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 ...

Review discusses some special questions of physics of composite media (metamaterials), which are formed by elements made from natural materials of two kinds. The first ones are “carriers of permittivity” and are presented by ...