Exotic thin films made from cobalt ferrite

A. Lisfi; C.M. Williams; A. Johnson; P. Chang; H. Corcoran; L.T. Nguyen; J.C. Lodder; W. Morgan

Exotic thin films made from cobalt ferrite

A. Lisfi
, C.M. Williams
, A. Johnson
, P. Chang
, H. Corcoran
, L.T. Nguyen
, J.C. Lodder
, W. Morgan

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

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Abstract

Epitaxial CoFe2O4 thin films have been grown by PLD on (100) MgO substrate. Two types of spin-reorientation have been observed in such films upon annealing or increasing the film-thickness. In the as-deposited layers and at low thickness the easy axis is confined to the normal to the film plane whereas at large thickness the film plane becomes the preferential direction of the magnetization. On the other hand annealing induces a reorientations is explained in term of competition between stress and magnetocrystalline anisotropies. In the as-deposited state the tensile stress induces a huge perpendicular anisotropy, dominating the in-plane magnetocrystalline component. However annealing or increasing the film thickness releases the stress and allows the in-plane magnetocrystalline anisotropy to take the lead.

Original language	English
Title of host publication	9th International Conference on Ferrites (ICF9)
Subtitle of host publication	Proceedings San Francisco, California, 2004
Editors	R.F. Soohoo
Publisher	American Ceramic Society
Pages	227-234
Number of pages	8
ISBN (Print)	978-1-57498-218-3
Publication status	Published - 2005
Event	9th International Conference on Ferrites, ICF 2004 - San Francisco, United States Duration: 22 Aug 2004 → 27 Aug 2004 Conference number: 9

Conference

Conference	9th International Conference on Ferrites, ICF 2004
Abbreviated title	ICF9
Country/Territory	United States
City	San Francisco
Period	22/08/04 → 27/08/04

Keywords

SMI-EXP: EXPERIMENTAL TECHNIQUES
SMI-MAT: MATERIALS

Cite this

@inproceedings{16013ae211d34614a90980e512734c73,

title = "Exotic thin films made from cobalt ferrite",

abstract = "Epitaxial CoFe2O4 thin films have been grown by PLD on (100) MgO substrate. Two types of spin-reorientation have been observed in such films upon annealing or increasing the film-thickness. In the as-deposited layers and at low thickness the easy axis is confined to the normal to the film plane whereas at large thickness the film plane becomes the preferential direction of the magnetization. On the other hand annealing induces a reorientations is explained in term of competition between stress and magnetocrystalline anisotropies. In the as-deposited state the tensile stress induces a huge perpendicular anisotropy, dominating the in-plane magnetocrystalline component. However annealing or increasing the film thickness releases the stress and allows the in-plane magnetocrystalline anisotropy to take the lead.",

keywords = "SMI-EXP: EXPERIMENTAL TECHNIQUES, SMI-MAT: MATERIALS",

author = "A. Lisfi and C.M. Williams and A. Johnson and P. Chang and H. Corcoran and L.T. Nguyen and J.C. Lodder and W. Morgan",

year = "2005",

language = "English",

isbn = "978-1-57498-218-3",

pages = "227--234",

editor = "R.F. Soohoo",

booktitle = "9th International Conference on Ferrites (ICF9)",

publisher = "American Ceramic Society",

address = "United States",

note = "9th International Conference on Ferrites, ICF 2004, ICF9 ; Conference date: 22-08-2004 Through 27-08-2004",

}

Lisfi, A, Williams, CM, Johnson, A, Chang, P, Corcoran, H, Nguyen, LT, Lodder, JC & Morgan, W 2005, Exotic thin films made from cobalt ferrite. in RF Soohoo (ed.), 9th International Conference on Ferrites (ICF9): Proceedings San Francisco, California, 2004. American Ceramic Society, pp. 227-234, 9th International Conference on Ferrites, ICF 2004, San Francisco, California, United States, 22/08/04.

TY - GEN

T1 - Exotic thin films made from cobalt ferrite

AU - Lisfi, A.

AU - Williams, C.M.

AU - Johnson, A.

AU - Chang, P.

AU - Corcoran, H.

AU - Nguyen, L.T.

AU - Lodder, J.C.

AU - Morgan, W.

N1 - Conference code: 9

PY - 2005

Y1 - 2005

N2 - Epitaxial CoFe2O4 thin films have been grown by PLD on (100) MgO substrate. Two types of spin-reorientation have been observed in such films upon annealing or increasing the film-thickness. In the as-deposited layers and at low thickness the easy axis is confined to the normal to the film plane whereas at large thickness the film plane becomes the preferential direction of the magnetization. On the other hand annealing induces a reorientations is explained in term of competition between stress and magnetocrystalline anisotropies. In the as-deposited state the tensile stress induces a huge perpendicular anisotropy, dominating the in-plane magnetocrystalline component. However annealing or increasing the film thickness releases the stress and allows the in-plane magnetocrystalline anisotropy to take the lead.

AB - Epitaxial CoFe2O4 thin films have been grown by PLD on (100) MgO substrate. Two types of spin-reorientation have been observed in such films upon annealing or increasing the film-thickness. In the as-deposited layers and at low thickness the easy axis is confined to the normal to the film plane whereas at large thickness the film plane becomes the preferential direction of the magnetization. On the other hand annealing induces a reorientations is explained in term of competition between stress and magnetocrystalline anisotropies. In the as-deposited state the tensile stress induces a huge perpendicular anisotropy, dominating the in-plane magnetocrystalline component. However annealing or increasing the film thickness releases the stress and allows the in-plane magnetocrystalline anisotropy to take the lead.

KW - SMI-EXP: EXPERIMENTAL TECHNIQUES

KW - SMI-MAT: MATERIALS

M3 - Conference contribution

SN - 978-1-57498-218-3

SP - 227

EP - 234

BT - 9th International Conference on Ferrites (ICF9)

A2 - Soohoo, R.F.

PB - American Ceramic Society

T2 - 9th International Conference on Ferrites, ICF 2004

Y2 - 22 August 2004 through 27 August 2004

ER -

Exotic thin films made from cobalt ferrite

Abstract

Conference

Keywords

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Cite this