TEM study and Monte‐Carlo simulation of nano‐scale Co particles precipitated in a Cu matrix
TEM study and Monte‐Carlo simulation of nano‐scale Co particles precipitated in a Cu matrix
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Cu 基体中纳米级 Co 颗粒沉淀的 TEM 研究和蒙特卡罗模拟
DOI：
10.1002/pssa.200306634
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
J. Landuyt
中科院分区：
文献类型：
--
作者：
M. Takeda;H. Yamada;S. Yoshida;K. Shimasue;T. Endo;J. Landuyt
利用透射电镜和蒙特-卡罗模拟研究了纳米Co颗粒在Cu-Co合金中的析出行为。在沉淀过程的早期阶段随机形成小的相干Co颗粒。在共格沉淀的后期，两个或多个连接在一起的Co沉淀物线性排列到铜基体的（100）取向。最后，颗粒失去了它们的相干性的Cu基体，和不相干的Co沉淀物出现。同时考虑化学和磁相互作用的蒙特-卡罗模拟结果表明，共格Co粒子的耦合是由于相邻Co粒子之间的化学和磁相互作用而实现的。
The precipitation behavior of nano-scale Co particles formed in a Cu-Co alloy was studied by means of transmission electron microscopy and a Monte-Carlo simulation. Small coherent Co particles were randomly formed at the early stage of the precipitation process. Two or more Co precipitates linked together were linearly arranged to the (100) orientation of the copper matrix, at the later stage of the coherent precipitation. Finally, the particles lost their coherency to the Cu matrix, and incoherent Co precipitates appeared. The Monte-Carlo simulation, which took both chemical and magnetic interactions into account, strongly suggested that the coupling of coherent Co particles was realized as a result of the chemical and magnetic interactions between the Co particles, which are adjacent to each other.