We report on the synthesis of electrode layers by Pulsed Laser Deposition technique. We selected Nickel Oxide-8Yttria-Stabilized Zirconia as anode, La0.6Sr0.4Co0.2Fe0.8O3−δ perovskite material as cathode, and Yttria doped (Ceria–α Alumina) as electrolyte. We studied electrode structure (average grain size, porosity, and grain shape), the deposition uniformity and electrode-electrolyte interfaces. The electrodes were investigated in terms of

In this paper we present electron paramagnetic resonance (EPR) and Mossbauer (transmission method, TMS and measurements in the scattering method, CEMS) experiments on 57Fe (0.1– 1 at.%) doped nanocrystalline anatase-type TiO2, synthesized by a hydrothermal method. Different Fe3+ and Fe2+ ions positions, with various hyperfine interactions evidenced in Mossbauer spectra (MS), confirm a partial magnetic ordering at room temperature. The magnetic

Experimental evidence that nuclear magnetic resonance (NMR) can detect structural changes of piezoelectric La3Ga5SiO14 induced by dilute paramagnetic ions is presented. Ga(+3) and (Eu+3) cations have been incorporated into La3Ga5SiO14 monocrystals. As expected, the line-width of tetrahedral 29Si magic angle spinning (MAS) NMR spectra as well as the inverse of T2 relaxation time of 71Ga increase with the concentration of the paramagnetic ions. A surprising

Mossbauer absorbtion spectra of 57Fe-doped NaCl crystal were measured and correlated with an adequateelectric field gradient computation to describe the dipolar complexes occurring at decay of Suzuki-phase under thermal treatment and X-ray irradiation. An electrostatic potential of the type Vi=Sum(qij/rij+lamdaij*exp(-rij/roij)) was taken into account in the evaluation of EFG tensor.

Magnetic phase transitions in disordered crystalline iron germanates of the type Sr2 LnFe3 Ge3 O14 (Ln= La; Nd) were observed at low temperatures by means of 57Fe Mössbauer spectroscopy. The hyperfine interactions of Fe3+ magnetic moments ordered in one octahedral and two tetrahedral magnetic sublattices are discussed. A local environment computation on the octahedral sites confirms the assumption that the wide distribution found for the 4.2K octahedral

Polycristalline strontium iron germanates of the type Sr3-yLnyFe2+yGe4-yO14 (Ln=La,Nd; y=0,1) were investigated by 57Fe Mössbauer spectroscopy ithin the temperature range 4.2-300K The crystal chemistry and the distribu-tion of Fe3+ ions in the structure, as well as the crystallographic ine-quivalence of the oxygen polyhedra occupied by iron were studied over all paramagnetic temperature region. A correlation of the experimental data with a local

Magnetic Phase transitions in some new compounds of melilite structure (P4 21m) with extremely high iron content A2Fe2BO7 (A=Ba, Sr; B=Ge, Si) were observed at low temperatures by means of Mössbauer spectroscopy. It was found that Fe3+' magnetic moments are ordered by superexchange interaction in two subtattices with wide distributions of relatively low magnetic fields. The effect of Ba2+ -> Sr2+ and Ge4+ -> Si2+ cation substitutions on this magnetic

Optical and Mossbauer spectroscopy were used to put into evidence the morphological changes induced by the thermal treatments in the YAG:Eu nanocrystals synthesized by a sol-gel method. Both methods exhibit a drastic change of the monitored parameters (ratio of the areas of the electric and the magnetic dipole transitions - for optical spectroscopy and Mossbauer normalized area - for Mossbauer spectroscopy) at the phase transition amorphous-crystalline,

Nanosized magnetite particles embedded in polypyrrole matrix have been studied by Mössbauer and electron magnetic resonance spectroscopy. Comparison with as grown magnetite is made. Hyperfine fields distribution is determined and line shape resonance curves are discussed in terms of composite structure,sizes and treatments.

The hyperfine interactions and dynamics aspects in nanoparticles sys- tem of the xSnO2-(1-x)α-Fe2O3 (x = 0.0–1.0) have been investigated by 119Sn- Mössbauer and XRD techniques. The change revealed by the XRD (XRDSs) and Mössbauer spectra (MSs) vs. x was discussed in terms of the phase and lattice- dynamics changes. The evidences of the triple hyperfine magnetic fields’ distributions (MHFDs) and their dependencies x (