摘要
Bi_(9-x)Fe_(5+x)Ti_(3)O_(2)7(x=0-3)compounds of bismuth layered perovskite structure have been successfully prepared by solid-state reaction method.X-ray diffraction(XRD)studies revealed the orthorhombic crystal structure of all the compounds.Impedance spectroscopy has been stu-died to characterize the electrical properties of polycrystalline Bi_(9-x)Fe_(5+x)Ti_(3)O_(2)7(x=0-3)compounds.The shape of complex impedance curves inferred the contribution of bulk and grain boundary effects on the electrical properties of the compounds.Temperature dependent magne-tization measurements were made from 2 K to 300 K.Narrow hysteresis loops observed at room temperature indicate antiferromagnetic behavior of the compounds.
