Nanophase formation of strontium hexaferrite fine powder by the sonochemical method using Fe(CO)5

M. Sivakumar; A. Gedanken; W. Zhong; Y. W. Du; D. Bhattacharya; Y. Yeshurun; I. Felner

doi:10.1016/s0304-8853(03)00479-7

Nanophase formation of strontium hexaferrite fine powder by the sonochemical method using Fe(CO)₅

M. Sivakumar, A. Gedanken, W. Zhong, Y. W. Du, D. Bhattacharya, Y. Yeshurun, I. Felner

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

107 Scopus citations

Abstract

A fine strontium hexaferrite powder has been successfully synthesized by a sonochemical method employing Fe(CO)₅ and SrCO₃. SrCO ₃ was first synthesized using strontium nitrate and urea, and it was found that applying ultrasound radiation during this process results in the uniform formation of SrCO₃ hexagonal rods. These rods were then dispersed with in situ generated amorphous Fe₂O₃, using Fe(CO)₅ as the source. The resultant precursor was then calcined at 900°C, which is lower than the conventional solid-state reaction of applying 1300°C to get the strontium hexaferrite fine powder. This sonochemically derived ferrite exhibited an intrinsic coercivity of ∼4600 Oe and a saturation magnetization of ∼60 emu/g at 20 K and ∼32 emu/g at 300 K.

Original language	English
Pages (from-to)	95-104
Number of pages	10
Journal	Journal of Magnetism and Magnetic Materials
Volume	268
Issue number	1-2
DOIs	https://doi.org/10.1016/s0304-8853(03)00479-7
State	Published - Jan 2004

Bibliographical note

Funding Information:
We thank The Ministry of Science, Sport and Culture for a Materials Science grant through the Sino-Israeli program in Materials Science. We also thank Ms. Louise Braverman for editorial assistance.

Funding

We thank The Ministry of Science, Sport and Culture for a Materials Science grant through the Sino-Israeli program in Materials Science. We also thank Ms. Louise Braverman for editorial assistance.

Funders	Funder number
Ministry of Science, Sport and Culture for a Materials Science

Keywords

Cavitation
Hexaferrite
Magnetic
Nanomaterial
Sonochemistry

Access to Document

10.1016/s0304-8853(03)00479-7

Cite this

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title = "Nanophase formation of strontium hexaferrite fine powder by the sonochemical method using Fe(CO)5",

abstract = "A fine strontium hexaferrite powder has been successfully synthesized by a sonochemical method employing Fe(CO)5 and SrCO3. SrCO 3 was first synthesized using strontium nitrate and urea, and it was found that applying ultrasound radiation during this process results in the uniform formation of SrCO3 hexagonal rods. These rods were then dispersed with in situ generated amorphous Fe2O3, using Fe(CO)5 as the source. The resultant precursor was then calcined at 900°C, which is lower than the conventional solid-state reaction of applying 1300°C to get the strontium hexaferrite fine powder. This sonochemically derived ferrite exhibited an intrinsic coercivity of ∼4600 Oe and a saturation magnetization of ∼60 emu/g at 20 K and ∼32 emu/g at 300 K.",

keywords = "Cavitation, Hexaferrite, Magnetic, Nanomaterial, Sonochemistry",

author = "M. Sivakumar and A. Gedanken and W. Zhong and Du, {Y. W.} and D. Bhattacharya and Y. Yeshurun and I. Felner",

note = "Funding Information: We thank The Ministry of Science, Sport and Culture for a Materials Science grant through the Sino-Israeli program in Materials Science. We also thank Ms. Louise Braverman for editorial assistance.",

year = "2004",

month = jan,

doi = "10.1016/s0304-8853(03)00479-7",

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T1 - Nanophase formation of strontium hexaferrite fine powder by the sonochemical method using Fe(CO)5

AU - Sivakumar, M.

AU - Gedanken, A.

AU - Zhong, W.

AU - Du, Y. W.

AU - Bhattacharya, D.

AU - Yeshurun, Y.

AU - Felner, I.

N1 - Funding Information: We thank The Ministry of Science, Sport and Culture for a Materials Science grant through the Sino-Israeli program in Materials Science. We also thank Ms. Louise Braverman for editorial assistance.

PY - 2004/1

Y1 - 2004/1

N2 - A fine strontium hexaferrite powder has been successfully synthesized by a sonochemical method employing Fe(CO)5 and SrCO3. SrCO 3 was first synthesized using strontium nitrate and urea, and it was found that applying ultrasound radiation during this process results in the uniform formation of SrCO3 hexagonal rods. These rods were then dispersed with in situ generated amorphous Fe2O3, using Fe(CO)5 as the source. The resultant precursor was then calcined at 900°C, which is lower than the conventional solid-state reaction of applying 1300°C to get the strontium hexaferrite fine powder. This sonochemically derived ferrite exhibited an intrinsic coercivity of ∼4600 Oe and a saturation magnetization of ∼60 emu/g at 20 K and ∼32 emu/g at 300 K.

AB - A fine strontium hexaferrite powder has been successfully synthesized by a sonochemical method employing Fe(CO)5 and SrCO3. SrCO 3 was first synthesized using strontium nitrate and urea, and it was found that applying ultrasound radiation during this process results in the uniform formation of SrCO3 hexagonal rods. These rods were then dispersed with in situ generated amorphous Fe2O3, using Fe(CO)5 as the source. The resultant precursor was then calcined at 900°C, which is lower than the conventional solid-state reaction of applying 1300°C to get the strontium hexaferrite fine powder. This sonochemically derived ferrite exhibited an intrinsic coercivity of ∼4600 Oe and a saturation magnetization of ∼60 emu/g at 20 K and ∼32 emu/g at 300 K.

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KW - Hexaferrite

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KW - Nanomaterial

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