Synthesis of Artificial Ordered Alloy by Monatomic Deposition and the Characterization

单原子沉积人工有序合金的合成及表征

• 批准号: 08455286
• 负责人: NAKAJIMA Hideo
• 金额: $ 4.22万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08455286/
• 关键词: artificial ordered alloy; superlattice; gold; iron; intermetallic cpmpound; 人口規則合金; 人口格子

An AuFe ordered alloy has been synthesized artificially by depositing alternately monatomiclayrs of Au and Fe. X-ray diffraction from the AuFe thin films shows definite superlattice lines corresponding to the L1_0-type ordered structure, although neither intermediate phase nor intermetallic compound is known for the Au-Fe binary equilibrium phase diagram. The thermal stability of the AuFe ordered alloy has been investigated from the decay rate of the superlattice peak intensity. After about 20 hours anneal, L1_0-type ordered phase changes to metastable disordered AuFe alloy. By further successive long anneals, the disordered phase may transform to phase separation of alphaFe and Au which corresponds to stable equilibrium phase.

通过交替沉积Au和Fe的单原子层，人工合成了AuFe有序合金。从AuFe薄膜的X射线衍射显示明确的超晶格线对应于L1_0型有序结构，虽然既不是中间相也不是金属间化合物已知的Au-Fe二元平衡相图。从超晶格峰强度的衰减速率研究了AuFe有序合金的热稳定性。退火20小时左右，L1_0型有序相转变为亚稳态无序AuFe合金。通过进一步的连续长时间退火，无序相可以转变为α Fe和Au的相分离，这对应于稳定的平衡相。

项目成果

Koki Takanashi: "A Challenge of the Limit of the Layred Structure in Metallic Superlattices" Materia Japan. 35. 1204-1207 (1996)

Koki Takanashi：“金属超晶格层状结构极限的挑战”Materia Japan。

Koki Takanashi: "Structure and Thermal Stability of Artificial L1_0-type Ordered FeAu Alloy Fabricated by Alternate Monatomic Deposition" Advances in Materials Research, Tohoku Univ.(in press).

Koki Takanashi：“交替单原子沉积法制造的人工 L1_0 型有序 FeAu 合金的结构和热稳定性”材料研究进展，东北大学（出版中）。

高梨 弘毅: "Structure and Thermal Stability of Artificial L10-type Ordered Fe Au Alloy Fabricated by Alternate Monatomic Deposition" dvances in Materials Research. (発表予定). (1998)

Hiroki Takanashi：“通过交替单原子沉积制造的人工 L10 型有序铁金合金的结构和热稳定性”进展材料研究（即将发表）。

中澤弘実: "単原子層蒸着によるAu(lll)上[Fe(nML/Au(nML)](n=1,2,3)多層膜の作製と垂直磁気異方性" 日本応用磁気学会誌. 20. 353-356 (1996)

Hiromi Nakazawa：“通过单原子层沉积和垂直磁各向异性在 Au(III) 上制备 [Fe(nML/Au(nML)] (n=1,2,3) 多层薄膜”，日本应用磁学学会杂志。 20. 353-356 (1996)

Akira Yamaguchi: "Theoretical Calculations of Elastic Properties of Metallic Superlattices" Mat.Res.Soc.Symp.Proc.458. 27-32 (1997)

Akira Yamaguchi：“金属超晶格弹性特性的理论计算”Mat.Res.Soc.Symp.Proc.458。