Mössbauer Spectroscopy X-Ray Diffraction and SEM Studies on Multiferroic Bi₅Ti₃FeO₁₅Ceramics

Abstract

Magnetoelectric multiferroics are materials which exhibit both magnetic order and ferroelectricity in the same phase. Multiferroic materials, where ferroelectricity and magnetism coexist, were extensively studied. This class of materials offers a large application potential for new devices due to the two coupled degrees of freedom based on the local off-centered distortion and the electron spin. The studied Bi 5 Ti 3 FeO 15 ceramics was prepared by conventional synthesis and hot uniaxial pressing reaction applying the conventional mixture of TiO 2 , Fe 2 O 3 and Bi 2 O 3 oxides as precursor materials. The present work focuses on the structure analysis of multiferroic Bi5Ti3FeO15 ceramics performed by X-ray diffraction method, scanning electron microscopy and the Mössbauer spectroscopy methods.

Piezoresponse force microscopy investigations of Aurivillius phase thin films

“…Such morphology is characteristic of layer structures of the Aurivillius type. 46 The SEM image of BTO annealed at 700°C reveal lamellar grains of different orientation overlapping one another. The SEM micrograph of BTFO annealed at 850°C shows the formation of aggregates of smaller particles, along with unevenly distributed discrete platelike grains.…”

Synthesis and characterization of Fe2O3-Bi2O3-TiO2nanoparticles and its magnetic properties

“…Especially hematite and maghemite, have been used as pigments since ancient times to give pottery reddish coloration. Similar to hematite, magnetite is a semiconductor with a band gap of around 2 eV, although the specific value of the gap based on the electron spin (4,5) . The iron atom has a strong magnetic moment in its 3D orbitals, due to four unpaired electrons.…”