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Lei Zhang, Shichun Li. Empirical Atom Model of Vegard's Law[J]. Physica B: Condensed Matter, 2014, 434: 38-43. ѧУûÓÐÂò²éѯµÄ¿â£¬ËùÒÔÏò³æÓÑÇóÖú¡£Ç뽫ÊÕ¼µÄÒ³ÃæpdfÎĵµ´«¸øÎÒ£¬ÐÐô£¿Ê®·Ö¸Ðл£¡ÎÒµÄÓÊÏäΪzhleile2002@163.com. |
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FN Thomson Reuters Web of Science™ VR 1.0 PT J AU Zhang, L Li, SC AF Zhang, Lei Li, Shichun TI Empirical atom model of Vegard's law SO PHYSICA B-CONDENSED MATTER LA English DT Article DE Vegard's law; Electron density; Atom radius; Thomas-Fermi-Dirac; Cohesive energy; Lattice parameter ID SOLID-SOLUTIONS; LATTICE-PARAMETER; ALLOYS; DEVIATIONS; CONSTANT AB Vegard's law seldom holds true for most binary continuous solid solutions. When two components form a solid solution, the atom radii of component elements will change to satisfy the continuity requirement of electron density at the interface between component atom A and atom B so that the atom with larger electron density will expand and the atom with the smaller one will contract. If the expansion and contraction of the atomic radii of A and B respectively are equal in magnitude, Vegard's law will hold true. However, the expansion and contraction of two component atoms are not equal in most situations. The magnitude of the variation will depend on the cohesive energy of corresponding element crystals. An empirical atom model of Vegard's law has been proposed to account for signs of deviations according to the electron density at Wigner-Seitz cell from Thomas-Fermi-Dirac-Cheng model. (C) 2013 Elsevier B.V. All rights reserved C1 [Zhang, Lei; Li, Shichun] China Univ Petr, Coll Electromech Engn, Dept Mat, Qingdao 266555, Peoples R China. [Zhang, Lei] Yantai Univ, Sch Electromech Automobile Engn, Yantai 264005, Shandong, Peoples R China. RP Zhang, L (reprint author), Yantai Univ, Sch Electromech Automobile Engn, 30 Qing Quan Rd, Yantai 264005, Shandong, Peoples R China. EM zhleile2002@163.com FU National Natural Science Foundation of China [50371059] FX This work was supported by the National Natural Science Foundation of China under Grant No. 50371059. NR 33 TC 0 Z9 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 EI 1873-2135 J9 PHYSICA B JI Physica B PD FEB 1 PY 2014 VL 434 BP 38 EP 43 DI 10.1016/j.physb.2013.10.066 PG 6 WC Physics, Condensed Matter SC Physics GA 281QU UT WOS:000329116900007 ER EF |
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