Co2Fe6B2/MgO-based perpendicular spin-transfer-torque magnetic-tunnel-junction spin-valve without [Co/Pt](n) lower synthetic-antiferromagnetic layer
- Authors
- Lee, Seung-Eun; Shim, Tae-Hun; Park, Jea-Gun
- Issue Date
- Nov-2015
- Publisher
- IOP PUBLISHING LTD
- Keywords
- magnetic-tunnel-junction; perpendicular-spin-transfer-torque-magnetic-random-access-memory; synthetic-antiferromagnetic; tunneling magneto-resistance ratio; exchange field
- Citation
- NANOTECHNOLOGY, v.26, no.47, pp.1 - 7
- Indexed
- SCIE
SCOPUS
- Journal Title
- NANOTECHNOLOGY
- Volume
- 26
- Number
- 47
- Start Page
- 1
- End Page
- 7
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/156034
- DOI
- 10.1088/0957-4484/26/47/475705
- ISSN
- 0957-4484
- Abstract
- We design a Co2Fe6B2/MgO-based p-MTJ spin-valve without a [Co/Pt](n) lower synthetic-antiferromagnetic (SyAF) layer to greatly reduce the 12-inch wafer fabrication cost of the p-MTJ spin-valve. This spin-valve achieve a tunneling magnetoresistance (TMR) of 158% and an exchange field (H-ex) of 1.4 kOe at an ex situ annealing temperature of >350 degrees C, which ensures writing error immunity. In particular, the TMR ratio strongly depends on the body-center-cubic capping-layer nanoscale thickness (t(bcc)), i.e., the TMR ratio peaks at t(bcc) = 0.6 nm.
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