signals and vice versa. This thesis develops a generalized diffusion equation with four electrochemical

excitons. Measurements of this new sample show large transport and a record high diffusion coefficient for

are performed on some of these materials to gain insight into the mechanisms for Li-ion diffusion

spin diffusion process at longer lengthscales. Temperature-dependent spin-Seebeck effect data on Pt

length of spin current is limited by the short spin-diffusion length and the strong magnetic damping in

defective regions, into p-type layers and by phosphorus diffusion.

diffusion of copper and silver intercalated within the van der Waals gap of MoS 2 is predicted to be 0.32

selenium diffusion rate, hence the thickness of the MoxSey layer, and a pressure regulator to control the

in undercooled liquid show that when the diffusion range of Sm is limited to ∼ 4A˙, the

samples, there is likely to be little diffusion. The small disagreement with theory even for pure samples

maximum diffusion time of one hour, at diffusion temperature of 520°C. The crystallographic