Thermal annealing effect on magnetism and cation distribution in disordered ZnFe2O4 thin films deposited on glass substrates

Seisuke Nakashima; Koji Fujita; Katsuhisa Tanaka; Kazuyuki Hirao; Tomoyuki Yamamoto; Isao Tanaka

doi:10.1016/j.jmmm.2006.11.144

Thermal annealing effect on magnetism and cation distribution in disordered ZnFe₂O₄ thin films deposited on glass substrates

Seisuke Nakashima, Koji Fujita^*, Katsuhisa Tanaka, Kazuyuki Hirao, Tomoyuki Yamamoto, Isao Tanaka

^*Corresponding author for this work

School of Fundamental Science and Engineering

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

41 Citations (Scopus)

Abstract

The effect of thermal annealing on magnetic properties has been investigated for disordered zinc ferrite (ZnFe₂O₄) thin films deposited on silica glass substrates using a sputtering method. The magnetization at room temperature is enhanced by annealing at relatively low temperature such as 300 °C and decreased by annealing at higher temperatures. X-ray absorption near edge structures indicate that ZnFe₂O₄ thin film annealed at 300 °C possesses disordered cation distribution similar to that for as-deposited thin film. It is presumed that the enhancement of magnetization by annealing at 300 °C is due to precipitation of disordered ZnFe₂O₄ crystal from an amorphous matrix formed in the as-deposited thin film.

Original language	English
Pages (from-to)	2543-2545
Number of pages	3
Journal	Journal of Magnetism and Magnetic Materials
Volume	310
Issue number	2 SUPPL. PART 3
DOIs	https://doi.org/10.1016/j.jmmm.2006.11.144
Publication status	Published - 2007 Mar

Keywords

Cation distribution
First-principles calculation
Thin film
XANES
Zinc ferrite

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1016/j.jmmm.2006.11.144

Cite this

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title = "Thermal annealing effect on magnetism and cation distribution in disordered ZnFe2O4 thin films deposited on glass substrates",

abstract = "The effect of thermal annealing on magnetic properties has been investigated for disordered zinc ferrite (ZnFe2O4) thin films deposited on silica glass substrates using a sputtering method. The magnetization at room temperature is enhanced by annealing at relatively low temperature such as 300 °C and decreased by annealing at higher temperatures. X-ray absorption near edge structures indicate that ZnFe2O4 thin film annealed at 300 °C possesses disordered cation distribution similar to that for as-deposited thin film. It is presumed that the enhancement of magnetization by annealing at 300 °C is due to precipitation of disordered ZnFe2O4 crystal from an amorphous matrix formed in the as-deposited thin film.",

keywords = "Cation distribution, First-principles calculation, Thin film, XANES, Zinc ferrite",

author = "Seisuke Nakashima and Koji Fujita and Katsuhisa Tanaka and Kazuyuki Hirao and Tomoyuki Yamamoto and Isao Tanaka",

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language = "English",

volume = "310",

pages = "2543--2545",

journal = "Journal of Magnetism and Magnetic Materials",

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T1 - Thermal annealing effect on magnetism and cation distribution in disordered ZnFe2O4 thin films deposited on glass substrates

AU - Nakashima, Seisuke

AU - Fujita, Koji

AU - Tanaka, Katsuhisa

AU - Hirao, Kazuyuki

AU - Yamamoto, Tomoyuki

AU - Tanaka, Isao

PY - 2007/3

Y1 - 2007/3

N2 - The effect of thermal annealing on magnetic properties has been investigated for disordered zinc ferrite (ZnFe2O4) thin films deposited on silica glass substrates using a sputtering method. The magnetization at room temperature is enhanced by annealing at relatively low temperature such as 300 °C and decreased by annealing at higher temperatures. X-ray absorption near edge structures indicate that ZnFe2O4 thin film annealed at 300 °C possesses disordered cation distribution similar to that for as-deposited thin film. It is presumed that the enhancement of magnetization by annealing at 300 °C is due to precipitation of disordered ZnFe2O4 crystal from an amorphous matrix formed in the as-deposited thin film.

AB - The effect of thermal annealing on magnetic properties has been investigated for disordered zinc ferrite (ZnFe2O4) thin films deposited on silica glass substrates using a sputtering method. The magnetization at room temperature is enhanced by annealing at relatively low temperature such as 300 °C and decreased by annealing at higher temperatures. X-ray absorption near edge structures indicate that ZnFe2O4 thin film annealed at 300 °C possesses disordered cation distribution similar to that for as-deposited thin film. It is presumed that the enhancement of magnetization by annealing at 300 °C is due to precipitation of disordered ZnFe2O4 crystal from an amorphous matrix formed in the as-deposited thin film.

KW - Cation distribution

KW - First-principles calculation

KW - Thin film

KW - XANES

KW - Zinc ferrite

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