We present a comparative study of the low-dimensional compounds α- and β-TeVO₄. Our data clearly show that the change in the local coordination geometry of V⁴⁺ ions comparing α- and β-TeVO₄ leads to a drastic differences in ...

We report Raman light scattering in the phase separated superconducting single crystal Rb₀.₇₇Fe₁.₆₁Se₂ with Tc = 32 K over a wide temperature region 3–500 K. The observed phonon lines from the majority vacancy ordered ...

The crystal structure of the manganite Nd₀.₅Sr₀.₅MnO₃ is studied at temperatures T=300 and 77.3 K by means of an x-ray diffractometer. It is shown that the transition from the ferromagnetic metallic state to the antiferromagnetic ...