Disordered lattice

Ebook "Crystallization of nanoscaled colloids" deals with the processes that create ordered assemblies from disordered nanoparticles. Ordered packings of nanoscale particles can exhibit unusual properties. This work investigates the self-assembly of such particles, a process widely employed for the generation of ordered structures, but not yet well understood. In situ methods are used to observe the assembly of sub-micron polymer lattices and sub-10 nm gold particles into crystalline monolayers and aggregates.

138p coduathanh1122 27-03-2024 3 1   Download

In this paper we use a new method based on Einstein’s equation to calculate the diffusion coefficient of impurity atoms in the disorder systems. Simulation results show that the diffusion coefficient D obeys the Arrhenius law. The dependence of the diffusion coefficient D on temperature for regular disordered lattice is also examined and discussed.

7p larachdumlanat127 20-12-2020 10 1   Download

The calculation of particular cases of two levels and uniform distributions of site and transition energies shows the applicability of the constructed expressions not only for site disorder system, but also for mixed system with both site and transition disorders. The blocking effect is studied and also discussed.

9p tamynhan8 04-11-2020 7 1   Download

In many-particle case, the blocking effect results in decreasing correlation factor F and average time τjump between two consecutive jumps. With increasing the number of particles, the diffusion coefficient DM decreases for site-energy and transition-energy disordered lattices due to the F-effect affects stronger than τ -effect. Furthermore, the blocking effect almost is temperature independent for both lattices.

12p thuyliebe 09-10-2018 17 0   Download

Low Fe-doped insulating ferromagnets La2CoMnO6 were prepared and studied. The compounds crystallized in orthorhombic space group Pnma with slight changes in the lattice constants. We have observed a significant reduction of resistivity due to doping, together with an increase of magnetization and saturated magnetization as doping level increased. The doping also reduced TC for both transitions at around 220 and 140 K which attribute for the different spin orderings of the magnetic ions.

5p thuyliebe 09-10-2018 52 0   Download