Unusually high coercivity at room temperature in CoFe2O4 nanoparticles

C. N. Chinnasamy; B. Jeyadevan; O. Perales-Perez; Kazuyuki Tohji; K. Shinoda; A. Kasuya

doi:10.1109/INTMAG.2002.1001492

Unusually high coercivity at room temperature in CoFe₂O₄ nanoparticles

C. N. Chinnasamy, B. Jeyadevan, O. Perales-Perez, Kazuyuki Tohji, K. Shinoda, A. Kasuya

Cross Fertilization Division

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Preparing high coercivity CoFe₂O₄ nanoparticles suitable for high-density recording is still a challenge. The theoretical values for a random system of spherical, non-interacting single-domain CoFe₂O₄ particles with cubic anisotropy have been predicted to be: M_s (300 K)=80.8 emu/gm, H_c(300 K)=5.3 kOe and M_r/M_s=0.83. Here, for the first time, we report the synthesis of CoFe₂O₄ nanoparticles of about 40 nm with unusual high coercivity of 4.3 kOe at room temperature (RT).

Original language	English
Title of host publication	INTERMAG Europe 2002 - IEEE International Magnetics Conference
Editors	J. Fidler, B. Hillebrands, C. Ross, D. Weller, L. Folks, E. Hill, M. Vazquez Villalabeitia, J. A. Bain, Jo De Boeck, R. Wood
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	0780373650, 9780780373655
DOIs	https://doi.org/10.1109/INTMAG.2002.1001492
Publication status	Published - 2002 Jan 1
Event	2002 IEEE International Magnetics Conference, INTERMAG Europe 2002 - Amsterdam, Netherlands Duration: 2002 Apr 28 → 2002 May 2

Publication series

Name	INTERMAG Europe 2002 - IEEE International Magnetics Conference

Other

Other	2002 IEEE International Magnetics Conference, INTERMAG Europe 2002
Country/Territory	Netherlands
City	Amsterdam
Period	02/4/28 → 02/5/2

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering
Surfaces, Coatings and Films

Access to Document

10.1109/INTMAG.2002.1001492

Cite this

Chinnasamy, C. N., Jeyadevan, B., Perales-Perez, O., Tohji, K., Shinoda, K., & Kasuya, A. (2002). Unusually high coercivity at room temperature in CoFe₂O₄ nanoparticles. In J. Fidler, B. Hillebrands, C. Ross, D. Weller, L. Folks, E. Hill, M. Vazquez Villalabeitia, J. A. Bain, J. De Boeck, & R. Wood (Eds.), INTERMAG Europe 2002 - IEEE International Magnetics Conference [1001492] (INTERMAG Europe 2002 - IEEE International Magnetics Conference). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/INTMAG.2002.1001492

Unusually high coercivity at room temperature in CoFe₂O₄ nanoparticles. / Chinnasamy, C. N.; Jeyadevan, B.; Perales-Perez, O. et al.

INTERMAG Europe 2002 - IEEE International Magnetics Conference. ed. / J. Fidler; B. Hillebrands; C. Ross; D. Weller; L. Folks; E. Hill; M. Vazquez Villalabeitia; J. A. Bain; Jo De Boeck; R. Wood. Institute of Electrical and Electronics Engineers Inc., 2002. 1001492 (INTERMAG Europe 2002 - IEEE International Magnetics Conference).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Chinnasamy, CN, Jeyadevan, B, Perales-Perez, O, Tohji, K, Shinoda, K & Kasuya, A 2002, Unusually high coercivity at room temperature in CoFe₂O₄ nanoparticles. in J Fidler, B Hillebrands, C Ross, D Weller, L Folks, E Hill, M Vazquez Villalabeitia, JA Bain, J De Boeck & R Wood (eds), INTERMAG Europe 2002 - IEEE International Magnetics Conference., 1001492, INTERMAG Europe 2002 - IEEE International Magnetics Conference, Institute of Electrical and Electronics Engineers Inc., 2002 IEEE International Magnetics Conference, INTERMAG Europe 2002, Amsterdam, Netherlands, 02/4/28. https://doi.org/10.1109/INTMAG.2002.1001492

Chinnasamy CN, Jeyadevan B, Perales-Perez O, Tohji K, Shinoda K, Kasuya A. Unusually high coercivity at room temperature in CoFe₂O₄ nanoparticles. In Fidler J, Hillebrands B, Ross C, Weller D, Folks L, Hill E, Vazquez Villalabeitia M, Bain JA, De Boeck J, Wood R, editors, INTERMAG Europe 2002 - IEEE International Magnetics Conference. Institute of Electrical and Electronics Engineers Inc. 2002. 1001492. (INTERMAG Europe 2002 - IEEE International Magnetics Conference). doi: 10.1109/INTMAG.2002.1001492

