Unusually high coercivity and critical single-domain size of nearly monodispersed CoFe2O4 nanoparticles

C. N. Chinnasamy; B. Jeyadevan; K. Shinoda; K. Tohji; D. J. Djayaprawira; M. Takahashi; R. Justin Joseyphus; A. Narayanasamy

doi:10.1063/1.1616655

Unusually high coercivity and critical single-domain size of nearly monodispersed CoFe₂O₄ nanoparticles

C. N. Chinnasamy, B. Jeyadevan, K. Shinoda, K. Tohji, D. J. Djayaprawira, M. Takahashi, R. Justin Joseyphus, A. Narayanasamy

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Abstract

A study to investigate the coercivity and critical single-domain size of nearly monodispersed CoFe₂O₄ nanoparticles was presented. Rotational hysteresis loss (W_r) analysis demonstrated an average switching field of 17 kOe and a magnetic anisotropy field of 38 kOe for the 40 nm CoFe₂O₄ particles. The results suggested that the critical single-domain size of CoFe₂O₄ was about 40 nm.

Original language	English
Pages (from-to)	2862-2864
Number of pages	3
Journal	Applied Physics Letters
Volume	83
Issue number	14
DOIs	https://doi.org/10.1063/1.1616655
Publication status	Published - 2003 Oct 6

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title = "Unusually high coercivity and critical single-domain size of nearly monodispersed CoFe2O4 nanoparticles",

abstract = "A study to investigate the coercivity and critical single-domain size of nearly monodispersed CoFe2O4 nanoparticles was presented. Rotational hysteresis loss (Wr) analysis demonstrated an average switching field of 17 kOe and a magnetic anisotropy field of 38 kOe for the 40 nm CoFe2O4 particles. The results suggested that the critical single-domain size of CoFe2O4 was about 40 nm.",

author = "Chinnasamy, {C. N.} and B. Jeyadevan and K. Shinoda and K. Tohji and Djayaprawira, {D. J.} and M. Takahashi and {Justin Joseyphus}, R. and A. Narayanasamy",

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AU - Chinnasamy, C. N.

AU - Jeyadevan, B.

AU - Shinoda, K.

AU - Tohji, K.

AU - Djayaprawira, D. J.

AU - Takahashi, M.

AU - Justin Joseyphus, R.

AU - Narayanasamy, A.

PY - 2003/10/6

Y1 - 2003/10/6

N2 - A study to investigate the coercivity and critical single-domain size of nearly monodispersed CoFe2O4 nanoparticles was presented. Rotational hysteresis loss (Wr) analysis demonstrated an average switching field of 17 kOe and a magnetic anisotropy field of 38 kOe for the 40 nm CoFe2O4 particles. The results suggested that the critical single-domain size of CoFe2O4 was about 40 nm.

AB - A study to investigate the coercivity and critical single-domain size of nearly monodispersed CoFe2O4 nanoparticles was presented. Rotational hysteresis loss (Wr) analysis demonstrated an average switching field of 17 kOe and a magnetic anisotropy field of 38 kOe for the 40 nm CoFe2O4 particles. The results suggested that the critical single-domain size of CoFe2O4 was about 40 nm.

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Unusually high coercivity and critical single-domain size of nearly monodispersed CoFe₂O₄ nanoparticles

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