nanocomposites prepared by the sol-gel route and hot pressing",

abstract = "Glass-metal nanocomposite powders in the systems Fe/SiO2 and Ni/SiO2 have been prepared by the sol-gel technique followed by reduction treatment. Bulk nanocomposites are then fabricated by hot pressing these powders. The metal particle diameters range from 8.9 to 14.8 nm. The materials show enhanced coercivities, e.g., a maximum of 82 Oe in the case of Ni/SiO2 and a maximum of 474 Oe in the case of Fe/SiO2 systems. The M{\"o}ssbauer spectra of Fe/SiO2 samples are comprised of a ferromagnetic component superposed on a superparamagnetic doublet.",

author = "S. Roy and D. Das and D. Chakravorty and Agrawal, \{D. C.\}",

year = "1993",

doi = "10.1063/1.354344",

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T1 - Magnetic properties of glass-metal nanocomposites prepared by the sol-gel route and hot pressing

AU - Roy, S.

AU - Das, D.

AU - Chakravorty, D.

AU - Agrawal, D. C.

PY - 1993

Y1 - 1993

N2 - Glass-metal nanocomposite powders in the systems Fe/SiO2 and Ni/SiO2 have been prepared by the sol-gel technique followed by reduction treatment. Bulk nanocomposites are then fabricated by hot pressing these powders. The metal particle diameters range from 8.9 to 14.8 nm. The materials show enhanced coercivities, e.g., a maximum of 82 Oe in the case of Ni/SiO2 and a maximum of 474 Oe in the case of Fe/SiO2 systems. The Mössbauer spectra of Fe/SiO2 samples are comprised of a ferromagnetic component superposed on a superparamagnetic doublet.

AB - Glass-metal nanocomposite powders in the systems Fe/SiO2 and Ni/SiO2 have been prepared by the sol-gel technique followed by reduction treatment. Bulk nanocomposites are then fabricated by hot pressing these powders. The metal particle diameters range from 8.9 to 14.8 nm. The materials show enhanced coercivities, e.g., a maximum of 82 Oe in the case of Ni/SiO2 and a maximum of 474 Oe in the case of Fe/SiO2 systems. The Mössbauer spectra of Fe/SiO2 samples are comprised of a ferromagnetic component superposed on a superparamagnetic doublet.

UR - https://www.scopus.com/pages/publications/0001137650

U2 - 10.1063/1.354344

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JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 7

ER -

Magnetic properties of glass-metal nanocomposites prepared by the sol-gel route and hot pressing

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