Multiferroic behaviour of nanoporous BaTiO3

Banerjee, Shilpi ; Datta, Anindya ; Bhaumik, Asim ; Chakravorty, Dipankar (2011) Multiferroic behaviour of nanoporous BaTiO3 Journal of Applied Physics, 110 (6). 064316_1-064316_6. ISSN 0021-8979

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Nanoporous BaTiO3 particles with an average diameter of 27 nm have been synthesized using a soft template based on poloxamer. The pore width has been found to be ~10 nm. The nanoporous particles have a surface area of 107 m2gm−1. This introduces a large surface area leading to the creation of a large number of oxygen vacancies. The latter contributes to the ferromagnetic behavior of the nanoparticles. A multiferroic property was exhibited by these particles. The oxygen vacancy concentration decreased as the BaTiO3 particle size increased. The magnetization decreased with an increase in the particle size. A magnetodielectric parameter of 11% has been observed in this system corresponding to an applied magnetic field of 10 kOe.

Item Type:Article
Source:Copyright of this article belongs to American Institute of Physics.
Keywords:Amorphous Magnetic Materials; Barium Compounds; Ferroelectric Materials; Ferroelectricity; Ferromagnetic Materials; Magnetic Particles; Magnetisation; Magnetoelectric Effects; Multiferroics; Nanofabrication; Nanomagnetics; Nanoparticles; Nanoporous Materials; Particle Size; Vacancies (Crystal)
ID Code:65702
Deposited On:17 Oct 2011 10:40
Last Modified:17 Oct 2011 10:40

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