TEM-EELS study of functional intermetallic compounds

2014 Fiscal Year Final Research Report

• Project/Area Number: 25820321
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Physical properties of metals/Metal-base materials
• Research Institution: Tohoku University
• Principal Investigator: SATO Yohei 東北大学, 多元物質科学研究所, 助教 (70455856)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: EELS / intermetallic compounds / d electronic structure / optical properties

Outline of Final Research Achievements

Intermetallic compounds consisting of group 10-12 elements (NiZn, PdZn, PtZn, PdCd, PtCd), which have d electronic structures similar with copper’s one, were investigated by electron energy-loss spectroscopy based on transmission electron microscopy in order to clarify an origin of the similarity of d electronic structure with copper. Increasing the atomic number of group 10 elements, increasing of interband transition energies attributed to d electrons of the intermetallic compounds was also observed, indicating the d electronic structures are correlated with the atomic number. This is due to overlapping of d electron wave functions of group 10 element. This founding indicates there is a possibility to control the physical functions and/or optical properties of the intermetallic compounds by tuning d electronic structures.

Free Research Field

物性物理