Theory of the Snoek Effect in Ternary B.C.C. Alloys : V. Effect of Pairing Substitutional Solute Atoms
Theory of the Snoek Effect in Ternary B.C.C. Alloys : V. Effect of Pairing Substitutional Solute Atoms
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三元 B.C.C. 中的斯诺克效应理论
DOI：
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发表时间：
1972
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通讯作者：
M. Koiwa
中科院分区：
文献类型：
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作者：
M. Koiwa
本文计算了三元b.c.c.替代原子既以孤立原子又以成对原子存在的合金。计算预测除了普通的Snoek峰之外，还出现两个峰P1和P2。峰P2与在对附近的间隙原子有关，而峰P1由来自对附近的间隙原子以及那些靠近孤立的替代原子的贡献组成。本理论还预言，如果直接跃迁的激活能很高，对周围的间隙原子（P2）的弛豫可能发生通过旁路扩散。
Abstract The damping spectrum of the Snoek effect is calculated for ternary b.c.c. alloys in which substitutional atoms exist both as isolated and as paired atoms. The calculation predicts the appearance of two peaks, P1 and P2, in addition to the ordinary Snoek peak. The peak P2 is associated with interstitial atoms in the vicinity of pairs, while the peak P1 consists of contributions from interstitial atoms near pairs as well as those near isolated substitutional atoms. The present theory also predicts that the relaxation of interstitial atoms around pairs (P2) may occur through by-pass diffusion if the activation energy for direct jumps is very high.