Chinnasamy, C. N. ; Jeyadevan, B. ; Perales-Perez, O. et al. / Unusually high coercivity at room temperature in CoFe₂O₄ nanoparticles. INTERMAG Europe 2002 - IEEE International Magnetics Conference. editor / J. Fidler ; B. Hillebrands ; C. Ross ; D. Weller ; L. Folks ; E. Hill ; M. Vazquez Villalabeitia ; J. A. Bain ; Jo De Boeck ; R. Wood. Institute of Electrical and Electronics Engineers Inc., 2002. (INTERMAG Europe 2002 - IEEE International Magnetics Conference).

@inproceedings{c65358f4a2814f6fafb148447b7e73f5,

title = "Unusually high coercivity at room temperature in CoFe2O4 nanoparticles",

abstract = "Preparing high coercivity CoFe2O4 nanoparticles suitable for high-density recording is still a challenge. The theoretical values for a random system of spherical, non-interacting single-domain CoFe2O4 particles with cubic anisotropy have been predicted to be: Ms (300 K)=80.8 emu/gm, Hc(300 K)=5.3 kOe and Mr/Ms=0.83. Here, for the first time, we report the synthesis of CoFe2O4 nanoparticles of about 40 nm with unusual high coercivity of 4.3 kOe at room temperature (RT).",

author = "Chinnasamy, {C. N.} and B. Jeyadevan and O. Perales-Perez and Kazuyuki Tohji and K. Shinoda and A. Kasuya",

year = "2002",

month = jan,

day = "1",

doi = "10.1109/INTMAG.2002.1001492",

language = "English",

series = "INTERMAG Europe 2002 - IEEE International Magnetics Conference",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

editor = "J. Fidler and B. Hillebrands and C. Ross and D. Weller and L. Folks and E. Hill and {Vazquez Villalabeitia}, M. and Bain, {J. A.} and {De Boeck}, Jo and R. Wood",

booktitle = "INTERMAG Europe 2002 - IEEE International Magnetics Conference",

note = "2002 IEEE International Magnetics Conference, INTERMAG Europe 2002 ; Conference date: 28-04-2002 Through 02-05-2002",

}

TY - GEN

T1 - Unusually high coercivity at room temperature in CoFe2O4 nanoparticles

AU - Chinnasamy, C. N.

AU - Jeyadevan, B.

AU - Perales-Perez, O.

AU - Tohji, Kazuyuki

AU - Shinoda, K.

AU - Kasuya, A.

PY - 2002/1/1

Y1 - 2002/1/1

N2 - Preparing high coercivity CoFe2O4 nanoparticles suitable for high-density recording is still a challenge. The theoretical values for a random system of spherical, non-interacting single-domain CoFe2O4 particles with cubic anisotropy have been predicted to be: Ms (300 K)=80.8 emu/gm, Hc(300 K)=5.3 kOe and Mr/Ms=0.83. Here, for the first time, we report the synthesis of CoFe2O4 nanoparticles of about 40 nm with unusual high coercivity of 4.3 kOe at room temperature (RT).

AB - Preparing high coercivity CoFe2O4 nanoparticles suitable for high-density recording is still a challenge. The theoretical values for a random system of spherical, non-interacting single-domain CoFe2O4 particles with cubic anisotropy have been predicted to be: Ms (300 K)=80.8 emu/gm, Hc(300 K)=5.3 kOe and Mr/Ms=0.83. Here, for the first time, we report the synthesis of CoFe2O4 nanoparticles of about 40 nm with unusual high coercivity of 4.3 kOe at room temperature (RT).

UR - http://www.scopus.com/inward/record.url?scp=85017260861&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85017260861&partnerID=8YFLogxK

U2 - 10.1109/INTMAG.2002.1001492

DO - 10.1109/INTMAG.2002.1001492

M3 - Conference contribution

AN - SCOPUS:85017260861

T3 - INTERMAG Europe 2002 - IEEE International Magnetics Conference

BT - INTERMAG Europe 2002 - IEEE International Magnetics Conference

A2 - Fidler, J.

A2 - Hillebrands, B.

A2 - Ross, C.

A2 - Weller, D.

A2 - Folks, L.

A2 - Hill, E.

A2 - Vazquez Villalabeitia, M.

A2 - Bain, J. A.

A2 - De Boeck, Jo

A2 - Wood, R.

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 2002 IEEE International Magnetics Conference, INTERMAG Europe 2002

Y2 - 28 April 2002 through 2 May 2002

ER -