The Influence of Gadolinium Content in GdBCO Industrial 2G HTS Wires on the Superconducting Properties in Magnetic Field

IF 1.7 3区物理与天体物理 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Applied Superconductivity Pub Date : 2025-04-28 DOI:10.1109/TASC.2025.3564716

Pavel N. Degtyarenko;Alexey V. Ovcharov;Alexey Yu. Tsvetkov;Igor A. Karateev;Alexander L. Vasiliev;Vadim A. Amelichev;Burkhan I. Massalimov;Ekaterina A. Golovkova

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Abstract

The study of the 12-mm-wide 2G HTS wires with gadolinium excess is presented. The GdBCO layer was grown by pulsed laser deposition using commercial production equipment and contained different concentration of Gd: pristine sample, +15%, +30%, and +45% of Gd contents. The samples were characterized by transport measurements over wide temperature (T) and magnetic field (B) ranges. The microstructure investigations were carried out by scanning transmission electron microscopy. The resistivity curves of the samples were measured in the field up to 9 T. We determined that the irreversibility temperature (T_irr) derived from these curves is maximum in case of B‖ab. Irreversibility temperature has been decreased with increasing of applied magnetic field from 0 to 3 Т and that confirmed by measurements of the resistivity transition as imaginary part of magnetic susceptibility (χ”). The maximum of T_irr obtained in the experiments indicate a different pinning structure mechanism in the studied samples.

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GdBCO工业2G高温超导导线中钆含量对磁场超导性能的影响

对含过量钆的12mm宽2G高温超导丝进行了研究。GdBCO层采用脉冲激光沉积法在商业化生产设备上生长，并含有不同浓度的Gd：原始样品、+15%、+30%和+45%的Gd含量。通过在宽温度(T)和磁场(B)范围内的输运测量来表征样品。采用扫描透射电镜对其微观结构进行了研究。在9t范围内测量了样品的电阻率曲线，确定了在B‖ab条件下，由这些曲线得出的不可逆温度（Tirr）最大。不可逆性温度随外加磁场从0到3 Т的增大而减小，这一点通过电阻率跃迁作为磁化率虚部（χ”）的测量得到证实。实验得到的Tirr最大值表明，所研究的样品中存在不同的钉住结构机制。

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来源期刊

IEEE Transactions on Applied Superconductivity 工程技术-工程：电子与电气

CiteScore

3.50

自引率

33.30%

发文量

650

审稿时长

2.3 months

期刊介绍： IEEE Transactions on Applied Superconductivity (TAS) contains articles on the applications of superconductivity and other relevant technology. Electronic applications include analog and digital circuits employing thin films and active devices such as Josephson junctions. Large scale applications include magnets for power applications such as motors and generators, for magnetic resonance, for accelerators, and cable applications such as power transmission.