High-Pressure Growth and Characterization of Seven-Layered CuBa2Ca6Cu7O17±δ Single Crystals

IF 18.5 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Advanced Functional Materials Pub Date : 2024-10-26 DOI:10.1002/adfm.202414633

Xue Ming, Boyu Li, Bo Zheng, Yuecong Liu, Yuhang Zhang, Tian-Yi Li, Chengping He, Xiyu Zhu, Dongsheng Song, Binghui Ge, Hai-Hu Wen

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Abstract

In cuprates, the superconducting transition temperature (T_c) is closely related to the number n of CuO₂ planes per unit cell. The studies on multi-layered cuprates offer insights into the physical properties and pairing mechanisms of superconductivity. However, the synthesis and stability of ultra-multilayered cuprates pose significant challenges. Here, a newly discovered seven-layered cuprate CuBa₂Ca₆Cu₇O_17±_δ grown under high pressure is reported. Magnetization and transport measurements confirm bulk superconductivity with T_c of ≈85 K. The magnetization hysteresis loops, critical current density (J_c), and irreversibility fields of CuBa₂Ca₆Cu₇O_17±_δ are also investigated. The novel compound CuBa₂Ca₆Cu₇O_17±_δ provides an ideal platform for studying the physics of multi-layered cuprates.

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七层 CuBa2Ca6Cu7O17±δ 单晶的高压生长与表征

在铜氧化物中，超导转变温度（Tc）与单位晶胞中的铜氧化物平面数 n 密切相关。对多层铜氧化物的研究有助于深入了解超导的物理性质和配对机制。然而，超多层铜氧化物的合成和稳定性带来了巨大挑战。本文报告了新发现的在高压下生长的七层铜氧化物 CuBa2Ca6Cu7O17±δ。磁化和传输测量证实了块体超导性，Tc ≈85 K。还研究了 CuBa2Ca6Cu7O17±δ 的磁化滞后环、临界电流密度 (Jc) 和不可逆场。新型化合物 CuBa2Ca6Cu7O17±δ 为研究多层铜氧化物的物理特性提供了一个理想的平台。

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来源期刊

Advanced Functional Materials 工程技术-材料科学：综合

CiteScore

29.50

自引率

4.20%

发文量

2086

审稿时长

2.1 months

期刊介绍： Firmly established as a top-tier materials science journal, Advanced Functional Materials reports breakthrough research in all aspects of materials science, including nanotechnology, chemistry, physics, and biology every week. Advanced Functional Materials is known for its rapid and fair peer review, quality content, and high impact, making it the first choice of the international materials science community.