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The excess oxygen model for Fe-doped superconductors
Chen, GZ; Li Y(李杨); Cao GH(曹国辉); Li, Y; Wang, YB; Cao, GH; Ma, RZ; Pan, SM
1997
发表期刊PHYSICA C
卷号282期号:2页码:1097-1098
通讯作者UNIV SCI & TECHNOL BEIJING,DEPT MAT PHYS,BEIJING 100083,PEOPLES R CHINA ; CAS,INST HIGH ENERGY PHYS,BEIJING 100080,PEOPLES R CHINA
文章类型Article; Proceedings Paper
摘要A excess oxygen model that explains the Fc-doping mechanism in 1223 Tl-Ba-Ca-Cu-O superconducting phasc is presented. So far the details of the coordination of Fc dopant is not understood completely yet, for Fe dopant substitution in Tl-system cuprate oxide. The similarity in the ionic radii and electronegativity of Ca and Fc lead to the Fc occupying Cu lattice site. However, the difference between the oxidation states of Fc and Cu means that Fc will bring the excess oxygen into lattice to keep the charge balance. We show that, for the evidence of the excess oxygen., the bonding energy of Fc-cluster in Cu-O layer reach its minimum when Fc make a shift from the center of Cu-O square network. Moreover, under the scheme of effective valence, the calculated value of Fc effective valence is relatively close to that of Mossbauer measurement.
学科领域Physics
DOI10.1016/S0921-4534(97)00653-9
URL查看原文
语种英语
WOS研究方向Physics
WOS类目Physics, Applied
WOS记录号WOS:A1997XZ90500330
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文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/239040
专题多学科研究中心
作者单位中国科学院高能物理研究所
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GB/T 7714
Chen, GZ,Li Y,Cao GH,et al. The excess oxygen model for Fe-doped superconductors[J]. PHYSICA C,1997,282(2):1097-1098.
APA Chen, GZ.,李杨.,曹国辉.,Li, Y.,Wang, YB.,...&Pan, SM.(1997).The excess oxygen model for Fe-doped superconductors.PHYSICA C,282(2),1097-1098.
MLA Chen, GZ,et al."The excess oxygen model for Fe-doped superconductors".PHYSICA C 282.2(1997):1097-1098.
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