High-resolution transmission electron microscopy analysis of L10 ordering process in Fe/Pd thin layers

András Kovács; Kazuhisa Sato; Yoshihiko Hirotsu

doi:10.1063/1.2826632

High-resolution transmission electron microscopy analysis of L1₀ ordering process in Fe/Pd thin layers

András Kovács, Kazuhisa Sato, Yoshihiko Hirotsu

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16 Citations (Scopus)

Abstract

The hard magnetic L 10 ordered phase formation in thin Pd and Fe bilayers prepared on MgO (001) substrate has been investigated by transmission electron microscopy using in situ annealing. The structures of as-deposited Fe/Pd and Pd/MgO interfaces were characterized by high-resolution transmission electron microscopy. Fast intermixing of Fe and Pd layers and immediate L 10 phase formation within the alloyed area was found at 673 K. The high-resolution observations indicated that the ordered region of the L 10 -FePd phase was formed in dispersed areas without a predetermined nucleation site. At 773 K, the growing ordered areas occasionally formed antiphase boundaries between the adjacent parts. The ordered L 10 -FePd thin layer contained translational domains with tetragonal c axis perpendicular to the substrate.

Original language	English
Article number	123512
Journal	Journal of Applied Physics
Volume	102
Issue number	12
DOIs	https://doi.org/10.1063/1.2826632
Publication status	Published - 2007

ASJC Scopus subject areas

Physics and Astronomy(all)

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title = "High-resolution transmission electron microscopy analysis of L10 ordering process in Fe/Pd thin layers",

abstract = "The hard magnetic L 10 ordered phase formation in thin Pd and Fe bilayers prepared on MgO (001) substrate has been investigated by transmission electron microscopy using in situ annealing. The structures of as-deposited Fe/Pd and Pd/MgO interfaces were characterized by high-resolution transmission electron microscopy. Fast intermixing of Fe and Pd layers and immediate L 10 phase formation within the alloyed area was found at 673 K. The high-resolution observations indicated that the ordered region of the L 10 -FePd phase was formed in dispersed areas without a predetermined nucleation site. At 773 K, the growing ordered areas occasionally formed antiphase boundaries between the adjacent parts. The ordered L 10 -FePd thin layer contained translational domains with tetragonal c axis perpendicular to the substrate.",

author = "Andr{\'a}s Kov{\'a}cs and Kazuhisa Sato and Yoshihiko Hirotsu",

note = "Funding Information: This study was supported by the Ministry of Education, Culture, Sports, Science and Technology, Japan, Grant-in-Aid for Scientific Research (S) (No. 16106008). ",

year = "2007",

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language = "English",

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T1 - High-resolution transmission electron microscopy analysis of L10 ordering process in Fe/Pd thin layers

AU - Kovács, András

AU - Sato, Kazuhisa

AU - Hirotsu, Yoshihiko

N1 - Funding Information: This study was supported by the Ministry of Education, Culture, Sports, Science and Technology, Japan, Grant-in-Aid for Scientific Research (S) (No. 16106008).

PY - 2007

Y1 - 2007

N2 - The hard magnetic L 10 ordered phase formation in thin Pd and Fe bilayers prepared on MgO (001) substrate has been investigated by transmission electron microscopy using in situ annealing. The structures of as-deposited Fe/Pd and Pd/MgO interfaces were characterized by high-resolution transmission electron microscopy. Fast intermixing of Fe and Pd layers and immediate L 10 phase formation within the alloyed area was found at 673 K. The high-resolution observations indicated that the ordered region of the L 10 -FePd phase was formed in dispersed areas without a predetermined nucleation site. At 773 K, the growing ordered areas occasionally formed antiphase boundaries between the adjacent parts. The ordered L 10 -FePd thin layer contained translational domains with tetragonal c axis perpendicular to the substrate.

AB - The hard magnetic L 10 ordered phase formation in thin Pd and Fe bilayers prepared on MgO (001) substrate has been investigated by transmission electron microscopy using in situ annealing. The structures of as-deposited Fe/Pd and Pd/MgO interfaces were characterized by high-resolution transmission electron microscopy. Fast intermixing of Fe and Pd layers and immediate L 10 phase formation within the alloyed area was found at 673 K. The high-resolution observations indicated that the ordered region of the L 10 -FePd phase was formed in dispersed areas without a predetermined nucleation site. At 773 K, the growing ordered areas occasionally formed antiphase boundaries between the adjacent parts. The ordered L 10 -FePd thin layer contained translational domains with tetragonal c axis perpendicular to the substrate.

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