(111)-Oriented Co0.8Fe2.2O4+δ thin film grown by pulsed laser deposition: Structural and magnetic properties

M. Khodaei; S. A. Seyyed Ebrahimi; Yong Jun Park; Sun Hee Choi; Cheolgi Kim; Junwoo Son; Sunggi Baik

doi:10.1007/s10853-013-7504-5

(111)-Oriented Co_0.8Fe_2.2O_4+δ thin film grown by pulsed laser deposition: Structural and magnetic properties

M. Khodaei
, S. A. Seyyed Ebrahimi
, Yong Jun Park
, Sun Hee Choi
, Cheolgi Kim
, Junwoo Son
, Sunggi Baik

Department of Physics and Chemistry

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

10 Scopus citations

Abstract

The perfect (111)-oriented Co_0.8Fe_2.2O _4+δ thin films were grown on Pt(111)/Si substrate by pulsed laser deposition technique. Co_0.8Fe_2.2O _4+δ film grown at oxygen pressure of 10 mTorr (optimum condition) has the highest (111)-orientation degree, the lowest surface roughness, uniformly compacted nanosize grain-feature structure (50-80 nm), and the highest magnetization. The Fe K-edge X-ray absorption near edge structure analyses revealed that, in Fe-doped CoFe₂O₄ film, the Fe also exists as Fe³⁺ (Co_0.8Fe_2.2O _4+δ ), which affects the lattice parameter as well as magnetic properties. The magnetic properties (saturation magnetization, coercivity, and squareness) of Co_0.8Fe_2.2O_4+δ thin film are significantly higher than those of CoFe₂O₄ film. Moreover, the (111)-oriented Co_0.8Fe_2.2O _4+δ thin film demonstrates strong in-plane magnetic anisotropy, which results from orientation, as well as the stress-induced magnetic anisotropy.

Original language	English
Pages (from-to)	6960-6969
Number of pages	10
Journal	Journal of Materials Science
Volume	48
Issue number	20
DOIs	https://doi.org/10.1007/s10853-013-7504-5
State	Published - Oct 2013

Bibliographical note

Funding Information:
Acknowledgements M. K. author is grateful for the financial support from Department of Materials Science & Engineering, and Ferroelectric Nano Materials Lab at POSTECH.

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@article{9412bfe6df724003be5fb016747c5a32,

title = "(111)-Oriented Co0.8Fe2.2O4+δ thin film grown by pulsed laser deposition: Structural and magnetic properties",

abstract = "The perfect (111)-oriented Co0.8Fe2.2O 4+δ thin films were grown on Pt(111)/Si substrate by pulsed laser deposition technique. Co0.8Fe2.2O 4+δ film grown at oxygen pressure of 10 mTorr (optimum condition) has the highest (111)-orientation degree, the lowest surface roughness, uniformly compacted nanosize grain-feature structure (50-80 nm), and the highest magnetization. The Fe K-edge X-ray absorption near edge structure analyses revealed that, in Fe-doped CoFe2O4 film, the Fe also exists as Fe3+ (Co0.8Fe2.2O 4+δ ), which affects the lattice parameter as well as magnetic properties. The magnetic properties (saturation magnetization, coercivity, and squareness) of Co0.8Fe2.2O4+δ thin film are significantly higher than those of CoFe2O4 film. Moreover, the (111)-oriented Co0.8Fe2.2O 4+δ thin film demonstrates strong in-plane magnetic anisotropy, which results from orientation, as well as the stress-induced magnetic anisotropy.",

author = "M. Khodaei and \{Seyyed Ebrahimi\}, \{S. A.\} and Park, \{Yong Jun\} and Choi, \{Sun Hee\} and Cheolgi Kim and Junwoo Son and Sunggi Baik",

note = "Funding Information: Acknowledgements M. K. author is grateful for the financial support from Department of Materials Science \& Engineering, and Ferroelectric Nano Materials Lab at POSTECH.",

year = "2013",

month = oct,

doi = "10.1007/s10853-013-7504-5",

language = "English",

volume = "48",

pages = "6960--6969",

journal = "Journal of Materials Science",

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T1 - (111)-Oriented Co0.8Fe2.2O4+δ thin film grown by pulsed laser deposition

T2 - Structural and magnetic properties

AU - Khodaei, M.

AU - Seyyed Ebrahimi, S. A.

AU - Park, Yong Jun

AU - Choi, Sun Hee

AU - Kim, Cheolgi

AU - Son, Junwoo

AU - Baik, Sunggi

N1 - Funding Information: Acknowledgements M. K. author is grateful for the financial support from Department of Materials Science & Engineering, and Ferroelectric Nano Materials Lab at POSTECH.

PY - 2013/10

Y1 - 2013/10

N2 - The perfect (111)-oriented Co0.8Fe2.2O 4+δ thin films were grown on Pt(111)/Si substrate by pulsed laser deposition technique. Co0.8Fe2.2O 4+δ film grown at oxygen pressure of 10 mTorr (optimum condition) has the highest (111)-orientation degree, the lowest surface roughness, uniformly compacted nanosize grain-feature structure (50-80 nm), and the highest magnetization. The Fe K-edge X-ray absorption near edge structure analyses revealed that, in Fe-doped CoFe2O4 film, the Fe also exists as Fe3+ (Co0.8Fe2.2O 4+δ ), which affects the lattice parameter as well as magnetic properties. The magnetic properties (saturation magnetization, coercivity, and squareness) of Co0.8Fe2.2O4+δ thin film are significantly higher than those of CoFe2O4 film. Moreover, the (111)-oriented Co0.8Fe2.2O 4+δ thin film demonstrates strong in-plane magnetic anisotropy, which results from orientation, as well as the stress-induced magnetic anisotropy.

AB - The perfect (111)-oriented Co0.8Fe2.2O 4+δ thin films were grown on Pt(111)/Si substrate by pulsed laser deposition technique. Co0.8Fe2.2O 4+δ film grown at oxygen pressure of 10 mTorr (optimum condition) has the highest (111)-orientation degree, the lowest surface roughness, uniformly compacted nanosize grain-feature structure (50-80 nm), and the highest magnetization. The Fe K-edge X-ray absorption near edge structure analyses revealed that, in Fe-doped CoFe2O4 film, the Fe also exists as Fe3+ (Co0.8Fe2.2O 4+δ ), which affects the lattice parameter as well as magnetic properties. The magnetic properties (saturation magnetization, coercivity, and squareness) of Co0.8Fe2.2O4+δ thin film are significantly higher than those of CoFe2O4 film. Moreover, the (111)-oriented Co0.8Fe2.2O 4+δ thin film demonstrates strong in-plane magnetic anisotropy, which results from orientation, as well as the stress-induced magnetic anisotropy.

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DO - 10.1007/s10853-013-7504-5

M3 - Article

AN - SCOPUS:84881186348

SN - 0022-2461

VL - 48

SP - 6960

EP - 6969

JO - Journal of Materials Science

JF - Journal of Materials Science

IS - 20

ER -

(111)-Oriented Co_0.8Fe_2.2O_4+δ thin film grown by pulsed laser deposition: Structural and magnetic properties

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