高压合成新型（AuxCu1-x）Sr2CaCu2Oy超导体

IF 1 3区物理与天体物理 Q4 PHYSICS, APPLIED

Physica C-superconductivity and Its Applications Pub Date : 2025-07-24 DOI:10.1016/j.physc.2025.1354777

Zhenlei Feng , Thi-Mai-Dung Do , Tadachika Nakayama , Tomoya Aoba , Hisayuki Suematsu , Koichi Niihara

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引用次数: 0

摘要

在5.5 GPa和980 ~ 1030℃条件下对Au进行氧化，合成了新型超导体（AuxCu1-x）Sr2CaCu2Oy (（Au,Cu)-1(Sr)212）。采用x射线衍射（XRD）和场发射透射电镜（FE-TEM）分析了(Au,Cu)-1(Sr)212的晶体结构。XRD结果表明，(Au,Cu)-1(Sr)212的晶格参数分别为a≈3.86 Å， c≈10.98 Å。磁化率测量在T = 29.7 K以下观察到超导信号。

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Synthesis novel (AuxCu1-x)Sr2CaCu2Oy superconductor under high pressure

A novel superconductor of (AuxCu1-x)Sr2CaCu2Oy ((Au,Cu)-1(Sr)212) was synthesized by oxidation of Au at 5.5 GPa and 980–1030 °C. The crystal structure of (Au,Cu)-1(Sr)212 was analyzed using X-ray diffraction (XRD) and field emission transmission electron microscopy (FE-TEM). From XRD results, the (Au,Cu)-1(Sr)212 with lattice parameters of a ≈ 3.86 Å, c ≈ 10.98 Å, respectively, were observed. A superconducting signal was observed below T = 29.7 K in the magnetic susceptibility measurements.

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来源期刊

Physica C-superconductivity and Its Applications 物理-物理：应用

CiteScore

2.70

自引率

11.80%

发文量

102

审稿时长

66 days

期刊介绍： Physica C (Superconductivity and its Applications) publishes peer-reviewed papers on novel developments in the field of superconductivity. Topics include discovery of new superconducting materials and elucidation of their mechanisms, physics of vortex matter, enhancement of critical properties of superconductors, identification of novel properties and processing methods that improve their performance and promote new routes to applications of superconductivity. The main goal of the journal is to publish: 1. Papers that substantially increase the understanding of the fundamental aspects and mechanisms of superconductivity and vortex matter through theoretical and experimental methods. 2. Papers that report on novel physical properties and processing of materials that substantially enhance their critical performance. 3. Papers that promote new or improved routes to applications of superconductivity and/or superconducting materials, and proof-of-concept novel proto-type superconducting devices. The editors of the journal will select papers that are well written and based on thorough research that provide truly novel insights.