通过顶播溶液生长技术获得大尺寸和高度均匀的超导 RE123 单晶:物理研究平台

IF 9.1 2区 化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR Progress in Solid State Chemistry Pub Date : 2024-03-01 DOI:10.1016/j.progsolidstchem.2024.100438
Yanhan Zhu , Xin Yao
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引用次数: 0

摘要

近二十年来,具有高质量的 REBa2Cu3O7-δ (RE123,RE = 稀土元素)单晶体越来越多,在超导研究中引起了极大的兴趣。作为一种先进而经典的方法,顶部播种溶液生长(TSSG)是迄今为止唯一能制备出尺寸为 2 厘米的 RE123 单晶体的技术,例如,Y123 单晶体的 a-b 平面尺寸为 19.8 × 19.5 平方毫米,高度为 16.5 毫米。最近,人们开发出了一些新方法,如拉晶法结合持续冷却快速生长,以获得大尺寸的 RE123 晶体;利用添加掺杂剂的坩埚持续生长,以生产高度均匀的掺杂 Y123 晶体。因此,全球数十个物理实验室的研究人员一直受益于 TSSG 生产的 RE123 单晶,并开展了出色的合作研究。本文围绕晶体增大、RE123 化学计量控制和阳离子掺杂三个方面,综述了利用 TSSG 生长优异 RE123 单晶用于基础研究和实际应用所取得的进展和成果。根据RE-Ba-Cu-O体系相图的显著特征,全面阐明了晶体生长的机理以及相形成与超导特性之间的相关性。
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Large-sized and highly-uniform superconducting RE123 single crystals by top-seeded solution-growth: A platform for physical research

The last two decades have seen a growing trend towards sizable single crystals of REBa2Cu3O7−δ (RE123, RE = rare earth elements) with fine quality, which have been attracting considerable interest in the study of superconductivity. As an advanced and classic method, top-seeded solution-growth (TSSG) is the only technique to date for producing RE123 single crystals with dimensions of 2 cm, e.g., a Y123 single crystal of 19.8 × 19.5 mm2 in a-b plane and 16.5 mm in height. Recently, novel approaches were developed such as crystal-pulling combined with continual cooling for rapid growth to attain a large-sized RE123 crystal, and the utilization of dopant-added crucibles for continuous growth to produce highly-uniform doped-Y123 crystals. Consequently, researchers from several tens of physical laboratories worldwide have been benefiting from TSSG-produced RE123 single crystals and generating excellent collaborative work. This paper provides an overview of the progress and achievements on the growth of superior RE123 single crystals by TSSG for fundamental studies and practical applications, focusing on three aspects including crystal enlargement, RE123 stoichiometry control and cation doping. The mechanism of crystal growth and the correlation between phase formation and superconducting properties are comprehensively elucidated on the basis of distinctive features of phase diagrams of RE–Ba–Cu–O systems.

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来源期刊
Progress in Solid State Chemistry
Progress in Solid State Chemistry 化学-无机化学与核化学
CiteScore
14.10
自引率
3.30%
发文量
12
期刊介绍: Progress in Solid State Chemistry offers critical reviews and specialized articles written by leading experts in the field, providing a comprehensive view of solid-state chemistry. It addresses the challenge of dispersed literature by offering up-to-date assessments of research progress and recent developments. Emphasis is placed on the relationship between physical properties and structural chemistry, particularly imperfections like vacancies and dislocations. The reviews published in Progress in Solid State Chemistry emphasize critical evaluation of the field, along with indications of current problems and future directions. Papers are not intended to be bibliographic in nature but rather to inform a broad range of readers in an inherently multidisciplinary field by providing expert treatises oriented both towards specialists in different areas of the solid state and towards nonspecialists. The authorship is international, and the subject matter will be of interest to chemists, materials scientists, physicists, metallurgists, crystallographers, ceramists, and engineers interested in the solid state.
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