Phase Diagram of NdFeAsO1-xFx: Essential Role of Chemical Composition

被引：31
作者：
Malavasi, Lorenzo [1 ,2 ]
Artioli, Gianluca A. [1 ,2 ]
Ritter, Clemens [3 ]
Mozzati, M. Cristina [4 ,5 ]
Maroni, Beatrice [1 ,2 ]
Pahari, Bholanath [1 ,2 ]
Caneschi, Andrea [6 ,7 ]
机构：
[1] Univ Pavia, Dipartimento Chim Fis M Rolla, INSTM, UdR Pavia, I-27100 Pavia, Italy
[2] Univ Pavia, CNR, IENI, I-27100 Pavia, Italy
[3] Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France
[4] Univ Pavia, CNISM, Unita Pavia, I-27100 Pavia, Italy
[5] Univ Pavia, Dipartimento Fis A Volta, I-27100 Pavia, Italy
[6] Univ Florence, Dipartimento Chim, I-50019 Sesto Fiorentino, FI, Italy
[7] Univ Florence, INSTM, UdR Firenze, I-50019 Sesto Fiorentino, FI, Italy
来源：
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2010年 / 132卷 / 07期
关键词：
NEUTRON POWDER DIFFRACTION; SUPERCONDUCTIVITY; SMFEASO1-XFX;
D O I：
10.1021/ja910426d
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
In this Article, we provided the complete phase diagram of NdFeAsO1-xFx solid solution as a function of electron doping thanks to the careful determination of F- and O-content and phase content We gave direct evidence of the source of F-depletion in the superconducting main phase, that is, the formation of oxyfluoride spurious phase The approach reported in this work clearly showed that to give reliable results on these complex new superconducting materials, a rigorous control of the chemical composition of the considered phases has to be carried out
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页码：2417 / 2420
页数：4
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