Studies of the Hume-Rothery-type phase stabilization mechanism working beyond bonding types

2016 Fiscal Year Final Research Report

• Project/Area Number: 26420668
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Physical properties of metals/Metal-base materials
• Research Institution: Nagoya Industrial Science Research Institute
• Principal Investigator: Mizutani Uichiro 公益財団法人名古屋産業科学研究所, 研究部, 上席研究員 (00072679)
• Co-Investigator(Renkei-kenkyūsha): SATO Hirokazu 愛知教育大学, 教育学部, 名誉教授 (20024094) ; INUKAI Manabu 名古屋工業大学, 大学院工学研究科, 産学官連携研究員 (50437050)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 金属電子論 / 干渉効果 / ヒューム・ロザリー電子濃度則 / 擬ギャップ形成機構 / 結合形態 / 軌道混成効果

Outline of Final Research Achievements

By extracting the interference phenomenon of itinerant electrons with set of lattice planes, we could demonstrate the validity of the Hume-Rothery-type phase stabilization mechanism, regardless of the degree of metallic, covalent and ionic bonding types involved. We have also succeeded in reliably determining the number of itinerant electrons per atom, e/a, for 54 elements in the periodic table. It covers 3d-, 4d- and 5d-transition metal elements. The results have been reported as a book entitled "The Physics of the Hume-Rothery Electron Concentration Rule" in Japanese (Uchida Rokakuho, Japan, 2015) and also as the review article in English ("Crystals", 7, 1-112, doi:10.3390/cryst7010009).

Free Research Field

金属電子論