Magnetic Field Dependence of Dielectric Constant and Resistivity of Eu sub(0.98)Ba sub(0.02)TiO sub(3)

Polycrystalline perovskite Eu sub(0.98)Ba sub(0.02)TiO sub(3), in which Eu super(2+): 4f super(7) spins order antiferromagnetically below $T_{N} = 4.6$ K, shows a large positive magnetodielectric effect (MDE) and a negative magnetoresistance (MR) in the paramagnetic state. The MDE $\sim +120$ % and MR $\sim -91$ % for $f = 1$ kHz at $T =10$ K and under $\mu _{0}H = 7$ T. The field dependence of the MDE and the MR is distinct. While the magnitude of the MR increases rapidly for $\mu _{0}H 3$ T, the MDE shows a small value for $\mu _{0}H