磁场中 Bi88.08Mn11.92 电阻的温度相关性特征

IF 0.6 4区物理与天体物理 Q4 PHYSICS, APPLIED

Low Temperature Physics Pub Date : 2024-07-19 DOI:10.1063/10.0026270

A. V. Terekhov, K. Rogacki, V. M. Yarovyi, Z. D. Kovalyuk, E. Lähderanta, E. V. Khristenko, A. L. Solovjov

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引用次数: 0

摘要

研究了 Bi88.08Mn11.92 固溶体在 2-300 K 温度范围和高达 90 kOe 的磁场中 H ⊥ I 和 H || I 的电阻温度相关性。研究表明，在磁场中，Bi88.08Mn11.92 的电阻温度依赖性在 H ⊥ I 和 H || I 方向上都显示出最大值（绝缘体-金属转变）。最大值的温度随磁场的增加而升高。讨论了 Bi88.08Mn11.92 和锰含量较低的化合物 Bi95.69Mn3.69Fe0.62 与纯 Bi 的电阻温度依赖性之间出现的明显差异。研究发现，Bi88.08Mn11.92 的磁阻在整个研究温度范围内均为正值，在 H ⊥ I 的 90 kOe 磁场中达到 3290%，比 Mn 含量较低的 Bi95.69Mn3.69Fe0.62 化合物高出约 400%。有一种观点认为，Bi88.08Mn11.92 在无磁场和有磁场情况下的电阻随温度变化的特性，主要是由于 α-BiMn 相的内部磁性的影响，可以在多波段理论的框架内加以解释。

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Features of temperature dependences electrical resistance of Bi88.08Mn11.92 in magnetic fields

The temperature dependences of the electrical resistance of the solid solution of Bi88.08Mn11.92 in the temperature range of 2–300 K and magnetic fields up to 90 kOe for both H ⊥ I and H || I are studied. It has been shown that in a magnetic field, the temperature dependences of the electrical resistance of Bi88.08Mn11.92 show maxima (insulator–metal transition) for both the H ⊥ I and H || I orientations. The temperatures of the maxima increase with increasing field. The appearance of a noticeable difference between the temperature dependences of the electrical resistances of Bi88.08Mn11.92 and the compound Bi95.69Mn3.69Fe0.62 with a lower Mn content and pure Bi is discussed. It has been established that the magnetoresistance of Bi88.08Mn11.92 is positive over the entire temperature range studied and reaches a value of 3290% in a magnetic field of 90 kOe for H ⊥ I, which is approximately 400% higher than in the Bi95.69Mn3.69Fe0.62 compound with lower Mn content. A suggestion has been made that the peculiarities temperature dependences behavior of the electrical resistance of Bi88.08Mn11.92 without a magnetic field and in the field, are largely due to the influence of internal magnetism of the α-BiMn phase and can be explained within the framework of the multiband theory.

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来源期刊

Low Temperature Physics 物理-物理：应用

CiteScore

1.20

自引率

25.00%

发文量

138

审稿时长

3 months

期刊介绍： Guided by an international editorial board, Low Temperature Physics (LTP) communicates the results of important experimental and theoretical studies conducted at low temperatures. LTP offers key work in such areas as superconductivity, magnetism, lattice dynamics, quantum liquids and crystals, cryocrystals, low-dimensional and disordered systems, electronic properties of normal metals and alloys, and critical phenomena. The journal publishes original articles on new experimental and theoretical results as well as review articles, brief communications, memoirs, and biographies. Low Temperature Physics, a translation of the copyrighted Journal FIZIKA NIZKIKH TEMPERATUR, is a monthly journal containing English reports of current research in the field of the low temperature physics. The translation began with the 1975 issues. One volume is published annually beginning with the January issues.