Longitudinal and polar MOKE magnetometry of magnetoresistive cobalt thin films prepared by thermal evaporation

Cobalt films of thickness 21, 29 and 68 nm were prepared by thermal evaporation with a deposition rate around 0.3 nm/s. Their hysteresis loops from longitudinal and polar magneto-optic Kerr effect (MOKE) magnetometry differed from typical characteristics of uniaxial magnetic anisotropy but still ind...

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Main Authors:	Sirisathitkul, C, Pansong, Y, Rattanasuporn, S
Format:	Article
Language:	English
Published:	Universiti Kebangsaan Malaysia 2012
Online Access:	http://journalarticle.ukm.my/4476/ http://journalarticle.ukm.my/4476/ http://journalarticle.ukm.my/4476/1/14%2520CSirisathitkul.pdf

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recordtype	eprints
spelling	ukm-44762016-12-14T06:36:08Z http://journalarticle.ukm.my/4476/ Longitudinal and polar MOKE magnetometry of magnetoresistive cobalt thin films prepared by thermal evaporation Sirisathitkul, C Pansong, Y Rattanasuporn, S Cobalt films of thickness 21, 29 and 68 nm were prepared by thermal evaporation with a deposition rate around 0.3 nm/s. Their hysteresis loops from longitudinal and polar magneto-optic Kerr effect (MOKE) magnetometry differed from typical characteristics of uniaxial magnetic anisotropy but still indicated the preference of in-plane anisotropy over perpendicular anisotropy. The longitudinal hysteresis loop of the 68 nm-thick film was decidedly in a transcritical state signified by an enhanced coercive field. Changing the angle (θ) between the 2500 Oe-magnetic field and the current gave rise to the change in electrical resistance (Rθ) of 29 nm-thick film and the plot between Rθ and cos2θ could be linearly fitted. The changes in resistance due to this anisotropic magnetoresistance (AMR) effect ranged from -0.08 % (θ = 90º) to +0.04 % (θ = 0º). Universiti Kebangsaan Malaysia 2012-05 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/4476/1/14%2520CSirisathitkul.pdf Sirisathitkul, C and Pansong, Y and Rattanasuporn, S (2012) Longitudinal and polar MOKE magnetometry of magnetoresistive cobalt thin films prepared by thermal evaporation. Sains Malaysiana, 41 (5). pp. 617-621. ISSN 0126-6039 http://www.ukm.my/jsm/
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
description	Cobalt films of thickness 21, 29 and 68 nm were prepared by thermal evaporation with a deposition rate around 0.3 nm/s. Their hysteresis loops from longitudinal and polar magneto-optic Kerr effect (MOKE) magnetometry differed from typical characteristics of uniaxial magnetic anisotropy but still indicated the preference of in-plane anisotropy over perpendicular anisotropy. The longitudinal hysteresis loop of the 68 nm-thick film was decidedly in a transcritical state signified by an enhanced coercive field. Changing the angle (θ) between the 2500 Oe-magnetic field and the current gave rise to the change in electrical resistance (Rθ) of 29 nm-thick film and the plot between Rθ and cos2θ could be linearly fitted. The changes in resistance due to this anisotropic magnetoresistance (AMR) effect ranged from -0.08 % (θ = 90º) to +0.04 % (θ = 0º).
format	Article
author	Sirisathitkul, C Pansong, Y Rattanasuporn, S
spellingShingle	Sirisathitkul, C Pansong, Y Rattanasuporn, S Longitudinal and polar MOKE magnetometry of magnetoresistive cobalt thin films prepared by thermal evaporation
author_facet	Sirisathitkul, C Pansong, Y Rattanasuporn, S
author_sort	Sirisathitkul, C
title	Longitudinal and polar MOKE magnetometry of magnetoresistive cobalt thin films prepared by thermal evaporation
title_short	Longitudinal and polar MOKE magnetometry of magnetoresistive cobalt thin films prepared by thermal evaporation
title_full	Longitudinal and polar MOKE magnetometry of magnetoresistive cobalt thin films prepared by thermal evaporation
title_fullStr	Longitudinal and polar MOKE magnetometry of magnetoresistive cobalt thin films prepared by thermal evaporation
title_full_unstemmed	Longitudinal and polar MOKE magnetometry of magnetoresistive cobalt thin films prepared by thermal evaporation
title_sort	longitudinal and polar moke magnetometry of magnetoresistive cobalt thin films prepared by thermal evaporation
publisher	Universiti Kebangsaan Malaysia
publishDate	2012
url	http://journalarticle.ukm.my/4476/ http://journalarticle.ukm.my/4476/ http://journalarticle.ukm.my/4476/1/14%2520CSirisathitkul.pdf
first_indexed	2023-09-18T19:41:39Z
last_indexed	2023-09-18T19:41:39Z
_version_	1777405630075633664

Longitudinal and polar MOKE magnetometry of magnetoresistive cobalt thin films prepared by thermal evaporation

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