Magnetic and electrical characterization of multiferroic BiFeO₃

Authors

Janina Rhea A. Lazo ⋅ PH Materials Science and Engineering Program, University of the Philippines Diliman
Klarisse R. Gepilano ⋅ PH Materials Science and Engineering Program, University of the Philippines Diliman
Marvin T. Laguerta ⋅ PH Materials Science and Engineering Program, University of the Philippines Diliman
Roland V. Sarmago ⋅ PH National Institute of Physics, University of the Philippines Diliman

Abstract

Bismuth ferrite was synthesized via classic solid state reaction at 800°C. XRD results show high purity, highly crystalline BiFeO₃ with distorted rhombohedral perovskite structure. An alternating capacitive-inductive behavior is seen in the Smith chart. The synthesized BiFeO₃ was found to have high dielectric constants, 70-100 at frequencies 300 kHz to 400 MHz, and 200-600 at higher frequencies before reaching its self-resonance frequency of 600 MHz. The self-resonance frequency is quite low compared with other types of capacitors which could be due to the high residual inductive effect of the bismuth ferrite. Inductive Q factors at higher frequencies reached a maximum of 40. These high dielectric constants and high inductive effects of the bismuth ferrite sample are manifestations of its being a simultaneous perovskite ferroelectric and antiferromagnetic.

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Issue

2009: Proceedings of the 27th Samahang Pisika ng Pilipinas Physics Congress

Article ID

SPP-2009-PA-41

Section

Poster Session PA

Published

2009-10-28

How to Cite

[1]

JRA Lazo, KR Gepilano, MT Laguerta, and RV Sarmago, Magnetic and electrical characterization of multiferroic BiFeO3, Proceedings of the Samahang Pisika ng Pilipinas 27, SPP-2009-PA-41 (2009). URL: https://proceedings.spp-online.org/article/view/SPP-2009-PA-41.