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dz orbital character of polyhedra in complex solid-state transition-metal compounds
1Center for Functional Sensor & Actuator (CFSN), Research Center for Functional Materials, National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan. OHKUBO.Isao@nims.go.jp.
The electronic structure of transition-metal compounds is influenced by d orbitals. Specifically, the dz2 orbital
Area of Science:
- Solid State Chemistry
- Materials Science
- Computational Chemistry
Background:
- The d orbitals of transition metals are crucial for novel physical and chemical properties in compounds.
- Understanding d orbital character is key to designing advanced materials.
Purpose of the Study:
- To investigate the nature of d orbitals in various d0- and d1-complex transition-metal compounds.
- To explore the role of polyhedral geometry and connectivity on d orbital contributions.
Main Methods:
- Density functional theory (DFT) calculations were employed.
- Electronic structures of diverse transition-metal compounds (oxides, nitrides, sulfides) were analyzed.
Main Results:
- The dz2 orbital significantly contributes to the electronic structure near the Fermi level in nine complex transition-metal compounds.
- This contribution is consistent across different polyhedral geometries and connectivity types.
Conclusions:
- The dz2 orbital character near the Fermi level is a critical factor in developing novel properties.
- Designing and controlling the dz2 orbital is essential for advancing complex transition-metal materials.
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