Investigation of the crystal structure, magnetic properties and dielectric properties of Ho substituted Bi0.90La0.10FeO3 multiferroics

Abstract

The change in structural behaviour, magnetic measurement & dielectric characteristics of polycrystalline Bi0.90-xLa0.10HoxFeO3(0.15& 0.15) and labelled as LH15 and LH20 respectively) which were prepared using method of the solid-state reaction, have been investigated. The powder X-ray diffraction and Rietveld refinement of the XRD spectrum indicates that Bi0.90La0.10FeO3multiferroics have single phase in R3c. Rietveld refined spectrum of the XRD conclude that holmium substitution at A-site for the samples LH15 is crystallized as combo of rhombohedral R3c and orthorhombic Pbam space group. Holmium substitution for LH20 has changed the rhombohedral R3c symmetry of Bi0.90La0.10FeO3 to the orthorhombic Pbam symmetry. The magnetic behaviour was studied by recording magnetization with magnetic up to ±6kOe. Weak ferromagnetic behaviour of all samples attributes that co-doping effectively concealed spiral spin configuration by altering the canting angle. Dielectric behaviour of prepared ceramic compounds was carried by impedance analyser within frequency ranged 100Hz - 7MHz for different temperatures.The change in structural behaviour, magnetic measurement & dielectric characteristics of polycrystalline Bi0.90-xLa0.10HoxFeO3(0.15& 0.15) and labelled as LH15 and LH20 respectively) which were prepared using method of the solid-state reaction, have been investigated. The powder X-ray diffraction and Rietveld refinement of the XRD spectrum indicates that Bi0.90La0.10FeO3multiferroics have single phase in R3c. Rietveld refined spectrum of the XRD conclude that holmium substitution at A-site for the samples LH15 is crystallized as combo of rhombohedral R3c and orthorhombic Pbam space group. Holmium substitution for LH20 has changed the rhombohedral R3c symmetry of Bi0.90La0.10FeO3 to the orthorhombic Pbam symmetry. The magnetic behaviour was studied by recording magnetization with magnetic up to ±6kOe. Weak ferromagnetic behaviour of all samples attributes that co-doping effectively concealed spiral spin configuration by altering the canting angle. Dielectric behaviour of prepared ceramic compounds was carr...