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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/4476/1/14%2520CSirisathitkul.pdf
http://journalarticle.ukm.my/4476/
http://www.ukm.my/jsm/
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spelling my-ukm.journal.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/
institution Universiti Kebangsaan Malaysia
building Perpustakaan Tun Sri Lanang Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Kebangsaan Malaysia
content_source UKM Journal Article Repository
url_provider http://journalarticle.ukm.my/
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/4476/1/14%2520CSirisathitkul.pdf
http://journalarticle.ukm.my/4476/
http://www.ukm.my/jsm/
_version_ 1643736091018133504
score 13.211869

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