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Investigation of Multiferroic Properties & Electrical Properties of Manganese doped Lanthanum Ferrite Nanoparticles

Students & Supervisors

Student Authors
Imtiaz Ahmed
BSc in Industrial & Production Engineering, FE
Afia Farzana
BSc in Computer Science & Engineering, FST
Supervisors
Dr. Shovan Kumar Kundu
Assistant Professor, Faculty, FST

Abstract

In recent years, a small word with giant potential has attracted attention to the scientists and researchers of all sectors of science and technology. The word is ‘nano’ which possesses a tiny scale range that is larger than the level of atoms and molecules but within the range of 1-100 nanometers. Multiferroic materials (mostly known as multiferroics) have become the center of attention to researchers, scientists, and industrialists because of their potential application and interesting physics behind this. Multiferroics exhibit at least two primary ferroic order among ferromagnetism, ferroelectricity and ferroelasticity in a single phase. The multiferroic nanomaterials have attracted the attention of the scientists and researchers because of the coupled behavior along with the increase in surface area compared to volume as particles get smaller. Lanthanum ferrite (LaFeO3) is a member of the centrosymmetric rare earth ortho-ferrite family (having a distorted orthorhombic perovskite structure), possesses magnetically tunable ferroelectricity. Phase formation of the LaFeO3 was confirmed by XRD pattern along with Rietveld refinement. Average particle size was calculated using lognormal fitting from TEM image. Magnetic property of LaFeO3 has been demonstrated by magnetization verses magnetic field (M-H) curve at room temperature. The sample was showing hysteresis behavior. The well-shaped polarization verses electric field (P-E) loop confirms the presence ferroelectric nature in the sample. The data was recorded at 300K temperature and 50Hz frequency. Weak ferroelectric characteristic was observed due to the canted antiferromagnetic ordering of Fe3+ cations. DC resistivity has been analysed by Mott’s variable range hopping (VRH) model. AC conductivity mechanism as function of frequency (20Hz ≤ f ≤ 1MHz) and temperature (303K ≤ T ≤ 573K) was explained by correlated barrier hopping (CBH) model. Different types of thermal analysis like differential thermal analysis (DTA) and Thermogravimetric analysis (TGA) are also studied.

Keywords

Multiferroics Lanthanum Ferrite Magnetic Properties Electrical Properties.

Publication Details

  • Type of Publication: Conference
  • Conference Name: International Conference on Physics-2024
  • Date of Conference: 05/09/2024 - 05/11/2024
  • Venue: Atomic Energy Centre, Dhaka
  • Organizer: Bangladesh Physical Society
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