Epitaxial growth of L10-FePt/MgO/L10-FePt (0 0 1) trilayer structures

M. Hagiuda; S. Mitani; T. Seki; K. Yakushiji; T. Shima; K. Takanashi

doi:10.1016/j.jmmm.2006.10.877

Epitaxial growth of L1₀-FePt/MgO/L1₀-FePt (0 0 1) trilayer structures

M. Hagiuda, S. Mitani, T. Seki, K. Yakushiji, T. Shima, K. Takanashi

IMR - Materials Development Division

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

Epitaxial growth of L1₀-FePt/MgO/L1₀-FePt (0 0 1) trilayer structures on an Au (0 0 1) monocrystalline buffer layer was investigated. By post-annealing at 500 °C, flat Au (0 0 1) buffer layers with roughness of Ra∼0.1 nm were obtained on a 10-nm-thick Fe (0 0 1) seed layer. Despite a large lattice mismatch between L1₀-FePt and MgO (∼10%), fully epitaxial growth of L1₀-FePt/MgO/L1₀-FePt (0 0 1) trilayers was achieved on the Au buffer layer, suggesting that the combination of L1₀-FePt and MgO is useful for fabrication of perpendicularly magnetized magnetic tunnel junctions.

Original language	English
Pages (from-to)	1905-1907
Number of pages	3
Journal	Journal of Magnetism and Magnetic Materials
Volume	310
Issue number	2 SUPPL. PART 3
DOIs	https://doi.org/10.1016/j.jmmm.2006.10.877
Publication status	Published - 2007 Mar

Keywords

Epitaxial growth
FePt
L1 structure
MgO
Perpendicular magnetization
Roughness

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10.1016/j.jmmm.2006.10.877

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title = "Epitaxial growth of L10-FePt/MgO/L10-FePt (0 0 1) trilayer structures",

abstract = "Epitaxial growth of L10-FePt/MgO/L10-FePt (0 0 1) trilayer structures on an Au (0 0 1) monocrystalline buffer layer was investigated. By post-annealing at 500 °C, flat Au (0 0 1) buffer layers with roughness of Ra∼0.1 nm were obtained on a 10-nm-thick Fe (0 0 1) seed layer. Despite a large lattice mismatch between L10-FePt and MgO (∼10%), fully epitaxial growth of L10-FePt/MgO/L10-FePt (0 0 1) trilayers was achieved on the Au buffer layer, suggesting that the combination of L10-FePt and MgO is useful for fabrication of perpendicularly magnetized magnetic tunnel junctions.",

keywords = "Epitaxial growth, FePt, L1 structure, MgO, Perpendicular magnetization, Roughness",

author = "M. Hagiuda and S. Mitani and T. Seki and K. Yakushiji and T. Shima and K. Takanashi",

year = "2007",

month = mar,

doi = "10.1016/j.jmmm.2006.10.877",

language = "English",

volume = "310",

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T1 - Epitaxial growth of L10-FePt/MgO/L10-FePt (0 0 1) trilayer structures

AU - Hagiuda, M.

AU - Mitani, S.

AU - Seki, T.

AU - Yakushiji, K.

AU - Shima, T.

AU - Takanashi, K.

PY - 2007/3

Y1 - 2007/3

N2 - Epitaxial growth of L10-FePt/MgO/L10-FePt (0 0 1) trilayer structures on an Au (0 0 1) monocrystalline buffer layer was investigated. By post-annealing at 500 °C, flat Au (0 0 1) buffer layers with roughness of Ra∼0.1 nm were obtained on a 10-nm-thick Fe (0 0 1) seed layer. Despite a large lattice mismatch between L10-FePt and MgO (∼10%), fully epitaxial growth of L10-FePt/MgO/L10-FePt (0 0 1) trilayers was achieved on the Au buffer layer, suggesting that the combination of L10-FePt and MgO is useful for fabrication of perpendicularly magnetized magnetic tunnel junctions.

AB - Epitaxial growth of L10-FePt/MgO/L10-FePt (0 0 1) trilayer structures on an Au (0 0 1) monocrystalline buffer layer was investigated. By post-annealing at 500 °C, flat Au (0 0 1) buffer layers with roughness of Ra∼0.1 nm were obtained on a 10-nm-thick Fe (0 0 1) seed layer. Despite a large lattice mismatch between L10-FePt and MgO (∼10%), fully epitaxial growth of L10-FePt/MgO/L10-FePt (0 0 1) trilayers was achieved on the Au buffer layer, suggesting that the combination of L10-FePt and MgO is useful for fabrication of perpendicularly magnetized magnetic tunnel junctions.

KW - Epitaxial growth

KW - FePt

KW - L1 structure

KW - MgO

KW - Perpendicular magnetization

KW - Roughness

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DO - 10.1016/j.jmmm.2006.10.877

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SN - 0304-8853

VL - 310

SP - 1905

EP - 1907

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - 2 SUPPL. PART 3

ER -

Epitaxial growth of L1₀-FePt/MgO/L1₀-FePt (0 0 1) trilayer structures

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Keywords

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