Phase Formation, Morphology and Magnetic Properties of PbTiO₃–Fe₂O₃ Heterostructure Ceramics

Abstract

Multiferroic (1-x)PbTiO₃−(x)Fe₂O₃ composite materials, when x = 0.1, 0.3, 0.5, 0.7 and 0.9, were prepared by solid-state reaction technique. PbTiO₃ powder was synthesized with a calcination temperature of 900 °C in air. Phase formation, densification, morphology and magnetic properties of (1-x)PbTiO₃−(x)Fe₂O₃ composites were investigated and discussed. The XRD technique was used to analyze the phase formation behavior of all specimens which shown the Fe₂O₃ accumulate phase with increasing Fe₂O₃ content. Densities of the sintered ceramics trend to decrease, possibly caused by an anomaly morphology of the specimens that related to particle packing. Also besides, the superparamagnetic behaviors were observed using a Vibrating Sample Magnetometer (VSM), which reached the maximum value at x = 0.7. In conclusion, Fe₂O₃ addition has been found to affect the phase formation, microstructure and magnetic properties of PbTiO₃ ceramics.

Keywords:

• Phase information
• microstructure
• heterostructure ceramics
• PbTiO₃-Fe₂O₃

Additional information

Funding

This work was financially supported by the Thailand Research Fund (TRF) under the TRF Research Career Grant No. RSA5880056. This research was also supported by the Unit of Excellence on Sensors Technology, School of Science and the University of Phayao.