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Superconductivity, weak ferromagnetism and structural instability in (Eu1−yGdy)2−xCexCuO4

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Fuchs, D., Noll, M., Grauel, A., Geibel, C., & Steglich, F. (1994). Superconductivity, weak ferromagnetism and structural instability in (Eu1−yGdy)2−xCexCuO4. Physica B-Condensed Matter, 194, 2255-2256. doi:10.1016/0921-4526(94)91627-6.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0019-DD46-0
Abstract
We present a study of the transition from superconductivity to weak ferromagnetism as a function of composition in the systems (Eu1-yRy)2-xCexCuO4 with R = Sm and Gd. T(c) decreases linearly from the Sm- to the Eu-compound und further in the Gd-doped samples up to y = 0.1. At this composition we observe in the same sample both superconductivity and weak ferromagnetism. At higher Gd-contents superconductivity is suppressed and the onset temperature for weak ferromagnetism increases slightly with y. Our results confirm that this transition is related to an instability of the T' structure.