Structural and magnetic characterizations of coprecipitated Ni-Zn and Mn-Zn ferrite nanoparticles

B. Parvatheeswara Rao; Chong Oh Kim; Cheol Gi Kim; I. Dumitru; L. Spinu; O. F. Caltun

doi:10.1109/TMAG.2006.879901

Structural and magnetic characterizations of coprecipitated Ni-Zn and Mn-Zn ferrite nanoparticles

B. Parvatheeswara Rao, Chong Oh Kim, Cheol Gi Kim, I. Dumitru, L. Spinu, O. F. Caltun

Department of Physics and Chemistry

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

36 Scopus citations

Abstract

Two mixed ferrite systems, namely Ni_0.65Zn_0.35Fe₂O₄ (Ni-Zn) and Mn_0.75 Zn_0.18 Fe_2.07 O₄ (Mn-Zn) have been prepared by coprecipitation method, and then the resulting ultrafine powders were heat treated at different temperatures from 200 to 800 C for improved crystallinity and magnetic properties. The samples were characterized by X-ray diffraction, vibrating sample magnetometry, and ferromagnetic resonance spectrometry. As a result of the heat treatment, the average particle size has been found to increase from 9.9 to 15.7 nm for Ni-Zn ferrites and from 2.4 to 10.2 nm for Mn-Zn ferrites, and the corresponding magnetization values have increased from 9.1 to 23 emu/g for Ni-Zn ferrites and from 7.9 to 11.7 emu/g for Mn-Zn ferrites, respectively. The results are discussed in the light of changes in particle size and inversion degree parameter for cationic distribution at nanoscales.

Original language	English
Article number	879901
Pages (from-to)	2858-2860
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	42
Issue number	10
DOIs	https://doi.org/10.1109/TMAG.2006.879901
State	Published - Oct 2006

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Publisher Copyright:
© 2006 IEEE.

Keywords

Coercivity
Coprecipitation
Ferromagnetic resonance linewidth and magnetic materials
Magnetization
Ni-Zn and Mn-Zn ferrite nanoparticles

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title = "Structural and magnetic characterizations of coprecipitated Ni-Zn and Mn-Zn ferrite nanoparticles",

abstract = "Two mixed ferrite systems, namely Ni0.65Zn0.35Fe2O4 (Ni-Zn) and Mn0.75 Zn0.18 Fe2.07 O4 (Mn-Zn) have been prepared by coprecipitation method, and then the resulting ultrafine powders were heat treated at different temperatures from 200 to 800 C for improved crystallinity and magnetic properties. The samples were characterized by X-ray diffraction, vibrating sample magnetometry, and ferromagnetic resonance spectrometry. As a result of the heat treatment, the average particle size has been found to increase from 9.9 to 15.7 nm for Ni-Zn ferrites and from 2.4 to 10.2 nm for Mn-Zn ferrites, and the corresponding magnetization values have increased from 9.1 to 23 emu/g for Ni-Zn ferrites and from 7.9 to 11.7 emu/g for Mn-Zn ferrites, respectively. The results are discussed in the light of changes in particle size and inversion degree parameter for cationic distribution at nanoscales.",

keywords = "Coercivity, Coprecipitation, Ferromagnetic resonance linewidth and magnetic materials, Magnetization, Ni-Zn and Mn-Zn ferrite nanoparticles",

author = "Rao, {B. Parvatheeswara} and Kim, {Chong Oh} and Kim, {Cheol Gi} and I. Dumitru and L. Spinu and Caltun, {O. F.}",

note = "Publisher Copyright: {\textcopyright} 2006 IEEE.",

year = "2006",

month = oct,

doi = "10.1109/TMAG.2006.879901",

language = "English",

volume = "42",

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AU - Rao, B. Parvatheeswara

AU - Kim, Chong Oh

AU - Kim, Cheol Gi

AU - Dumitru, I.

AU - Spinu, L.

AU - Caltun, O. F.

PY - 2006/10

Y1 - 2006/10

N2 - Two mixed ferrite systems, namely Ni0.65Zn0.35Fe2O4 (Ni-Zn) and Mn0.75 Zn0.18 Fe2.07 O4 (Mn-Zn) have been prepared by coprecipitation method, and then the resulting ultrafine powders were heat treated at different temperatures from 200 to 800 C for improved crystallinity and magnetic properties. The samples were characterized by X-ray diffraction, vibrating sample magnetometry, and ferromagnetic resonance spectrometry. As a result of the heat treatment, the average particle size has been found to increase from 9.9 to 15.7 nm for Ni-Zn ferrites and from 2.4 to 10.2 nm for Mn-Zn ferrites, and the corresponding magnetization values have increased from 9.1 to 23 emu/g for Ni-Zn ferrites and from 7.9 to 11.7 emu/g for Mn-Zn ferrites, respectively. The results are discussed in the light of changes in particle size and inversion degree parameter for cationic distribution at nanoscales.

AB - Two mixed ferrite systems, namely Ni0.65Zn0.35Fe2O4 (Ni-Zn) and Mn0.75 Zn0.18 Fe2.07 O4 (Mn-Zn) have been prepared by coprecipitation method, and then the resulting ultrafine powders were heat treated at different temperatures from 200 to 800 C for improved crystallinity and magnetic properties. The samples were characterized by X-ray diffraction, vibrating sample magnetometry, and ferromagnetic resonance spectrometry. As a result of the heat treatment, the average particle size has been found to increase from 9.9 to 15.7 nm for Ni-Zn ferrites and from 2.4 to 10.2 nm for Mn-Zn ferrites, and the corresponding magnetization values have increased from 9.1 to 23 emu/g for Ni-Zn ferrites and from 7.9 to 11.7 emu/g for Mn-Zn ferrites, respectively. The results are discussed in the light of changes in particle size and inversion degree parameter for cationic distribution at nanoscales.

KW - Coercivity

KW - Coprecipitation

KW - Ferromagnetic resonance linewidth and magnetic materials

KW - Magnetization

KW - Ni-Zn and Mn-Zn ferrite nanoparticles

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DO - 10.1109/TMAG.2006.879901

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JO - IEEE Transactions on Magnetics

JF - IEEE Transactions on Magnetics

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ER -

Structural and magnetic characterizations of coprecipitated Ni-Zn and Mn-Zn ferrite nanoparticles

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