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

Research output: Contribution to journalArticle

21 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 languageEnglish
Article number233110
JournalApplied Physics Letters
Volume91
Issue number23
DOIs
Publication statusPublished - 2007 Dec 14

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nanorods
spinel
recording
annealing
cross sections
room temperature
configurations

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Zhang, C. L. ; Tseng, C. M. ; Chen, C. H. ; Yeo, S. ; Choi, Y. J. ; Cheong, S. W. / Magnetic nanocheckerboards with tunable sizes in the Mn-doped CoFe 2O4 spinel. In: Applied Physics Letters. 2007 ; Vol. 91, No. 23.
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Magnetic nanocheckerboards with tunable sizes in the Mn-doped CoFe 2O4 spinel. / Zhang, C. L.; Tseng, C. M.; Chen, C. H.; Yeo, S.; Choi, Y. J.; Cheong, S. W.

In: Applied Physics Letters, Vol. 91, No. 23, 233110, 14.12.2007.

Research output: Contribution to journalArticle

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AU - Zhang, C. L.

AU - Tseng, C. M.

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AU - Choi, Y. J.

AU - Cheong, S. W.

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