Enhanced Thermal Stability in Magnetic Random-Access Memory Cells With Free Layer Composed of Multilayer Co/Pt Coupled to Co2Fe6B2 With Interfacial Perpendicular Magnetic Anisotropy
DC Field | Value | Language |
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dc.contributor.author | Beek, Jong-Ung | - |
dc.contributor.author | Jung, Sun-Hwa | - |
dc.contributor.author | Jun, Han-Sol | - |
dc.contributor.author | Ashiba, Kei | - |
dc.contributor.author | Choi, Jin-Young | - |
dc.contributor.author | Park, JEA GUN | - |
dc.date.accessioned | 2021-07-30T05:06:01Z | - |
dc.date.available | 2021-07-30T05:06:01Z | - |
dc.date.created | 2021-05-11 | - |
dc.date.issued | 2019 | - |
dc.identifier.issn | 1949-307X | - |
dc.identifier.uri | https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/2972 | - |
dc.description.abstract | A novel perpendicular spin-transfer torque magnetic random-access memory spin valve with a memory-cell size below 20 nm x 20 nm and a thermal stability factor Delta of similar to 77 (10-year retention time) was designed by ferromagnetically coupling a multiple free layer [Co/Pt](n) to Co2Fe6B2 having interfacial perpendicular magnetic anisotropy (i-PMA) instead of coupling to a conventional double i-PMA free layer (Delta = 33). Thermal stability (Delta) increased with an increase of n in the [Co(0.47nm)/Pt(0.23 nm)] n multiple free layer. In particular, Delta = 80 could be achieved with n = 4 for a 15 nm x 15 nm memory-cell size. However, the tunneling magnetoresistance (TMR) ratio, which should be above 150% to assure a reasonable sensing margin, rapidly decreased from 190% to 98% with an increase in n from 0 to 4. This decrease was associated with W and Pt atomic diffusion into the MgO tunneling barrier. Improvement in the crystallinity of the MgO tunneling barrier increased the TMR ratio to 144% for n = 4. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC | - |
dc.title | Enhanced Thermal Stability in Magnetic Random-Access Memory Cells With Free Layer Composed of Multilayer Co/Pt Coupled to Co2Fe6B2 With Interfacial Perpendicular Magnetic Anisotropy | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Park, JEA GUN | - |
dc.identifier.doi | 10.1109/LMAG.2019.2939739 | - |
dc.identifier.scopusid | 2-s2.0-85077744115 | - |
dc.identifier.wosid | 000489903600001 | - |
dc.identifier.bibliographicCitation | IEEE MAGNETICS LETTERS, v.10 | - |
dc.relation.isPartOf | IEEE MAGNETICS LETTERS | - |
dc.citation.title | IEEE MAGNETICS LETTERS | - |
dc.citation.volume | 10 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Engineering, Electrical & Electronic | - |
dc.relation.journalWebOfScienceCategory | Physics, Applied | - |
dc.subject.keywordPlus | SPIN | - |
dc.subject.keywordAuthor | Spin electronics | - |
dc.subject.keywordAuthor | spin-transfer torque magnetic random-access memory | - |
dc.subject.keywordAuthor | thermal stability | - |
dc.subject.keywordAuthor | retention time | - |
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