scholarly journals The electronic phase diagrams of the Eu(Fe0.81Co0.19)2As2superconductor

2012 ◽  
Vol 14 (7) ◽  
pp. 073052 ◽  
Author(s):  
Vinh Hung Tran ◽  
Zbigniew Bukowski ◽  
Lan Maria Tran ◽  
Andrzej J Zaleski
Keyword(s):  
Phase Diagrams ◽  
Electronic Phase ◽  
The Eu

Magnetic order and electronic phase diagrams of electron-doped copper oxide materials

1990 ◽  
Vol 42 (13) ◽  
pp. 7981-7988 ◽  
Author(s):  
G. M. Luke ◽  
L. P. Le ◽  
B. J. Sternlieb ◽  
Y. J. Uemura ◽  
J. H. Brewer ◽  
...  
Keyword(s):  
Copper Oxide ◽  
Phase Diagrams ◽  
Magnetic Order ◽  
Oxide Materials ◽  
Electronic Phase

Unification of the Electronic Phase Diagrams of the RO1−xFxFeAs-Compounds by Using the Real Fluorine Content

2010 ◽  
Vol 1254 ◽  
Author(s):  
A. Köhler ◽  
G. Behr
Keyword(s):  
Phase Diagrams ◽  
Fluorine Content ◽  
Published Data ◽  
Initial Weight ◽  
X Ray ◽  
The Real ◽  
Electronic Phase ◽  
Consistent Picture ◽  
Good Agreement

AbstractMeasurements of the actual fluorine content x in the RO1−xFxFeAs-samples by wavelength-dispersive X-ray spectroscopy (WDX) reveal sample dependent discrepancies to the nominal fluorine content (initial weight). In particular for SmO1−xFxFeAs, the measured value only reached approximately half of the required value. In the lanthanum compound LaO1−xFxFeAs, we found a good agreement mainly for x>0.05, but the fluorine hardly goes into the sample for x<0.05. We used the measured fluorine content when plotting the electronic phase diagrams again and find a more consistent picture occurs as well for our samples as for comparison with the divers published data.

Electronic phase diagrams and fermi surfaces of κ-(ET)2X, the high Tc organic superconductors

1997 ◽  
Vol 85 (1-3) ◽  
pp. 1471-1478 ◽  
Author(s):  
T. Ishiguro ◽  
H. Ito ◽  
Y. Yamauchi ◽  
E. Ohmichi ◽  
M. Kubota ◽  
...  
Keyword(s):  
Phase Diagrams ◽  
Organic Superconductors ◽  
Fermi Surfaces ◽  
High Tc ◽  
Electronic Phase

scholarly journals Coexistence of ferromagnetism, antiferromagnetism, and superconductivity in magnetically anisotropic (Eu,La)FeAs2

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Jia Yu ◽  
Congcong Le ◽  
Zhiwei Li ◽  
Lisi Li ◽  
Tong Liu ◽  
...  
Keyword(s):  
Exchange Bias ◽  
High Temperature Superconductivity ◽  
La Doping ◽  
Electronic Phase ◽  
Potential Applications ◽  
Electronic Phase Diagram ◽  
Superconducting Loop ◽  
Physical Phenomena ◽  
The Eu ◽  
Magnetic Sublattices

AbstractMaterials with exceptional magnetism and superconductivity usually conceive emergent physical phenomena. Here, we investigate the physical properties of the (Eu,La)FeAs2 system with double magnetic sublattices. The parent EuFeAs2 shows anisotropy-associated magnetic behaviors, such as Eu-related moment canting and exchange bias. Through La doping, the magnetic anisotropy is enhanced with ferromagnetism of Eu2+ realized in the overdoped region, and a special exchange bias of the superposed ferromagnetic/superconducting loop revealed in Eu0.8La0.2FeAs2. Meanwhile, the Fe-related antiferromagnetism shows unusual robustness against La doping. Theoretical calculation and 57Fe Mössbauer spectroscopy investigation reveal a doping-tunable dual itinerant/localized nature of the Fe-related antiferromagnetism. The coexistence of the Eu-related ferromagnetism, Fe-related robust antiferromagnetism, and superconductivity is further revealed in Eu0.8La0.2FeAs2, providing a platform for further exploration of potential applications and emergent physics. Finally, an electronic phase diagram is established for (Eu,La)FeAs2 with the whole superconducting dome adjacent to the Fe-related antiferromagnetic phase, which is of benefit for seeking underlying clues to high-temperature superconductivity.

scholarly journals The Crystallographic and Electronic Phase Diagrams of Yttria-Stabilized Zirconia Model Electrolytes

2017 ◽  
Vol 78 (1) ◽  
pp. 311-319 ◽  
Author(s):  
Thomas Götsch ◽  
Alexander Menzel ◽  
Erminald Bertel ◽  
Michael Stöger-Pollach ◽  
Simon Penner
Keyword(s):  
Phase Diagrams ◽  
Yttria Stabilized Zirconia ◽  
Stabilized Zirconia ◽  
Electronic Phase

Transmission electron microscope studies in special ceramics

1978 ◽  
Vol 36 (1) ◽  
pp. 268-269
Author(s):  
A. Zangvil ◽  
L.J. Gauckler ◽  
G. Schneider ◽  
M. Rühle
Keyword(s):  
Phase Diagrams ◽  
Crystal Structures ◽  
Thin Foil ◽  
Limited Extent ◽  
Complex Materials ◽  
X Ray Diffraction ◽  
X Ray ◽  
Transmission Electron ◽  
Electron Microscopes ◽  
Lattice Resolution

The use of high temperature special ceramics which are usually complex materials based on oxides, nitrides, carbides and borides of silicon and aluminum, is critically dependent on their thermomechanical and other physical properties. The investigations of the phase diagrams, crystal structures and microstructural features are essential for better understanding of the macro-properties. Phase diagrams and crystal structures have been studied mainly by X-ray diffraction (XRD). Transmission electron microscopy (TEM) has contributed to this field to a very limited extent; it has been used more extensively in the study of microstructure, phase transformations and lattice defects. Often only TEM can give solutions to numerous problems in the above fields, since the various phases exist in extremely fine grains and subgrain structures; single crystals of appreciable size are often not available. Examples with some of our experimental results from two multicomponent systems are presented here. The standard ion thinning technique was used for the preparation of thin foil samples, which were then investigated with JEOL 200A and Siemens ELMISKOP 102 (for the lattice resolution work) electron microscopes.

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