Issue 71, 2015

Structural characterization and multiferroic properties of hexagonal nano-sized YMnO3 developed by a low temperature precursor route

Abstract

Multiferroic YMnO3 nanoparticles with a narrow size distribution and high specific surface area (304 m2 g−1) were synthesized using a low temperature polymeric citrate precursor route for the first time. The crystal structure of the monophasic hexagonal YMnO3 nanoparticles was estimated by powder X-ray diffraction studies. The transmission and scanning electron microscopic studies revealed nearly hexagonal nanostructures with an average grain size of ∼48 nm. The optical band gap was found to be 3.7 eV and photoluminescence studies also suggest the wide band gap semiconducting nature of YMnO3. DC-magnetization studies of YMnO3 nanoparticles show ferromagnetic hysteresis with saturation magnetization of 21.19 emu g−1. The appearance of a room temperature ferroelectric loop at 50 kHz has been observed for the first time with an improved remanent polarization of 0.0084 μC cm−2. The dielectric properties on sintered disks were also investigated as a function of frequency and temperature.

Graphical abstract: Structural characterization and multiferroic properties of hexagonal nano-sized YMnO3 developed by a low temperature precursor route

Article information

Article type
Paper
Submitted
14 May 2015
Accepted
26 Jun 2015
First published
26 Jun 2015

RSC Adv., 2015,5, 58065-58071

Author version available

Structural characterization and multiferroic properties of hexagonal nano-sized YMnO3 developed by a low temperature precursor route

T. Ahmad, I. H. Lone and M. Ubaidullah, RSC Adv., 2015, 5, 58065 DOI: 10.1039/C5RA09038E

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