Low temperature short-range ordering caused by Mn2 + doping of Rb3H(SO4)2

The low temperature behaviour of Rb3H(SO4)2 and Rb3D(SO4)2 and their doped analogues was investigated by means of their dielectric response. Electron paramagnetic resonance was used to control the impurity concentration. Influence of different admixtures on ferroic properties is discussed. It has been shown that an appropriately chosen impurity in doped Rb3H(SO4)2 can lead to a short-range ordering similar to that observed for doped incipient ferroelectric-like SrTiO3 and KTaO3.