Multifunctional behaviour of mesoporous LiNbO3

Banerjee, Shilpi ; Kumar Bhunia, Manas ; Bhaumik, Asim ; Chakravorty, Dipankar (2012) Multifunctional behaviour of mesoporous LiNbO3 Journal of Applied Physics, 111 (5). 054310-1-054310-6. ISSN 0021-8979

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Mesoporous LiNbO3 nanoparticles with BET surface area 185 m2 g−1 were synthesized by using Pluronic P123 as soft template. The samples showed three functionalities, viz., photoluminescence, ferroelectricity, and ferromagnetism. Room temperature photoluminescence was observed at 390 nm wavelength due to oxygen vacancy. The mesoporous LiNbO3 showed ferromagnetic behavior at room temperature. Ferroelectric behavior of the samples was confirmed from the P-E hysteresis loop measurement. The samples showed a magneto-dielectric effect with the dielectric constant increasing by ∼4.5% for an applied magnetic field of 10 kOe due to magnetostriction of the material which changed the lattice parameter to bring about an increase in the dipole moment of the unit cell.

Item Type:Article
Source:Copyright of this article belongs to American Institute of Physics.
Keywords:Dielectric Hysteresis; Ferroelectric Materials; Ferromagnetic Materials; Lattice Constants; Lithium Compounds; Magnetic Moments; Magnetic Particles; Magnetostriction; Mesoporous Materials; Nanofabrication; Nanomagnetics; Nanoparticles; Nanoporous Materials; Permittivity; Photoluminescence; Vacancies (Crystal)
ID Code:96489
Deposited On:21 Dec 2012 10:16
Last Modified:21 Dec 2012 10:16

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