Manipulation of ordered layered structures by interface-assisted ion-beam mixing in immiscible Ag-Co and Ag-Ni systems

被引：43
作者：
Li, ZC
Yu, DP
Liu, BX [1 ]
机构：
[1] Tsing Hua Univ, Dept Mat Sci & Engn, Adv Mat Lab, Beijing 100084, Peoples R China
[2] Peking Univ, Lab Transmiss Electron Microscopy, Beijing 100875, Peoples R China
来源：
PHYSICAL REVIEW B | 2002年 / 65卷 / 24期
关键词：
D O I：
10.1103/PhysRevB.65.245403
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Artificial ordered layered structures were grown in the nanosized Ag-Co and Ag-Ni multilayered films upon ion irradiation and were both identified to consist of two overlapping fcc lattices, corresponding to new magnetic states of ferromagnetic metals Co and Ni. Surprisingly, in the newly formed structures, the average magnetic moment per Co atom was found to be 2.84mu(B), much larger than ever reported before, while the average magnetic moment per Ni atom decreased to 1/3 of its equilibrium value. The driving force for growing the ordered layered structures was from a dynamic atomic collision triggered by ion irradiation together with interfacial free energy, which was properly designed to elevate the initial state of the multilayered films up to nearby the respective highly energetic nonequilibrium levels in the immiscible Ag-Co and Ag-Ni systems.
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页码：1 / 6
页数：6
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