Electron diffraction study of a high-temperature diamond-like silicon ferromagnet with the self-organized superlattice distribution of manganese impurity

JETP Letters ◽  
2015 ◽  
Vol 100 (11) ◽  
pp. 719-723 ◽  
Author(s):  
E. S. Demidov ◽  
V. V. Podol’skii ◽  
V. P. Lesnikov ◽  
E. D. Pavlova ◽  
A. I. Bobrov ◽  
...  
Keyword(s):  
High Temperature ◽  
Electron Diffraction ◽  
Diffraction Study ◽  
Electron Diffraction Study ◽  
The Self ◽  
Self Organized

scholarly journals Electron Diffraction Study of the Space Group Variation in the Al–Mn–Pt T-Phase

Symmetry ◽  
2021 ◽  
Vol 14 (1) ◽  
pp. 38
Author(s):  
Rimon Tamari ◽  
Benjamin Grushko ◽  
Louisa Meshi
Keyword(s):  
High Temperature ◽  
Electron Diffraction ◽  
Diffraction Study ◽  
Electron Diffraction Study ◽  
Ternary Systems ◽  
Homogeneity Region ◽  
Space Group ◽  
Space Groups ◽  
Group Variation ◽  
T Phase

Binary high temperature “Al3Mn” (T-phase) and its extensions in ternary systems were the subjects of numerous crystallographic investigations. The results were ambiguous regarding the existence or lack of the center of symmetry: both Pna21 and Pnam space groups were reported. Our research on the Al–Mn–Pt T-phase allowed concluding that inside a continuous homogeneity region, the structure of the Al-rich T-phase (e.g., Al78Mn17.5Pt4.5) belongs to the non-centrosymmetric Pna21 space group, while the structure of the Al-poor T-phase (such as Al71.3Mn25.1Pt3.6) is centrosymmetric, i.e., Pnam. Following metallurgical and crystallographic considerations, the change in the symmetry was explained.

CONVERGENT BEAM ELECTRON DIFFRACTION STUDY OF Bi-BASED HIGH TEMPERATURE SUPERCONDUCTING LAYERED COMPOUNDS

1990 ◽  
Vol 04 (09) ◽  
pp. 605-611 ◽  
Author(s):  
X. F. ZHANG ◽  
Y. F. YAN ◽  
K. K. FUNG
Keyword(s):  
High Temperature ◽  
Electron Diffraction ◽  
Diffraction Study ◽  
Wave Vector ◽  
Electron Diffraction Study ◽  
Convergent Beam Electron Diffraction ◽  
Stacking Fault ◽  
Layered Compounds ◽  
Beam Electron ◽  
Convergent Beam

Cleaved specimens of layered compounds Bi 2 Sr 2( CaCuO 2)n CuO 6, n = 0, 1 and 2 phases have been studied by convergent beam electron diffraction. The identity and the symmetry of the phases have been determined from the higher order Laue zone (HOLZ) rings and the symmetry of their [001] patterns. In the case of Bi 2 Sr 2 CuO 6, the [001] axial periodicity corresponds to the component of the wave vector of the monoclinic modulation along the c axis. Widely different axial periodicities have been obtained. This is interpreted as the manifestation of the variation of the monoclinic modulation. The presence of basal stacking fault lowers the symmetry of the [001] pattern.

scholarly journals Limited local electron-lattice coupling in manganites: An electron diffraction study

2008 ◽  
Vol 77 (9) ◽  
Author(s):  
D. Sánchez ◽  
M. J. Calderón ◽  
J. Sánchez-Benítez ◽  
A. J. Williams ◽  
J. P. Attfield ◽  
...  
Keyword(s):  
Electron Diffraction ◽  
Diffraction Study ◽  
Electron Diffraction Study ◽  
Local Electron ◽  
Lattice Coupling
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