Magnetic nanocheckerboards with tunable sizes in the Mn-doped CoFe 2O4 spinel

C. L. Zhang; C. M. Tseng; C. H. Chen; S. Yeo; Y. J. Choi; S. W. Cheong

doi:10.1063/1.2821838

Magnetic nanocheckerboards with tunable sizes in the Mn-doped CoFe ₂O₄ spinel

C. L. Zhang, C. M. Tseng, C. H. Chen, S. Yeo, Y. J. Choi, S. W. Cheong

Department of Physics

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

27 Citations (Scopus)

Abstract

Formation of magnetically ordered array of two types of rectangular nanorods, ∼300 nm in length and a few nanometers in size, is achieved in the Mn-doped Co Fe2 O4 spinel through chemical phase separation mediated by cooperative Jahn-Teller distortions. At room temperature, the magnetic nanorods, with composition close to Co Fe2 O4, interlace with the paramagnetic counterparts and form a highly organized checkerboard pattern in the cross section. The checkerboard size in the range of ∼13.8×7.9-∼17. 3×14.0 nm2 is tunable with composition and, particularly, with the isothermal annealing time. These three-dimensional nanocheckerboards exhibit a nearly ideal configuration for the patterned perpendicular recording medium.

Original language	English
Article number	233110
Journal	Applied Physics Letters
Volume	91
Issue number	23
DOIs	https://doi.org/10.1063/1.2821838
Publication status	Published - 2007

Bibliographical note

Funding Information:
We thank the useful discussion with Dr. Y. Ni, a postdoctoral fellowship from the Department of Materials Science and Engineering, Rutgers University. The research was supported by the National Science Council, Taiwan, under the Contract Nos. NSC95-2752-M-002-006-PAE (National Taiwan University) and NSF-DMR-0405682 (Rutgers).

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

Access to Document

10.1063/1.2821838

Cite this

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title = "Magnetic nanocheckerboards with tunable sizes in the Mn-doped CoFe 2O4 spinel",

abstract = "Formation of magnetically ordered array of two types of rectangular nanorods, ∼300 nm in length and a few nanometers in size, is achieved in the Mn-doped Co Fe2 O4 spinel through chemical phase separation mediated by cooperative Jahn-Teller distortions. At room temperature, the magnetic nanorods, with composition close to Co Fe2 O4, interlace with the paramagnetic counterparts and form a highly organized checkerboard pattern in the cross section. The checkerboard size in the range of ∼13.8×7.9-∼17. 3×14.0 nm2 is tunable with composition and, particularly, with the isothermal annealing time. These three-dimensional nanocheckerboards exhibit a nearly ideal configuration for the patterned perpendicular recording medium.",

author = "Zhang, {C. L.} and Tseng, {C. M.} and Chen, {C. H.} and S. Yeo and Choi, {Y. J.} and Cheong, {S. W.}",

note = "Funding Information: We thank the useful discussion with Dr. Y. Ni, a postdoctoral fellowship from the Department of Materials Science and Engineering, Rutgers University. The research was supported by the National Science Council, Taiwan, under the Contract Nos. NSC95-2752-M-002-006-PAE (National Taiwan University) and NSF-DMR-0405682 (Rutgers).",

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AU - Zhang, C. L.

AU - Tseng, C. M.

AU - Chen, C. H.

AU - Yeo, S.

AU - Choi, Y. J.

AU - Cheong, S. W.

N1 - Funding Information: We thank the useful discussion with Dr. Y. Ni, a postdoctoral fellowship from the Department of Materials Science and Engineering, Rutgers University. The research was supported by the National Science Council, Taiwan, under the Contract Nos. NSC95-2752-M-002-006-PAE (National Taiwan University) and NSF-DMR-0405682 (Rutgers).

PY - 2007

Y1 - 2007

N2 - Formation of magnetically ordered array of two types of rectangular nanorods, ∼300 nm in length and a few nanometers in size, is achieved in the Mn-doped Co Fe2 O4 spinel through chemical phase separation mediated by cooperative Jahn-Teller distortions. At room temperature, the magnetic nanorods, with composition close to Co Fe2 O4, interlace with the paramagnetic counterparts and form a highly organized checkerboard pattern in the cross section. The checkerboard size in the range of ∼13.8×7.9-∼17. 3×14.0 nm2 is tunable with composition and, particularly, with the isothermal annealing time. These three-dimensional nanocheckerboards exhibit a nearly ideal configuration for the patterned perpendicular recording medium.

AB - Formation of magnetically ordered array of two types of rectangular nanorods, ∼300 nm in length and a few nanometers in size, is achieved in the Mn-doped Co Fe2 O4 spinel through chemical phase separation mediated by cooperative Jahn-Teller distortions. At room temperature, the magnetic nanorods, with composition close to Co Fe2 O4, interlace with the paramagnetic counterparts and form a highly organized checkerboard pattern in the cross section. The checkerboard size in the range of ∼13.8×7.9-∼17. 3×14.0 nm2 is tunable with composition and, particularly, with the isothermal annealing time. These three-dimensional nanocheckerboards exhibit a nearly ideal configuration for the patterned perpendicular recording medium.

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