Synthesis of large FeSe superconductor crystals via ion release/introduction and property characterization

苑冬娜; 黄裕龙; 倪顺利; 周花雪; 毛义元; 胡卫; 袁洁; 金魁; 张广铭; 董晓莉; 周放

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Synthesis of large FeSe superconductor crystals via ion release/introduction and property characterization

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Large superconducting Fe Se crystals of(001) orientation have been prepared via a hydrothermal ion release/introduction route for the first time. The hydrothermally derived Fe Se crystals are up to 10 mm×5 mm×0.3 mm in dimension. The pure tetragonal FeSe phase has been confirmed by x-ray diffraction(XRD) and the composition determined by both inductively coupled plasma atomic emission spectroscopy(ICP-AES) and energy dispersive x-ray spectroscopy(EDX). The superconducting transition of the Fe Se samples has been characterized by magnetic and transport measurements. The zero-temperature upper critical field H_(c2) is calculated to be 13.2–16.7 T from a two-band model. The normal-state cooperative paramagnetism is found to be predominated by strong spin frustrations below the characteristic temperature T_(sn), where the Ising spin nematicity has been discerned in the FeSe superconductor crystals as reported elsewhere.

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来源
《中国物理：英文版》 |2016年第7期|93-96|共4页
作者
苑冬娜; 黄裕龙; 倪顺利; 周花雪; 毛义元; 胡卫; 袁洁; 金魁; 张广铭; 董晓莉; 周放;
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作者单位

Beijing National Laboratory for Condensed Matter Physics;

Institute of Physics;

Chinese Academy of Science;

Beijing 100190;

China;

University of Chinese Academy of Sciences;

Beijing 100049;

China;

State Key Laboratory of Low Dimensional Quantum Physics and Department of Physics;

Tsinghua University;

Beijing 100084;

China;

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原文格式 PDF
正文语种 chi
中图分类 O511.3;
关键词
超导晶体; 热离子; 电感耦合等离子体原子发射光谱; 性能表征; ICP-AES; 合成; X射线光谱仪; X-射线衍射;

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Synthesis of large FeSe superconductor crystals via ion release/introduction and property characterization

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