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Influence of face-centered-cubic texturing of Co2Fe6B2 pinned layer on tunneling magnetoresistance ratio decrease in Co2Fe6B2/MgO-based p-MTJ spin valves stacked with a [Co/Pd](n)-SyAF layer

Title
Influence of face-centered-cubic texturing of Co2Fe6B2 pinned layer on tunneling magnetoresistance ratio decrease in Co2Fe6B2/MgO-based p-MTJ spin valves stacked with a [Co/Pd](n)-SyAF layer
Author
박재근
Keywords
spin transfer torque; magnetic random access memory; magnetic tunnle junctions
Issue Date
2015-04
Publisher
IOP PUBLISHING LTD
Citation
NANOTECHNOLOGY, v. 26, NO 19, Page. 195702-195702
Abstract
The TMR ratio of Co2Fe6B2/MgO-based p-MTJ spin valves stacked with a [Co/Pd](n)-SyAF layer decreased rapidly when the ex situ magnetic annealing temperature (T-ex) was increased from 275 to 325 degrees C, and this decrease was associated with degradation of the Co2Fe6B2 pinned layer rather than the Co2Fe6B2 free layer. At a Tex above 325 degrees C the amorphous Co2Fe6B2 pinned layer was transformed into a face-centered-cubic (fcc) crystalline layer textured from [Co/Pd](n)-SyAF, abruptly reducing the Delta(1) coherence tunneling of perpendicular-spin-torque electrons between the (100) MgO tunneling barrier and the fcc Co2Fe6B2 pinned layer.
URI
http://iopscience.iop.org/article/10.1088/0957-4484/26/19/195702/meta;jsessionid=DF5D4D1EE86EA4689AC16B88AB376DD1.c1.iopscience.cld.iop.orghttp://hdl.handle.net/20.500.11754/23779
ISSN
0957-4484; 1361-6528
DOI
10.1088/0957-4484/26/19/195702
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ELECTRONIC ENGINEERING(융합전자공학부) > Articles
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