(001) textured L1{sub 0}-FePt pseudo spin valve with TiN spacer

Journal Article · Mon Dec 19 00:00:00 EST 2011 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.3671988· OSTI ID:22027850

Ho, P ^[1]; Han, G C ^[2]; He, K H; Chow, G M; Chen, J S ^[3]

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1. Department of Materials Science and Engineering, National University of Singapore, 117576 Singapore (Singapore) and Data Storage Institute, Agency of Science, Technology and Research (A-STAR), 117608 Singapore (Singapore)
2. Data Storage Institute, Agency of Science, Technology and Research (A-STAR), 117608 Singapore (Singapore)
3. Department of Materials Science and Engineering, National University of Singapore, 117576 Singapore (Singapore)

TiN was investigated as a potential spacer material in L1{sub 0}-FePt based pseudo spin valves (PSV). PSVs with the structure MgO/L1{sub 0}-Fe{sub 50}Pt{sub 50} (20 nm)/TiN (5 nm)/L1{sub 0}-Fe{sub 50}Pt{sub 50} (x nm) were fabricated, where x was varied from 5 to 20 nm. The highest giant magnetoresistance (GMR) ratio of 0.61% was obtained for the PSV with a top L1{sub 0}-FePt thickness of 20 nm. Contributions to the GMR arose from both the spin dependent scattering at the FePt/TiN interfaces and domain wall resistivity. Magnon magnetoresistance was also observed in the fabricated PSVs.

• OSTI ID: 22027850
• Journal Information: Applied Physics Letters, Vol. 99, Issue 25; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CRYSTAL GROWTH
CRYSTAL STRUCTURE
INTERFACES
IRON ALLOYS
MAGNESIUM OXIDES
MAGNETORESISTANCE
MAGNONS
PLATINUM ALLOYS
SPIN
SPUTTERING
TEXTURE
TITANIUM NITRIDES
VALVES