Effect of oxygen vacancies in the magnetic properties of the amorphous CoFe2O4 films

Dooyong Lee; Chang Woo Cho; Ji Woong Kim; Jong Seong Bae; Hyung Joong Yun; Jouhahn Lee; Sungkyun Park

doi:10.1016/j.jnoncrysol.2016.11.002

Effect of oxygen vacancies in the magnetic properties of the amorphous CoFe₂O₄ films

Dooyong Lee, Chang Woo Cho, Ji Woong Kim, Jong Seong Bae, Hyung Joong Yun, Jouhahn Lee, Sungkyun Park

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

21 Scopus citations

Abstract

Amorphous CoFe₂O₄ films with different thicknesses were deposited on MgO(001) substrates to examine the correlation between the oxygen vacancy and magnetic properties of the films. As the film thickness increased, the films became packed and smooth with well-defined interfaces. The magnetic hysteresis loop on the out-of-plane and in-plane showed an increased saturation magnetization and decreased coercivity when the film thickness was increased. Furthermore, the number of oxygen vacancies decreased with increasing films thickness. Those observations suggest that the presence of the correlation between the magnetic property variations and number of oxygen vacancies.

Original language	English
Pages (from-to)	83-87
Number of pages	5
Journal	Journal of Non-Crystalline Solids
Volume	456
DOIs	https://doi.org/10.1016/j.jnoncrysol.2016.11.002
State	Published - 15 Jan 2017

Keywords

Amorphous CoFeO film
Magnetic properties
Oxygen vacancy

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10.1016/j.jnoncrysol.2016.11.002

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title = "Effect of oxygen vacancies in the magnetic properties of the amorphous CoFe2O4 films",

abstract = "Amorphous CoFe2O4 films with different thicknesses were deposited on MgO(001) substrates to examine the correlation between the oxygen vacancy and magnetic properties of the films. As the film thickness increased, the films became packed and smooth with well-defined interfaces. The magnetic hysteresis loop on the out-of-plane and in-plane showed an increased saturation magnetization and decreased coercivity when the film thickness was increased. Furthermore, the number of oxygen vacancies decreased with increasing films thickness. Those observations suggest that the presence of the correlation between the magnetic property variations and number of oxygen vacancies.",

keywords = "Amorphous CoFeO film, Magnetic properties, Oxygen vacancy",

author = "Dooyong Lee and Cho, {Chang Woo} and Kim, {Ji Woong} and Bae, {Jong Seong} and Yun, {Hyung Joong} and Jouhahn Lee and Sungkyun Park",

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T1 - Effect of oxygen vacancies in the magnetic properties of the amorphous CoFe2O4 films

AU - Lee, Dooyong

AU - Cho, Chang Woo

AU - Kim, Ji Woong

AU - Bae, Jong Seong

AU - Yun, Hyung Joong

AU - Lee, Jouhahn

AU - Park, Sungkyun

PY - 2017/1/15

Y1 - 2017/1/15

N2 - Amorphous CoFe2O4 films with different thicknesses were deposited on MgO(001) substrates to examine the correlation between the oxygen vacancy and magnetic properties of the films. As the film thickness increased, the films became packed and smooth with well-defined interfaces. The magnetic hysteresis loop on the out-of-plane and in-plane showed an increased saturation magnetization and decreased coercivity when the film thickness was increased. Furthermore, the number of oxygen vacancies decreased with increasing films thickness. Those observations suggest that the presence of the correlation between the magnetic property variations and number of oxygen vacancies.

AB - Amorphous CoFe2O4 films with different thicknesses were deposited on MgO(001) substrates to examine the correlation between the oxygen vacancy and magnetic properties of the films. As the film thickness increased, the films became packed and smooth with well-defined interfaces. The magnetic hysteresis loop on the out-of-plane and in-plane showed an increased saturation magnetization and decreased coercivity when the film thickness was increased. Furthermore, the number of oxygen vacancies decreased with increasing films thickness. Those observations suggest that the presence of the correlation between the magnetic property variations and number of oxygen vacancies.

KW - Amorphous CoFeO film

KW - Magnetic properties

KW - Oxygen vacancy

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DO - 10.1016/j.jnoncrysol.2016.11.002

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SN - 0022-3093

VL - 456

SP - 83

EP - 87

JO - Journal of Non-Crystalline Solids

JF - Journal of Non-Crystalline Solids

ER -

Effect of oxygen vacancies in the magnetic properties of the amorphous CoFe₂O₄ films

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Keywords

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