Morphology of Bi2O3 Nanowires and Nanoflowers in the Synthesis of MnBi Alloys

Thanida Charoensuk; Chitnarong Sirisathitkul; Upsorn Boonyang; Pongsakorn Jantaratana

doi:10.4028/www.scientific.net/SSP.283.124

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HomeSolid State PhenomenaSolid State Phenomena Vol. 283Morphology of Bi2O3 Nanowires and Nanoflowers in...

Morphology of Bi₂O₃ Nanowires and Nanoflowers in the Synthesis of MnBi Alloys

Abstract:

High temperature phase (HTP) MnBi alloys were formed using the arc-melting method. The drastic difference in the melting points of Mn and Bi resulted in non-homogeneity. The MnBi, Mn, Bi and O were detected by energy dispersive spectrometry (EDS). The field emission scanning electron microscope (FESEM) revealed the morphology of each phase. The rod-like and flower-like nanostructures were consistent with Bi₂O₃ as indicated by EDS and X-ray diffactometry. The HTP MnBi was transformed to the low temperature phase (LTP) following the annealing process. The remaining Bi and Mn are susceptible to oxidation leading to the subsequent formation of Bi₂O₃ as well as MnO. Whereas LTP MnBi alloys are useful for their hard magnetic properties, Bi₂O₃ nanowire is receiving attention for potential applications in optoelectronic devices.

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Solid State Phenomena (Volume 283)

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124-131

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https://doi.org/10.4028/www.scientific.net/SSP.283.124

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September 2018

Authors:

Thanida Charoensuk*, Chitnarong Sirisathitkul, Upsorn Boonyang, Pongsakorn Jantaratana

Keywords:

Arc-Melting, Bi₂O₃, High Temperature Phase, Low Temperature Phase, MnBi Alloys, Nanostructures

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