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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| Format: | Article |
| Language: | English |
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Universiti Kebangsaan Malaysia
2012
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| Online Access: | http://journalarticle.ukm.my/4476/1/14%2520CSirisathitkul.pdf |
| _version_ | 1796928083559710720 |
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| author | Sirisathitkul, C Pansong, Y Rattanasuporn, S |
| author_facet | Sirisathitkul, C Pansong, Y Rattanasuporn, S |
| author_sort | Sirisathitkul, C |
| collection | UKM |
| 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). |
| first_indexed | 2024-03-06T03:53:54Z |
| format | Article |
| id | ukm.eprints-4476 |
| institution | Universiti Kebangsaan Malaysia |
| language | English |
| last_indexed | 2024-03-06T03:53:54Z |
| publishDate | 2012 |
| publisher | Universiti Kebangsaan Malaysia |
| record_format | dspace |
| spelling | ukm.eprints-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/ |
| spellingShingle | Sirisathitkul, C Pansong, Y Rattanasuporn, S Longitudinal and polar MOKE magnetometry of magnetoresistive cobalt thin films prepared by thermal evaporation |
| title | 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_short | 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 |
| url | http://journalarticle.ukm.my/4476/1/14%2520CSirisathitkul.pdf |
| work_keys_str_mv | AT sirisathitkulc longitudinalandpolarmokemagnetometryofmagnetoresistivecobaltthinfilmspreparedbythermalevaporation AT pansongy longitudinalandpolarmokemagnetometryofmagnetoresistivecobaltthinfilmspreparedbythermalevaporation AT rattanasuporns longitudinalandpolarmokemagnetometryofmagnetoresistivecobaltthinfilmspreparedbythermalevaporation |