Relation of structure and magnetic properties in nickel substituted MgFe2O4

Ravindar Tadi; Yong Il Kim; Anand Kumar Sarella; Cheol Gi Kim; Kwon Sang Ryu

doi:10.1016/j.jmmm.2010.06.029

Relation of structure and magnetic properties in nickel substituted MgFe₂O₄

Ravindar Tadi, Yong Il Kim, Anand Kumar Sarella, Cheol Gi Kim, Kwon Sang Ryu

Department of Physics and Chemistry

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

15 Scopus citations

Abstract

This study presents the structure-related magnetic properties of nickel substituted MgFe_2-xNi_xO₄ with x=0.010.20, synthesized using thermal decomposition of metal organic starting materials. The samples were annealed at temperatures ranging from 900 to 1100 °C in air. Magnetic and electric properties were characterized using vibrating sample magnetometer and an impedance analyzer, respectively. The fraction of inverse spinel structure was found to decrease with increase in nickel concentration. The samples exhibited soft magnetic behavior. The magnetization was found to depend on the substitution of Ni atoms on the octahedral sites and on the average number of valence electrons. The dielectric properties were found to have higher values at low frequency and decreased with increase in frequency. An enhancement of the dielectric constant was observed upon increase in the annealing temperature.

Original language	English
Pages (from-to)	3372-3376
Number of pages	5
Journal	Journal of Magnetism and Magnetic Materials
Volume	322
Issue number	21
DOIs	https://doi.org/10.1016/j.jmmm.2010.06.029
State	Published - Nov 2010

Bibliographical note

Funding Information:
Funding for this work has been provided by Center for Nanoscale Mechatronics and Manufacturing sponsored by the Ministry of Science and Technology of Korea.

Keywords

BH loop
Dielectric constant
Dissipation factor
Magnetization
Spinel

Access to Document

10.1016/j.jmmm.2010.06.029

Cite this

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title = "Relation of structure and magnetic properties in nickel substituted MgFe2O4",

abstract = "This study presents the structure-related magnetic properties of nickel substituted MgFe2-xNixO4 with x=0.010.20, synthesized using thermal decomposition of metal organic starting materials. The samples were annealed at temperatures ranging from 900 to 1100 °C in air. Magnetic and electric properties were characterized using vibrating sample magnetometer and an impedance analyzer, respectively. The fraction of inverse spinel structure was found to decrease with increase in nickel concentration. The samples exhibited soft magnetic behavior. The magnetization was found to depend on the substitution of Ni atoms on the octahedral sites and on the average number of valence electrons. The dielectric properties were found to have higher values at low frequency and decreased with increase in frequency. An enhancement of the dielectric constant was observed upon increase in the annealing temperature.",

keywords = "BH loop, Dielectric constant, Dissipation factor, Magnetization, Spinel",

author = "Ravindar Tadi and Kim, {Yong Il} and Sarella, {Anand Kumar} and {Gi Kim}, Cheol and Ryu, {Kwon Sang}",

note = "Funding Information: Funding for this work has been provided by Center for Nanoscale Mechatronics and Manufacturing sponsored by the Ministry of Science and Technology of Korea.",

year = "2010",

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doi = "10.1016/j.jmmm.2010.06.029",

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T1 - Relation of structure and magnetic properties in nickel substituted MgFe2O4

AU - Tadi, Ravindar

AU - Kim, Yong Il

AU - Sarella, Anand Kumar

AU - Gi Kim, Cheol

AU - Ryu, Kwon Sang

N1 - Funding Information: Funding for this work has been provided by Center for Nanoscale Mechatronics and Manufacturing sponsored by the Ministry of Science and Technology of Korea.

PY - 2010/11

Y1 - 2010/11

N2 - This study presents the structure-related magnetic properties of nickel substituted MgFe2-xNixO4 with x=0.010.20, synthesized using thermal decomposition of metal organic starting materials. The samples were annealed at temperatures ranging from 900 to 1100 °C in air. Magnetic and electric properties were characterized using vibrating sample magnetometer and an impedance analyzer, respectively. The fraction of inverse spinel structure was found to decrease with increase in nickel concentration. The samples exhibited soft magnetic behavior. The magnetization was found to depend on the substitution of Ni atoms on the octahedral sites and on the average number of valence electrons. The dielectric properties were found to have higher values at low frequency and decreased with increase in frequency. An enhancement of the dielectric constant was observed upon increase in the annealing temperature.

AB - This study presents the structure-related magnetic properties of nickel substituted MgFe2-xNixO4 with x=0.010.20, synthesized using thermal decomposition of metal organic starting materials. The samples were annealed at temperatures ranging from 900 to 1100 °C in air. Magnetic and electric properties were characterized using vibrating sample magnetometer and an impedance analyzer, respectively. The fraction of inverse spinel structure was found to decrease with increase in nickel concentration. The samples exhibited soft magnetic behavior. The magnetization was found to depend on the substitution of Ni atoms on the octahedral sites and on the average number of valence electrons. The dielectric properties were found to have higher values at low frequency and decreased with increase in frequency. An enhancement of the dielectric constant was observed upon increase in the annealing temperature.

KW - BH loop

KW - Dielectric constant

KW - Dissipation factor

KW - Magnetization

KW - Spinel

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