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Citation: Lei Yu, Cheng Zhao-Nian, Tang Ding-Yuan. A Study of Structure in β-BAB₂O₄ Melt by Molecular Dynamics Simulation[J]. Acta Physico-Chimica Sinica, ;1996, 12(06): 481-484. doi: 10.3866/PKU.WHXB19960601 shu

A Study of Structure in β-BAB₂O₄ Melt by Molecular Dynamics Simulation

1.
Shanghai Institute of Metallurgy,Chinese Academy of Sciences,Shanghai 200050

Received Date: 4 January 1996
Available Online: 15 June 1996

The local structure of β-BaB2O4 melt at 1400 K has been studied by using the method of molecular dynamics simulation. The radial functions simulated show agreement with the recent experimental results of X-ray diffraction. The calculation of bond order parameters indicates that the local structure of the melt can be described by the model of linear combination of 0.11 tetrahedrons BO4 and 0.89 planar triangles BO3. In the process of crystal growth the existing of many planar triangles BO3 in the melt maybe favorable for the forming of planar boroxol rings B3O6 near the crystal interface. The statistics of rings and chains have been done and some isolated BO3, pyroborate B2O5,chain（－B－O－）n and isolated B3O6 rings are found in the melt which is in agreement with HTRS experimental results. A large (－B－O－)n network is also found and it is suggested that the planar BO3 units are mainly existed in the network but isolated.
- Molecular dynamics simulation,
- β-BAB₂O₄ melt
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A Study of Structure in β-BAB2O4 Melt by Molecular Dynamics Simulation

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A Study of Structure in β-BAB₂O₄ Melt by Molecular Dynamics Simulation