{"id":{"repo_id":"nus","oai_identifier":"oai:scholarbank.nus.edu.sg:10635/12899"},"canonical_url":"https://search.dev.ndltd.org/etd/nus/oai:scholarbank.nus.edu.sg:10635/12899","repository":{"repo_id":"nus","name":"National University of Singapore","base_url":"https://scholarbank.nus.edu.sg/oai/request"},"display":{"title":"Effects of AG on structural and magnetic properties of FePt thin films","abstract":"In order to improve structural and magnetic performance, Ag was added into perpendicular FePt thin films by cosputtering and sequential sputtering. Cosputtered with Ag, FePt grain size and magnetic exchange coupling were reduced with increasing Ag content. A study on alloying of FePt-Ag indicated that most Ag atoms formed a separate phase from FePt. The coercivity enhancement was associated with the pinning effect of Ag and improvement in ordering.In FePt/Ag/FePt sequential deposition, Ag diffused throughout the FePt film with predominant segregation to the film surface. As a result, media noise was reduced and SNR was improved.Ag could be used as underlayer to promote FePt ordering. Film structure and magnetic properties closely depended on deposition conditions and the thickness of Ag layer. Ag may be a promising candidate for heat sink layer in FePt HAMR system because of its close lattice mismatch with FePt and good thermal conductivity.","abstract_html":"In order to improve structural and magnetic performance, Ag was added into perpendicular FePt thin films by cosputtering and sequential sputtering. Cosputtered with Ag, FePt grain size and magnetic exchange coupling were reduced with increasing Ag content. A study on alloying of FePt-Ag indicated that most Ag atoms formed a separate phase from FePt. The coercivity enhancement was associated with the pinning effect of Ag and improvement in ordering.In FePt/Ag/FePt sequential deposition, Ag diffused throughout the FePt film with predominant segregation to the film surface. As a result, media noise was reduced and SNR was improved.Ag could be used as underlayer to promote FePt ordering. Film structure and magnetic properties closely depended on deposition conditions and the thickness of Ag layer. Ag may be a promising candidate for heat sink layer in FePt HAMR system because of its close lattice mismatch with FePt and good thermal conductivity.","abstract_has_math":false,"creators":["ZHOU YONGZHONG"],"institution":null,"degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2009,"date_issued":"2009-02-04","date_published":"2009-02-04","updated_at":"2026-07-24T03:31:38Z","subjects":["FePt, Perpendicular Magnetic Recording, High Anisotropy, Thin Film, Ordering, Texture"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":null,"outbound_label":null,"outbound_source":null},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["ZHOU YONGZHONG"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.issued","label":"Date","values":["2009-02-04"]},{"key":"dc:relation.isreferencedby","label":"Dc Relation Isreferencedby","values":["https://scholarbank.nus.edu.sg/handle/10635/12899"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["FePt, Perpendicular Magnetic Recording, High Anisotropy, Thin Film, Ordering, Texture"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://scholarbank.nus.edu.sg/bitstreams/6bf9ca56-0739-432e-a40c-6aacfa04cf21/download"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["In order to improve structural and magnetic performance, Ag was added into perpendicular FePt thin films by cosputtering and sequential sputtering. Cosputtered with Ag, FePt grain size and magnetic exchange coupling were reduced with increasing Ag content. A study on alloying of FePt-Ag indicated that most Ag atoms formed a separate phase from FePt. The coercivity enhancement was associated with the pinning effect of Ag and improvement in ordering.In FePt/Ag/FePt sequential deposition, Ag diffused throughout the FePt film with predominant segregation to the film surface. As a result, media noise was reduced and SNR was improved.Ag could be used as underlayer to promote FePt ordering. Film structure and magnetic properties closely depended on deposition conditions and the thickness of Ag layer. Ag may be a promising candidate for heat sink layer in FePt HAMR system because of its close lattice mismatch with FePt and good thermal conductivity."]},{"key":"dc:format.checksum.md5","label":"Dc Format Checksum Md5","values":["f0fda98964aaf434e2083e49483de3ff","6c9d4b0f5a5bae369fd240338e214b48"]},{"key":"dc:title","label":"Title","values":["Effects of AG on structural and magnetic properties of FePt thin films"]}]}],"canonical_facts":{"dc:creator":["ZHOU YONGZHONG"],"dc:date.issued":["2009-02-04"],"dc:description.abstract":["In order to improve structural and magnetic performance, Ag was added into perpendicular FePt thin films by cosputtering and sequential sputtering. Cosputtered with Ag, FePt grain size and magnetic exchange coupling were reduced with increasing Ag content. A study on alloying of FePt-Ag indicated that most Ag atoms formed a separate phase from FePt. The coercivity enhancement was associated with the pinning effect of Ag and improvement in ordering.In FePt/Ag/FePt sequential deposition, Ag diffused throughout the FePt film with predominant segregation to the film surface. As a result, media noise was reduced and SNR was improved.Ag could be used as underlayer to promote FePt ordering. Film structure and magnetic properties closely depended on deposition conditions and the thickness of Ag layer. Ag may be a promising candidate for heat sink layer in FePt HAMR system because of its close lattice mismatch with FePt and good thermal conductivity."],"dc:format.checksum.md5":["f0fda98964aaf434e2083e49483de3ff","6c9d4b0f5a5bae369fd240338e214b48"],"dc:identifier.uri":["https://scholarbank.nus.edu.sg/bitstreams/6bf9ca56-0739-432e-a40c-6aacfa04cf21/download"],"dc:relation.isreferencedby":["https://scholarbank.nus.edu.sg/handle/10635/12899"],"dc:subject":["FePt, Perpendicular Magnetic Recording, High Anisotropy, Thin Film, Ordering, Texture"],"dc:title":["Effects of AG on structural and magnetic properties of FePt thin films"],"dc:type":["Thesis"]},"updated_at":"2026-07-24T03:31:38Z"}