Low-temperature fabrication of L10 ordered FePt alloy by alternate monatomic layer deposition

T. Shima; T. Moriguchi; S. Mitani; K. Takanashi

doi:10.1063/1.1432446

Low-temperature fabrication of L1₀ ordered FePt alloy by alternate monatomic layer deposition

T. Shima, T. Moriguchi, S. Mitani, K. Takanashi

Collaborative Research Center on Energy Materials

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

241 Citations (Scopus)

Abstract

L1₀ ordered FePt alloy films with large magnetic anisotropy have been successfully prepared by alternating Fe(001) and Pt(001) monatomic layers on MgO (001) substrates at low temperatures below 230°C. In addition to the fundamental (002) peak, (001) and (003) superlattice peaks have clearly been observed in the x-ray diffraction patterns for all the samples, indicating the formation of L1₀ ordered structure. The magnetization measurements show that all the samples are perpendicularly magnetized. Large uniaxial magnetic anisotropy (K_u=3.0×10⁷erg/cc) and high chemical ordering (long-range order parameter S=0.7±0.1) have been obtained even at the substrate temperature T_s=200°C. The magnetization curves show good magnetic squareness (Mr/Ms∼0.9) for the samples grown at T_s≥160°C.

Original language	English
Pages (from-to)	288-290
Number of pages	3
Journal	Applied Physics Letters
Volume	80
Issue number	2
DOIs	https://doi.org/10.1063/1.1432446
Publication status	Published - 2002 Jan 14

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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title = "Low-temperature fabrication of L10 ordered FePt alloy by alternate monatomic layer deposition",

abstract = "L10 ordered FePt alloy films with large magnetic anisotropy have been successfully prepared by alternating Fe(001) and Pt(001) monatomic layers on MgO (001) substrates at low temperatures below 230°C. In addition to the fundamental (002) peak, (001) and (003) superlattice peaks have clearly been observed in the x-ray diffraction patterns for all the samples, indicating the formation of L10 ordered structure. The magnetization measurements show that all the samples are perpendicularly magnetized. Large uniaxial magnetic anisotropy (Ku=3.0×107erg/cc) and high chemical ordering (long-range order parameter S=0.7±0.1) have been obtained even at the substrate temperature Ts=200°C. The magnetization curves show good magnetic squareness (Mr/Ms∼0.9) for the samples grown at Ts≥160°C.",

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T1 - Low-temperature fabrication of L10 ordered FePt alloy by alternate monatomic layer deposition

AU - Shima, T.

AU - Moriguchi, T.

AU - Mitani, S.

AU - Takanashi, K.

PY - 2002/1/14

Y1 - 2002/1/14

N2 - L10 ordered FePt alloy films with large magnetic anisotropy have been successfully prepared by alternating Fe(001) and Pt(001) monatomic layers on MgO (001) substrates at low temperatures below 230°C. In addition to the fundamental (002) peak, (001) and (003) superlattice peaks have clearly been observed in the x-ray diffraction patterns for all the samples, indicating the formation of L10 ordered structure. The magnetization measurements show that all the samples are perpendicularly magnetized. Large uniaxial magnetic anisotropy (Ku=3.0×107erg/cc) and high chemical ordering (long-range order parameter S=0.7±0.1) have been obtained even at the substrate temperature Ts=200°C. The magnetization curves show good magnetic squareness (Mr/Ms∼0.9) for the samples grown at Ts≥160°C.

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