20.500.12556/RUL-138677 Molecular self-diffusion in internal magnetic fields of porous medium investigated by NMR MGSE method Inhomogeneous magnetic fields generated in porous media due to differences in magnetic susceptibility at solid/liquid interfaces and due to intrinsic or artificially doped magnetic impurities can be used to gain insight into the molecular dynamics of fluid in the structure of a porous medium using the concept of NMR modulated gradient spin echo method. We extended the theory of this method to the case of an inhomogeneous magnetic field that cannot be approximated by an uniform gradient, in order to explain the CPMG measurements of self-diffusion in water soaked ceramics, which are doped with magnetic impurities of different contents. The new interpretation provides the spin relaxation times, the average pore size and their distribution, as well as the strength of the internal magnetic gradient fields in the doped ceramics. nuclear magnetic resonance MGSE method magnetic field magnetic susceptibility self-diffusion porous media NMR spin echo self-diffusion measurement very in-homogeneous magnetic field molecular velocity auto-correlation magnetic impurities jedrska magnetna resonanca metoda MGSE magnetno polje magnetna susceptibilnost lastna difuzija porozne snovi true false true Angleški jezik Slovenski jezik Članek v reviji 2022-08-09 10:57:54 2022-08-09 10:57:56 2022-09-15 04:17:03 0000-00-00 00:00:00 2021 0 0 10 str. art. 106981 Vol. 328 Jul. 2021 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 537.635 1090-7807 10.1016/j.jmr.2021.106981 62304515 1-s2.0-S1090780721000707-main.pdf 1-s2.0-S1090780721000707-main.pdf 1 E480A6E9FE9AC6EBFF7873F8EC59AD77 c8af55d145457c8259faf6f8149ff76ff9d5ebb262a73fe26343e6345aee0ecc b212e088-17c1-11ed-8aca-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=159071 https://www.sciencedirect.com/science/article/pii/S1090780721000707 0 48c12398-17c1-11ed-8aca-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=159070 Fakulteta za matematiko in fiziko 0 0 0