MÖssbauer Effect Study of the Absence of Fe Magnetism in Superconducting Sc2Fe3Si5 and Th7Fe3

1980 ◽  
Vol 3 ◽  
Author(s):  
J. D. Cashion ◽  
G. K. Shenoy ◽  
D. Niarchos ◽  
P. J. Viccaro ◽  
Charles M. Falco

ABSTRACTThere are only a few Fe-based compounds which are superconducting since the depairing of Cooper pairs is unavoidable in the presence of an Fe moment. In Sc2Fe3Si5 and Th7Fe3, Mössbauer measurements on 57Fe show that there is no magnetism at the Fe site in either compound. The isomer shift values indicate the reason behind this identical magnetic behavior to be quite different in its electronic origin.

1987 ◽  
Vol 01 (02) ◽  
pp. 491-494
Author(s):  
Weiming Xu ◽  
Xiaoxiang Liu ◽  
Mingzhi Jin ◽  
Lanying He ◽  
Yifeng Wang ◽  
...  

In this work the hyperfine interactions of (EuxY1−x)0.3Ba0.1CuO3(x=0.5, 0.7, 1.0) superconductors have been studied by 151Eu Mössbauer effect. X-ray diffraction shows that the materials are of single phase. Mössbauer spectra were measured at 300K and 83K. The results show that Eu ions are in the trivalent oxidation state. The isomer shift decreases with the increasing of composition x. The electron density at the 151Eu nuclei is decreased below the zero resistance temperature.


1976 ◽  
Vol 37 (C6) ◽  
pp. C6-783-C6-785 ◽  
Author(s):  
E. G. DA SILVA ◽  
A. ABRAS ◽  
A. O. R. SETTE CAMARA

1979 ◽  
Vol 40 (C2) ◽  
pp. C2-350-C2-352 ◽  
Author(s):  
D. Chambaere ◽  
A. Govaert ◽  
E. de Grave ◽  
G. Harts ◽  
G. Robbrecht

1979 ◽  
Vol 40 (C2) ◽  
pp. C2-328-C2-330
Author(s):  
P. C.M. Gubbens ◽  
A. M. van der Kraan ◽  
J. A.C. van Ooijen ◽  
J. Reedijk

1988 ◽  
Vol 49 (C8) ◽  
pp. C8-1781-C8-1782
Author(s):  
C. Dufour ◽  
A. Bruson ◽  
B. George ◽  
G. Marchal ◽  
Ph. Mangin

1986 ◽  
Vol 28 (1-4) ◽  
pp. 643-646 ◽  
Author(s):  
E. de Grave ◽  
R. E. Vandenberghe

Author(s):  
S. C. Bhandari ◽  
D. Guragain ◽  
J. Mohapatra ◽  
S. Yoon ◽  
J. P. Liu ◽  
...  

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