High Coercivity of Co-Ferrite Thin Films Prepared by Sol-Gel Method

Hitoshi Ohashi; Yasuo Okazaki; Yutaka Ohya; Shunji Yanase; Shuichiro Hashi

doi:10.1109/TMAG.2006.879894

High Coercivity of Co-Ferrite Thin Films Prepared by Sol-Gel Method

Hitoshi Ohashi, Yasuo Okazaki, Yutaka Ohya, Shunji Yanase, Shuichiro Hashi

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

6 Citations (Scopus)

Abstract

Magnetic properties related to nano-structure have been investigated for sol-gel grown spinel Co-ferrite thin films of which thickness was 200–300 nm controlled by spin coating. The magnetic properties depended on the annealing temperature, and the coercivity of 6.3 kOe was obtained at 923 K, which is about three times higher than that ever reported in Co-ferrite thin films by sol-gel method. The microstructure transformed into columnar from granular at the annealing temperature of 923 K, where magnetic anisotropy and high squareness ratio was observed.

Original language	English
Pages (from-to)	2891-2893
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	42
Issue number	10
DOIs	https://doi.org/10.1109/TMAG.2006.879894
Publication status	Published - 2006 Oct
Externally published	Yes

Keywords

Co-ferrite
Coercivity
sol-gel method
thin film

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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abstract = "Magnetic properties related to nano-structure have been investigated for sol-gel grown spinel Co-ferrite thin films of which thickness was 200–300 nm controlled by spin coating. The magnetic properties depended on the annealing temperature, and the coercivity of 6.3 kOe was obtained at 923 K, which is about three times higher than that ever reported in Co-ferrite thin films by sol-gel method. The microstructure transformed into columnar from granular at the annealing temperature of 923 K, where magnetic anisotropy and high squareness ratio was observed.",

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author = "Hitoshi Ohashi and Yasuo Okazaki and Yutaka Ohya and Shunji Yanase and Shuichiro Hashi",

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AU - Ohashi, Hitoshi

AU - Okazaki, Yasuo

AU - Ohya, Yutaka

AU - Yanase, Shunji

AU - Hashi, Shuichiro

PY - 2006/10

Y1 - 2006/10

N2 - Magnetic properties related to nano-structure have been investigated for sol-gel grown spinel Co-ferrite thin films of which thickness was 200–300 nm controlled by spin coating. The magnetic properties depended on the annealing temperature, and the coercivity of 6.3 kOe was obtained at 923 K, which is about three times higher than that ever reported in Co-ferrite thin films by sol-gel method. The microstructure transformed into columnar from granular at the annealing temperature of 923 K, where magnetic anisotropy and high squareness ratio was observed.

AB - Magnetic properties related to nano-structure have been investigated for sol-gel grown spinel Co-ferrite thin films of which thickness was 200–300 nm controlled by spin coating. The magnetic properties depended on the annealing temperature, and the coercivity of 6.3 kOe was obtained at 923 K, which is about three times higher than that ever reported in Co-ferrite thin films by sol-gel method. The microstructure transformed into columnar from granular at the annealing temperature of 923 K, where magnetic anisotropy and high squareness ratio was observed.

KW - Co-ferrite

KW - Coercivity

KW - sol-gel method

KW - thin film

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High Coercivity of Co-Ferrite Thin Films Prepared by Sol-Gel Method

Abstract

Keywords

ASJC Scopus subject areas

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