Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/15052
DC FieldValue
dc.titleA study on CoCrPtB/CoTb magnetically coupled media
dc.contributor.authorLIN FEIKAI
dc.date.accessioned2010-04-08T10:49:34Z
dc.date.available2010-04-08T10:49:34Z
dc.date.issued2006-03-08
dc.identifier.citationLIN FEIKAI (2006-03-08). A study on CoCrPtB/CoTb magnetically coupled media. ScholarBank@NUS Repository.
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/15052
dc.description.abstractMagnetically coupled media were proposed to overcome the thermal stability problem in future ultra-high density magnetic recording media. Two-layer structure, i.e. a CoCrPtB magnetic layer with a CoTb stabilizing layer, was used in magnetically coupled media. The perpendicular magnetic property and magnetic thermal stability of films with the above structure were studied. It was found the perpendicular growth of CoCrPtB layer was achieved and the CoTb layer was amorphous. By changing the thickness and Tb content of the CoTb stabilizing layer, the magnetic and thermal properties of the media were enhanced greatly. It was found the thermal stability factor (SF) enhanced to a value 2-2.5 times of a CoCrPtB film without the stabilizing layer. The stabilizing layer also affected the magnetic reversal process, thus the coercivity of CoCrPtB film was enhanced. Hysteresis loops with three-step magnetization switching were observed, which indicates a strong exchange coupling effect between the two layers. In this loop a strong exchange coupling constant is estimated about 1.2 erg/cm2.
dc.language.isoen
dc.subjectCoTb; CoCrPtB; thermal stability; exchange coupling; perpendicular recording; thin film;
dc.typeThesis
dc.contributor.departmentELECTRICAL & COMPUTER ENGINEERING
dc.contributor.supervisorCHONG TOW CHONG
dc.description.degreeMaster's
dc.description.degreeconferredMASTER OF ENGINEERING
dc.identifier.isiutNOT_IN_WOS
Appears in Collections:Master's Theses (Open)

Show simple item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
Lin_Fei_Kai_thesisl.pdf1.49 MBAdobe PDF

OPEN

NoneView/Download

Page view(s)

204
checked on May 17, 2019

Download(s)

239
checked on May 17, 2019

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.