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Influence of temperature on microstructure, structural and ferroelectricity evolution properties with nano and micrometer grain size in multiferroic HoMnO3 ceramics


Citation

Abdullah, Nor Hapishah and Azis, Raba'ah Syahidah and Hashim, Mansor and Ismail, Ismayadi and Hassan, Jelan and Mustaffa, Muhammad Syazwan and Ibrahim, Idza Riati (2017) Influence of temperature on microstructure, structural and ferroelectricity evolution properties with nano and micrometer grain size in multiferroic HoMnO3 ceramics. Journal of Materials Science: Materials in Electronics, 28 (21). 16053 - 16061. ISSN 0957-4522; ESSN: 1573-482X

Abstract / Synopsis

The influence of temperature on microstructural, structural and ferroelectric evolution properties of multiferroic holmium manganese oxide (HoMnO3) ceramics were investigated. HoMnO3 ceramics were synthesized using a mechanochemical reaction of Ho2O3 and Mn2O3powders in a high energy ball milling machine. The powder were sintered from 600 to 1250 °C with 50 °C increments. The results shows the microstructural, structural and ferroelectric hysteresis loop were observed to be dependent on sintering temperatures. The XRD characterization suggests an improvement of crystallinity with increasing sintering temperature. The hexagonal HoMnO3 were observed at temperature ≥1200 °C with the grain size of around 1600 nm. SEM micrographs showed larger grain size as the sintering temperature increased. The SEM results revealed a transformation of crystal structure occurs from orthorhombic to hexagonal at larger grain size regime. Polarization P—electric field Eferroelectric properties were observed to be enhanced with the increase of grain size through sintering temperature. The ferroelectric behavior was observed to change with the change of microstructure along with the structure transformation from orthorhombic to hexagonal. A complete systematic studies of the micron-nanometer grain size on microstructure-properties evolution of HoMnO3 multiferrroic ceramics is higlighted.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Science
Institute of Advanced Technology
DOI Number: https://doi.org/10.1007/s10854-017-7505-2
Publisher: Springer
Keywords: Temperature; Microstructure; Structural; Ferroelectricity evolution properties; Nano; Micrometer; Multiferroic HoMnO3; Holmium manganese oxide ceramic
Depositing User: Nurul Ainie Mokhtar
Date Deposited: 18 Apr 2019 14:51
Last Modified: 18 Apr 2019 14:51
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1007/s10854-017-7505-2
URI: http://psasir.upm.edu.my/id/eprint/62170
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