Controllable Phase Transition for Layered beta-FeSe Superconductor Synthesized by Solution Chemistry

IMR OpenIR

	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
发表期刊	CHEMISTRY OF MATERIALS
ISSN	0897-4756
卷号	29 期号:2 页码:842-848
摘要	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.; 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.
部门归属	[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
学科领域	Chemistry, Physical ; Materials Science, Multidisciplinary
资助者	National Natural Science Foundation of China [51371175, 51331006, 1150438]
收录类别	SCI
语种	英语
WOS记录号	WOS:000392891700045
引用统计	被引频次：27[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/78332
专题	中国科学院金属研究所
通讯作者	Li, D (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China.
推荐引用方式 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.