Coupling between the magnetism and dielectric properties in Eu1-xBaxTiO3

The dielectric constant of the quantum paraelectric EuTiO3 exhibits a sharp decrease at about 5.5 K, at which temperature antiferromagnetic ordering of the Eu spins simultaneously appears, indicating coupling between the magnetism and dielectric properties. A similar feature has also been detected in Eu1-xBaxTiO3 (0