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New Physics Research Study Results Reported from Hanoi University of Technology (Annealing study of amorphous bulk and nanoparticle iron using...

September 9, 2014



New Physics Research Study Results Reported from Hanoi University of Technology (Annealing study of amorphous bulk and nanoparticle iron using molecular dynamics simulation)

By a News Reporter-Staff News Editor at Physics Week -- Fresh data on Physics Research are presented in a new report. According to news reporting from Hanoi, Vietnam, by VerticalNews journalists, research stated, "Annealing study of amorphous bulk and nanoparticle iron at temperatures from 500 K to 1000 K has been carried out using molecular dynamics (MD) simulations. The simulation is performed for models containing 10(4) particles Fe at both crystalline and amorphous states."

The news correspondents obtained a quote from the research from the Hanoi University of Technology, "We determine changes of the potential energy, pair radial distribution function (PRDF) and distribution of coordination number (DCN) as a function of annealing time. The calculation shows that the aging slightly reduces the potential energy of system. This result evidences that the amorphous sample undergoes different quasi-equilibrated states during annealing. Similar trend is observed for nanoparticles sample. When the samples are annealed at high temperatures we observe the crystallization in both bulk and nanoparticle. In particular, the system undergoes three stages. At first stage the relaxation proceeds slowly so that the energy of system slightly decreases and the samples structure remains amorphous. Within second stage a structural transformation occurs which significantly changes PRDF and DCN for the relatively short time. The energy of the system is dropped considerably and the amorphous structure transforms into the crystalline."

According to the news reporters, the research concluded: "Finally, the crystalline sample undergoes the slow relaxation which reduces the energy of system and eliminates structural defects in crystal lattices."

For more information on this research see: Annealing study of amorphous bulk and nanoparticle iron using molecular dynamics simulation. International Journal of Modern Physics B, 2014;28(23):155-171. International Journal of Modern Physics B can be contacted at: World Scientific Publ Co Pte Ltd, 5 Toh Tuck Link, Singapore 596224, Singapore. (World Scientific Publishing - www.worldscientific.com/; International Journal of Modern Physics B - www.worldscinet.com/ijmpb/ijmpb.shtml)

Our news journalists report that additional information may be obtained by contacting P.H. Kien, Hanoi Univ Technol, Dept. of Computat Phys, Hanoi, Vietnam. Additional authors for this research include M.T. Lan, N.T. Dung and P.K. Hung.

Keywords for this news article include: Hanoi, Vietnam, Asia, Molecular Dynamics, Physics, Physics Research

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Source: Physics Week


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