Facile sonochemical preparation and magnetic properties of strontium hexaferrite (SrFe12O19) nanoparticles

P. Sivakumar; Lior Shani; Yosef Yeshurun; Avner Shaulov; Aharon Gedanken

doi:10.1007/s10854-016-4482-9

Facile sonochemical preparation and magnetic properties of strontium hexaferrite (SrFe₁₂O₁₉) nanoparticles

P. Sivakumar, Lior Shani, Yosef Yeshurun, Avner Shaulov, Aharon Gedanken

National Cheng Kung University

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

21 Scopus citations

Abstract

The hard magnetic material M-type strontium hexaferrite (SrFe₁₂O₁₉) was prepared by a facile surfactantfree sonochemical strategy and subsequently by a calcination process. The surface morphologies, structures, and Curie temperature of the obtained final product was investigated by powder X-ray diffraction (XRD), high resolution scanning electron microscopy (HRSEM), transmission electron microscopy (TEM), BET (Brunauer– Emmett–Teller) specific surface area (SSA) and thermogravimetric analysis (TGA). XRD confirmed the formation of single-phase strontium hexaferrite with space group P63/ mmc (194) and hexagonal structure and the mean primary crystallite size was found to be 44 nm. The morphology of synthesized SrFe₁₂O₁₉ product was in spherical shape with good crystalline nature. The measured Curie temperature (T_c) of the nanoparticles was around 462 °C. The magnetic property of the sample was measured by using a Superconducting Quantum Interference Device (SQUID) magnetometer at temperatures between 4 and 300 K. The measured saturation magnetization (M_s) at 300 K, 33 emu/ g, is significantly lower than that found for bulk SrFe₁₂O₁₉, probably reflecting a size effect of the nano-particles.

Original language	English
Pages (from-to)	5707-5714
Number of pages	8
Journal	Journal of Materials Science: Materials in Electronics
Volume	27
Issue number	6
DOIs	https://doi.org/10.1007/s10854-016-4482-9
State	Published - Jun 2016

Bibliographical note

Publisher Copyright:
© Springer Science+Business Media New York 2016.

Funding

P. Sivakumar thanks the Council for Higher Education, State of Israel for providing him the PBC postdoctoral fellowship. Prof. Yosef Yeshurun acknowledges a support from the Israel Science Foundation.

Funders	Funder number
Israel Science Foundation
Council for Higher Education

Access to Document

10.1007/s10854-016-4482-9

Cite this

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title = "Facile sonochemical preparation and magnetic properties of strontium hexaferrite (SrFe12O19) nanoparticles",

abstract = "The hard magnetic material M-type strontium hexaferrite (SrFe12O19) was prepared by a facile surfactantfree sonochemical strategy and subsequently by a calcination process. The surface morphologies, structures, and Curie temperature of the obtained final product was investigated by powder X-ray diffraction (XRD), high resolution scanning electron microscopy (HRSEM), transmission electron microscopy (TEM), BET (Brunauer– Emmett–Teller) specific surface area (SSA) and thermogravimetric analysis (TGA). XRD confirmed the formation of single-phase strontium hexaferrite with space group P63/ mmc (194) and hexagonal structure and the mean primary crystallite size was found to be 44 nm. The morphology of synthesized SrFe12O19 product was in spherical shape with good crystalline nature. The measured Curie temperature (Tc) of the nanoparticles was around 462 °C. The magnetic property of the sample was measured by using a Superconducting Quantum Interference Device (SQUID) magnetometer at temperatures between 4 and 300 K. The measured saturation magnetization (Ms) at 300 K, 33 emu/ g, is significantly lower than that found for bulk SrFe12O19, probably reflecting a size effect of the nano-particles.",

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