Features of defect nucleation in nanosized crystals with BCC lattice

2019 ◽  
Author(s):  
Konstantin Zolnikov ◽  
Dmitrij Kryzhevich ◽  
Aleksandr Korchuganov
Keyword(s):  
Bcc Lattice ◽  
Defect Nucleation ◽  
Nanosized Crystals

MECHANICAL RELAXATION OF SUBSTITUTIONAL-INTERSTITIAL (TETRAHEDRAL) ATOM COMPLEXES IN THE bcc LATTICE

1981 ◽  
Vol 42 (C5) ◽  
pp. C5-787-C5-792 ◽  
Author(s):  
M. Koiwa ◽  
S. Ishioka ◽  
G. Cannelli ◽  
R. Cantelli
Keyword(s):  
Mechanical Relaxation ◽  
Bcc Lattice

scholarly journals Optical glass-ceramics based on nanosized crystals of magnesium aluminate spinel doped with iron ions

2020 ◽  
Vol 1697 ◽  
pp. 012156
Author(s):  
V Bukina ◽  
O Dymshits ◽  
I Alekseeva ◽  
M Tsenter ◽  
S Zapalova ◽  
...  
Keyword(s):  
Optical Glass ◽  
Glass Ceramics ◽  
Magnesium Aluminate ◽  
Magnesium Aluminate Spinel ◽  
Iron Ions ◽  
Nanosized Crystals

scholarly journals Kondo effect and superconductivity in niobium with iron impurities

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Hansong Zeng ◽  
Dan Zhou ◽  
Guoqing Liang ◽  
Rujun Tang ◽  
Zhi H. Hang ◽  
...  
Keyword(s):  
Magnetic Moment ◽  
Low Temperatures ◽  
Kondo Effect ◽  
Film Structure ◽  
Kondo Temperature ◽  
Superconducting Transition ◽  
Interesting Phenomenon ◽  
Superconducting Device ◽  
Bcc Lattice ◽  
Device Applications

AbstractKondo effect is an interesting phenomenon in quantum many-body physics. Niobium (Nb) is a conventional superconductor important for many superconducting device applications. It was long thought that the Kondo effect cannot be observed in Nb because the magnetic moment of a magnetic impurity, e.g. iron (Fe), would have been quenched in Nb. Here we report an observation of the Kondo effect in a Nb thin film structure. We found that by co-annealing Nb films with Fe in Argon gas at above 400 $$^{\circ }$$ ∘ C for an hour, one can induce a Kondo effect in Nb. The Kondo effect is more pronounced at higher annealing temperature. The temperature dependence of the resistance suggests existence of remnant superconductivity at low temperatures even though the system never becomes superconducting. We find that the Hamann theory for the Kondo resistivity gives a satisfactory fitting to the result. The Hamann analysis gives a Kondo temperature for this Nb–Fe system at $$\sim $$ ∼ 16 K, well above the superconducting transition onset temperature 9 K of the starting Nb film, suggesting that the screening of the impurity spins is effective to allow Cooper pairs to form at low temperatures. We suggest that the mechanism by which the Fe impurities retain partially their magnetic moment is that they are located at the grain boundaries, not fully dissolved into the bcc lattice of Nb.

Eckhaus instability and defect nucleation in two-dimensional anisotropic systems

1991 ◽  
Vol 43 (10) ◽  
pp. 5728-5731 ◽  
Author(s):  
Steffen Rasenat ◽  
Erez Braun ◽  
Victor Steinberg
Keyword(s):  
Two Dimensional ◽  
Anisotropic Systems ◽  
Defect Nucleation ◽  
Eckhaus Instability

Heat Transfer in BCC Lattice Materials: Conduction, Convection, and Radiation

2021 ◽  
pp. 115159
Author(s):  
M. Shahrzadi ◽  
M. Davazdah Emami ◽  
A.H. Akbarzadeh
Keyword(s):  
Heat Transfer ◽  
Bcc Lattice ◽  
Lattice Materials
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