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Controllable Phase Transition for Layered beta-FeSe Superconductor Synthesized by Solution Chemistry
Li, Da; Pan, Desheng; Liu, Weilai; Li, Xiaoxi; Chen, Maolin; Li, Shaojie; Li, Yong; Tan, Jun; Sun, Dongming; Wang, Zhenhua; Han, Zheng; Zhang, Zhidong; Li, D (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China.
2017-01-24
Source PublicationCHEMISTRY OF MATERIALS
ISSN0897-4756
Volume29Issue:2Pages:842-848
AbstractLow-temperature synthesis of beta-FeSe superconductor from soluble precursors is a great challenge in the chemical solution approaches. Here, we develop a new and facile solution-based synthetic route to first fabricate narrow-phased beta-FeSe superconductor with soluble iron and selenium sources as starting materials. The growth mechanism of beta-FeSe superconductors is discussed by kinetically controllable syntheses in various reaction conditions. Chemically engineering the stoichiometry of beta-FeSe products by selenium-diffusion process gives rise to a transition of antiferromagnetic-superconducting-antiferromagnetic (AFM-SC-AFM) order. Once the AFM order is suppressed, SC beta-FeSe nanosheets show a tunable initial superconducting transition temperature (T-C) from 3.2 to 10 K in the superconducting regime. Electrical measurements on superconducting beta-FeSe exhibit an upper critical magnetic field higher than 14 T, showing potential application of beta-FeSe nanosheet for superconducting device. This method provides guidance for future applications in such chemical solutions for diffusion controlled synthesis of narrow-phased functional materials, which are enriched of abundant fundamental physics and potentials for future applications.; Low-temperature synthesis of beta-FeSe superconductor from soluble precursors is a great challenge in the chemical solution approaches. Here, we develop a new and facile solution-based synthetic route to first fabricate narrow-phased beta-FeSe superconductor with soluble iron and selenium sources as starting materials. The growth mechanism of beta-FeSe superconductors is discussed by kinetically controllable syntheses in various reaction conditions. Chemically engineering the stoichiometry of beta-FeSe products by selenium-diffusion process gives rise to a transition of antiferromagnetic-superconducting-antiferromagnetic (AFM-SC-AFM) order. Once the AFM order is suppressed, SC beta-FeSe nanosheets show a tunable initial superconducting transition temperature (T-C) from 3.2 to 10 K in the superconducting regime. Electrical measurements on superconducting beta-FeSe exhibit an upper critical magnetic field higher than 14 T, showing potential application of beta-FeSe nanosheet for superconducting device. This method provides guidance for future applications in such chemical solutions for diffusion controlled synthesis of narrow-phased functional materials, which are enriched of abundant fundamental physics and potentials for future applications.
description.department[li, da] chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china ; univ sci & technol china, sch mat sci & engn, hefei 230026, anhui, peoples r china
Subject AreaChemistry, Physical ; Materials Science, Multidisciplinary
Funding OrganizationNational Natural Science Foundation of China [51371175, 51331006, 1150438]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/78332
Collection中国科学院金属研究所
Corresponding AuthorLi, D (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China.
Recommended Citation
GB/T 7714
Li, Da,Pan, Desheng,Liu, Weilai,et al. Controllable Phase Transition for Layered beta-FeSe Superconductor Synthesized by Solution Chemistry[J]. CHEMISTRY OF MATERIALS,2017,29(2):842-848.
APA Li, Da.,Pan, Desheng.,Liu, Weilai.,Li, Xiaoxi.,Chen, Maolin.,...&Li, D .(2017).Controllable Phase Transition for Layered beta-FeSe Superconductor Synthesized by Solution Chemistry.CHEMISTRY OF MATERIALS,29(2),842-848.
MLA Li, Da,et al."Controllable Phase Transition for Layered beta-FeSe Superconductor Synthesized by Solution Chemistry".CHEMISTRY OF MATERIALS 29.2(2017):842-848.
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