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pro vyhledávání: '"O. Kanert"'
Autor:
O Kanert
Publikováno v:
Journal of Non-Crystalline Solids. 222:321-328
Publikováno v:
Berichte der bunsen-Gesellschaft-Physical chemistry chemical physics, 101(9), 1286-1290. Wiley
Strong irradiation of NaCl crystals results in a formation of sodium colloids which exhibit metallic properties. In consequence, besides the Na-23 line of NaCl a second well-separated Na-23 line occurs in the NMR spectrum caused by the Knight shift o
Publikováno v:
Journal of Materials Science, 31(12), 3289-3297. SPRINGER
Nuclear magnetic resonance techniques can be used to monitor in situ the dynamical behaviour of point and line defects in materials during deformation. These techniques are non-destructive and non-invasive. We report here the atomic transport, in par
Publikováno v:
Radiation Effects and Defects in Solids. 137:173-178
The K4.2Ti1.2(PO4)3 glass was used to study the interaction between dipoles and ions by dielectric and Raman spectroscopy. The activation energies for the K+ migration and dipole orientation were evaluated to be 0.61 ± .01 eV and 1.11 ± .02 eV, res
Publikováno v:
Physical Review B, 52(1), 125-133. AMER PHYSICAL SOC
Enhanced atomic diffusion under plastic deformation was observed in aluminum by means of an improved rotating-frame nuclear-spin-relaxation technique. The enhancement is caused by excess vacancies formed by the deformation process. 27Al NMR experimen
Publikováno v:
Philosophical Magazine B. 70:1045-1061
At low temperatures, nuclear spin relaxation (NSR) can be related to electrical conductivity in various inorganic oxide glasses by the fluctuation-dissipation theorem. The results indicate a common physical origin of the relaxation mechanism owing to
Publikováno v:
Acta Metallurgica et Materialia. 42:3409-3415
The motion of oxygen in solid vanadium and niobium, containing different amounts of oxygen (0.26--3.40 at.%), was studied by means of [sup 51]V and [sup 93]Nb nuclear spin relaxation (NSR) measurements at 300 K < T < 1,400 K. In the entire temperatur
Publikováno v:
Solid State Communications. 91:465-469
47,49 Ti and 137 Ba NMR measurements were performed on single-domain pure BaTiO 3 crystals between room temperature and 1700 K. In the tetragonal phase ( T T c ≈ 400 K), the NMR lines show a temperature dependent quadrupole shift Δν Q associated
Autor:
O. Kanert, D. Brinkmann
Publikováno v:
ChemInform. 24
Publikováno v:
Solid State Ionics. :936-946
Predictions of the coupling model proposed a decade ago for conductivity relaxations of glassy ionic conductors are shown to be in detailed agreement with recent Monte Carlo simulations. NMR spin lattice relaxation in poor ionic conductors including