Influence mechanism of secondary gel technique on Bi-2212 superconducting phase: Gel model simulation and verification

IMR OpenIR

	Influence mechanism of secondary gel technique on Bi-2212 superconducting phase: Gel model simulation and verification
	Yang, Huazhe; Shahzad, M. Babar; Yu, Xiaoming; Qi, Yang; Qi, Y (reprint author), Northeastern Univ, Inst Mat Phys & Chem, Sch Mat Sci & Engn, Shenyang 110819, Peoples R China.; Yang, HZ (reprint author), China Med Univ, Dept Phys, Shenyang 110122, Peoples R China.
	2016-06-05
发表期刊	MATERIALS & DESIGN
ISSN	0264-1275
卷号	99 页码:115-119
摘要	Study of gel structures as precursors for Bi2Sr2Ca1Cu2Ox, (Bi-2212) superconductors can provide better understanding of the role of gel process in the synthesis of superconducting phase. However, it is still challenging to investigate the amorphous gel system through conventional methods. Here, based on our former experiments, we present a computer simulation method to establish the geometric structural models of ethylenediaminetetraacetic acid (EDTA)-metal cation complexes, conventional gel and home-made secondary gel. Local orbital density functional method, Dmol(3) approach was applied to optimize the structures and compare the thermodynamical stabilities of different systems. In addition, Bi-2212 samples with different sintering time were prepared via both conventional and secondary gel technique to verify the calculation results. Results demonstrated that the secondary gel system possesses higher phase stability compared to the conventional gel owing to its higher bonding ability of EDTA-metal cation complexes. Hence, component homogeneity of complexes can be enhanced and pure Bi-2212 phase can be synthesized with shorter sintering time. (C) 2016 Elsevier Ltd. All rights reserved.
部门归属	[shahzad, m. babar ; yu, xiaoming ; qi, yang] northeastern univ, inst mat phys & chem, sch mat sci & engn, shenyang 110819, peoples r china ; [yang, huazhe] china med univ, dept phys, shenyang 110122, peoples r china ; [shahzad, m. babar ; yu, xiaoming] chinese acad sci, inst met res, shenyang 110016, peoples r china
关键词	Secondary Gel Bi-2212 Thermodynamic Calculation Component Homogeneity
学科领域	Materials Science
资助者	National Science Foundation of China [51172040, 81500897]; China Scholarship Council [201408210385]; Foundation of the Education Department of Liaoning Province in China [L2013285]; Science and Technology Planning Project of Shenyang City [F11-262-9-16]
收录类别	sci
语种	英语
WOS记录号	WOS:000375356700013
引用统计	被引频次：5[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/321006/75838
专题	中国科学院金属研究所
通讯作者	Qi, Y (reprint author), Northeastern Univ, Inst Mat Phys & Chem, Sch Mat Sci & Engn, Shenyang 110819, Peoples R China.; Yang, HZ (reprint author), China Med Univ, Dept Phys, Shenyang 110122, Peoples R China.
推荐引用方式 GB/T 7714	Yang, Huazhe,Shahzad, M. Babar,Yu, Xiaoming,et al. Influence mechanism of secondary gel technique on Bi-2212 superconducting phase: Gel model simulation and verification[J]. MATERIALS & DESIGN,2016,99:115-119.
APA	Yang, Huazhe,Shahzad, M. Babar,Yu, Xiaoming,Qi, Yang,Qi, Y ,&Yang, HZ .(2016).Influence mechanism of secondary gel technique on Bi-2212 superconducting phase: Gel model simulation and verification.MATERIALS & DESIGN,99,115-119.
MLA	Yang, Huazhe,et al."Influence mechanism of secondary gel technique on Bi-2212 superconducting phase: Gel model simulation and verification".MATERIALS & DESIGN 99(2016):115-119.