Studies of the Properties of Sputtered CoAg and CoNiAg Granular Magnetic Thin Films
The observation of the magnetoresistance effect has been focussed on the studies of the giant magnetoresistance (GMR) effect, throughout the world, by researchers and scientists after its discovery from magnetic multilayer. It has later been observed in granular alloys in which nanometer-sized ma...
| Main Author: | |
|---|---|
| Format: | Thesis |
| Language: | English English |
| Published: |
2002
|
| Subjects: | |
| Online Access: | http://psasir.upm.edu.my/id/eprint/9520/ http://psasir.upm.edu.my/id/eprint/9520/1/FSAS_2002_49_A.pdf |
| _version_ | 1848841168266199040 |
|---|---|
| author | Abdullah, Huda |
| author_facet | Abdullah, Huda |
| author_sort | Abdullah, Huda |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | The observation of the magnetoresistance effect has been focussed on the
studies of the giant magnetoresistance (GMR) effect, throughout the world, by
researchers and scientists after its discovery from magnetic multilayer. It has later
been observed in granular alloys in which nanometer-sized magnetic granules such
as Co, Ni, Fe, are embedded in an immiscible metallic matrix (Ag, Cu, Au, etc.).
These magnetic alloys having GMR effect find potential applications in magnetic
field sensor and read heads.
In this work, granular thin films of CoAg and CoNiAg alloys have been
prepared using Radio frequency (RF) Magnetron sputtering technique. A split target
composed of high purity (99.99%) Co, Ni and Ag metals have been bombarded with
argon atoms to form plasma, which condensed onto the glass substrate to form thin
films of various thicknesses depending on the deposition time and RF power. The characteristics and magnetotransport properties of GMR materials based on the
CoAg and CoNiAg have been investigated. Magnetoresistance (MR) is usually
expressed as the fractional change in resistance of a specimen produced by an
applied field, GMR = MfR. For non-magnetic films MR is quite small, however the
presence of magnetic entities in the non-magnetic matrix, increases its MR .and
hence it is termed as GMR. |
| first_indexed | 2025-11-15T07:38:57Z |
| format | Thesis |
| id | upm-9520 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-15T07:38:57Z |
| publishDate | 2002 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-95202013-10-01T03:39:26Z http://psasir.upm.edu.my/id/eprint/9520/ Studies of the Properties of Sputtered CoAg and CoNiAg Granular Magnetic Thin Films Abdullah, Huda The observation of the magnetoresistance effect has been focussed on the studies of the giant magnetoresistance (GMR) effect, throughout the world, by researchers and scientists after its discovery from magnetic multilayer. It has later been observed in granular alloys in which nanometer-sized magnetic granules such as Co, Ni, Fe, are embedded in an immiscible metallic matrix (Ag, Cu, Au, etc.). These magnetic alloys having GMR effect find potential applications in magnetic field sensor and read heads. In this work, granular thin films of CoAg and CoNiAg alloys have been prepared using Radio frequency (RF) Magnetron sputtering technique. A split target composed of high purity (99.99%) Co, Ni and Ag metals have been bombarded with argon atoms to form plasma, which condensed onto the glass substrate to form thin films of various thicknesses depending on the deposition time and RF power. The characteristics and magnetotransport properties of GMR materials based on the CoAg and CoNiAg have been investigated. Magnetoresistance (MR) is usually expressed as the fractional change in resistance of a specimen produced by an applied field, GMR = MfR. For non-magnetic films MR is quite small, however the presence of magnetic entities in the non-magnetic matrix, increases its MR .and hence it is termed as GMR. 2002-05 Thesis NonPeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/9520/1/FSAS_2002_49_A.pdf Abdullah, Huda (2002) Studies of the Properties of Sputtered CoAg and CoNiAg Granular Magnetic Thin Films. Masters thesis, Universiti Putra Malaysia. Magnetoresistance Thin films - Magnetic properties English |
| spellingShingle | Magnetoresistance Thin films - Magnetic properties Abdullah, Huda Studies of the Properties of Sputtered CoAg and CoNiAg Granular Magnetic Thin Films |
| title | Studies of the Properties of Sputtered CoAg and CoNiAg Granular Magnetic Thin Films |
| title_full | Studies of the Properties of Sputtered CoAg and CoNiAg Granular Magnetic Thin Films |
| title_fullStr | Studies of the Properties of Sputtered CoAg and CoNiAg Granular Magnetic Thin Films |
| title_full_unstemmed | Studies of the Properties of Sputtered CoAg and CoNiAg Granular Magnetic Thin Films |
| title_short | Studies of the Properties of Sputtered CoAg and CoNiAg Granular Magnetic Thin Films |
| title_sort | studies of the properties of sputtered coag and coniag granular magnetic thin films |
| topic | Magnetoresistance Thin films - Magnetic properties |
| url | http://psasir.upm.edu.my/id/eprint/9520/ http://psasir.upm.edu.my/id/eprint/9520/1/FSAS_2002_49_A.pdf |