Quasi-one-dimensional Ta0.96Fe0.0SS3 has been studied in magnetic fields applied at T = 4.2 K by Miissbauer spectrcxcopy. The amplitudes of the CDW's are increased. Also a phase transition is induced; SDW's then coexist with CDW's. When an external magnetic field is applied to charge-density-wave (CDW) conductors at low temperature new phenomena are sometimes observed. For example, Parilla et a...

A detailed study of spin dynamics in a 6 nm Fe3O4 ferrofluid using a substantially improved selective excitation double Mossbauer (SEDM) experimental technique has led to the unambiguous separation of static disorder, collective excitations, and moment reversals. Superparamagnetic spin flips have been observed through the appearance of an additional line in the SEDM spectrum, defining the energ...

In the first known kinetic application of the technique, synchrotron Fe-Mössbauer spectroscopy was used to follow the rate of heterogeneous electron transfer between aqueous reagents and a solid phase containing Fe. The solid, a synthetic Fe-enriched Fe(III)-bearing pyroaurite-like phase having terephthalate (TA) in the interlayer [Mg3Fe(OH)8(TA)0.5 2H2O], was reduced by Na2S2O4 and then reoxid...

We report on high-temperature crystallographic structure, magnetic and physical properties of chemically B-site disordered lead-bismuth iron tungstate, (PFW)1?x(BFO)x (which can be written as Pb0.8Bi0.2Fe0.728W0.264O3 (0.8PFW–0.2BFO) for x = 0.2 Pb0.7Bi0.3Fe0.762W0.231O3 (0.7PFW–0.3BFO) 0.3) or PBFW), solid solutions through neutron diffraction (ND), magnetization, electron paramagnetic resonan...

The valence states of Fe atoms and the formation oxygen vacancies in substituted La 0.67 Sr 0.33 FeO 3-γ orthoferrite have been studied detail by low-temperature Mossbauer spectroscopy under removal. It has shown that averaged state is not revealed with a decreasing measurement temperature. This makes it possible to reveal 4+ ions. Analysis obtained data allows us conclude presence several Zeem...