D
Dongchun Li
Researcher at Yanshan University
Publications - 18
Citations - 1138
Dongchun Li is an academic researcher from Yanshan University. The author has contributed to research in topics: Float glass & Lattice constant. The author has an hindex of 11, co-authored 18 publications receiving 1019 citations.
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Journal ArticleDOI
Hardness of covalent crystals.
Faming Gao,Julong He,Erdong Wu,Shimin Liu,Dongli Yu,Dongchun Li,Siyuan Zhang,Yongjun Tian,Yongjun Tian +8 more
TL;DR: A semiempirical method for the evaluation of hardness of multicomponent crystals is presented and it is found that bond density or electronic density, bond length, and degree of covalent bonding are three determinative factors for the hardness of a polar covalents crystal.
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Phase transformation of melamine at high pressure and temperature
TL;DR: In this article, the crystal structure, chemical bonding, and composition of the melamine pyrolysate were studied by X-ray diffraction (XRD), Fourier transform infrared spectra (FTIR) and combustion elemental analysis.
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Mössbauer spectroscopy and chemical bonds in BaFe12O19 hexaferrite
TL;DR: A semi-empirical model based on the Phillips theory of bonding has been developed for quantitative explanation of the Mossbauer isomer shifts of Fe ions in BaFe12O19 crystals as mentioned in this paper.
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Orthorhombic B2CN crystal synthesized by high pressure and temperature
Julong He,Yongjun Tian,Dongli Yu,T.S. Wang,S.M. Liu,L.C. Guo,Dongchun Li,X.P. Jia,Lixue Chen,Guangtian Zou,O. Yanagisawa +10 more
TL;DR: In this article, an orthorhombic B2CN powder with turbostratic structure was prepared by using melamine and boric acid, and a strong absorption band from 1088 to 1385 cm −1 was observed by infrared measurement.
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First principles study on the properties of p-type conducting In:SnO2
TL;DR: In this paper, the thermal stability of p-type conducting In:SnO2 has been investigated by first-principle calculations and it has been shown that the lattice constant expands in a distorted rutile structure with the increase of indium content.