INFLUENCE OF THE PLASTIC DEFORMATION ON THE CHARGE CARRIERS CONVERSION IN HIGH ENTROPY ALLOY AL0.5CoCuCrNiFe

Problems of Atomic Science and Technology Pub Date : 2024-01-29 DOI:10.46813/2024-149-164

M.O. Azarenkov, V.O. Frolov, E. Karaseva, О.V. Mats, E. S. Savchuk, V. Sokolenko, M. Tikhonovsky, Т.M. Tikhonovskаya, О.S. Tortika

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Abstract

In range ~300…77 K the anomalies of the fundamental transfer coefficients of high-entropy Al0.5CoCuCrNiFe alloy, as well as influence of plastic deformation on these anomalies were studied. Both the anomalies themselves and the deformation effects are associated, we believed, with hole↔electron conversion, which changes the ratio of the areas of electron and hole of the Fermi surface sheets. The kinetic data are compared with the temperature behavior of the spontaneous magnetization (Is) of the equiatomic AlCoCuCrNiFe alloy, which contain a set of 3-d ferromagnets in almost the same proportions. Interest in AlCoCuCrNiFe is caused by presence of the anomaly in Is(Т) in the same temperature range where the kinetic features of Al0.5CoCuCrNiFe we observed. The explanation this magnet anomaly was given by the phenomenon of hole↔electron conversion under the assumptions, that i) Is has electronic (Ise) and hole (Ish) components, and ii) the quanta of these components (ise and ish) satisfied the condition ise>ish.

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高熵合金 AL0.5CoCuCrNiFe 中塑料变形对电荷载体转化的影响

在 ~300...77 K 的范围内，研究了高熵 Al0.5CoCuCrNiFe 合金基本转移系数的异常以及塑性变形对这些异常的影响。我们认为，异常现象本身和形变效应都与空穴↔电子转换有关，空穴↔电子转换改变了费米表面薄片的电子和空穴面积比。我们将动力学数据与等原子 AlCoCuCrNiFe 合金自发磁化（Is）的温度行为进行了比较，后者包含一组比例几乎相同的三维铁磁体。我们之所以对 AlCoCuCrNiFe 产生兴趣，是因为在我们观察到 Al0.5CoCuCrNiFe 动力学特征的相同温度范围内，Is(Т) 存在异常。磁体异常的解释是空穴↔电子转换现象，其假设条件是：i) Is 具有电子（Ise）和空穴（Ish）成分；ii) 这些成分（ise 和 ish）的量子满足 ise>ish 的条件。

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Problems of Atomic Science and Technology

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