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首页> 外文会议>International Conference on Single Crystal Growth and Heat amp; Mass Transfer(ICSC-2003) vol.2; 20030922-26; Obninsk(RU) >REHOMOGENIZATION OF Sb DURING INITIAL STAGE OF EXPERIMENT ON SOLIDIFICATION OF Ge DOPED WITH Sb USING AHP METHOD
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REHOMOGENIZATION OF Sb DURING INITIAL STAGE OF EXPERIMENT ON SOLIDIFICATION OF Ge DOPED WITH Sb USING AHP METHOD

机译：用AHP法固溶掺锑锗的实验初期锑的重整化。

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摘要

The rehomogenization of the solute concentration in the melt during initial stage of solidification of Ge doped with Sb using AHP method (Axial Heat Process) has been studied numerically. The problem involves convective movement with heat and mass transfer in the me segregation processes at the interface, interface tracking (Stefan problem), heat conduction in the crystal and in the crucible wall. Computations were performed using temperature data obtained from the experiment and also using temperature data obtained by approximation of experimental data by piecewise linear functions. At each time step concentration distribution in the melting zone was defined. The conditions at which concentration distribution in the melting zone does not exhibit significant maximums and therefore a good mixing is achieved are indicated. Analytical solution of one-dimensional diffusion problem with given initial distribution of concentration in the melting zone has been also obtained and compared with numerical solution.
机译：数值研究了用AHP法（轴向加热法）对掺Sb的Ge进行凝固初期熔融物中溶质浓度的再均化过程。问题涉及对流运动以及熔体中的传热和传质。界面处的分离过程，界面跟踪（Stefan问题），晶体和坩埚壁中的热传导。使用从实验获得的温度数据以及通过分段线性函数对实验数据进行近似获得的温度数据进行计算。在每个时间步骤中，确定熔融区中的浓度分布。指出了在熔融区中的浓度分布没有显示出明显的最大值并因此实现良好混合的条件。还获得了在熔化区域内具有给定浓度初始分布的一维扩散问题的解析解，并将其与数值解进行了比较。

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