V-V Dimerization and Magnetic State of Cobalt Ions in Ilmenite-Type CoVO3

Sachiko Kamiyama, Ikuya Yamada, Masayuki Fukuda, Yuichi Okazaki, Takashi Nakamura, Takumi Nishikubo, Masaki Azuma, Hiroyuki Kimura, Hajime Yamamoto

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


The nature of chemical bonds determines the electronic and magnetic properties of compounds. A metal-metal bonding (V-V dimer) and its effect on the magnetism of ilmenite-type CoVO3 were studied. Polycrystalline CoVO3 samples were synthesized using a high-pressure synthesis method. Crystal structure refinement revealed that V-V dimers exist at temperatures below 550 K in the vanadium layers. Co2+ in CoVO3 exhibits an S = 3/2 state, whereas a Jeff = 1/2 state was reported in ilmenite-type CoTiO3. The existence of V-V dimers reduces the structural symmetry (from R3 to P1), which can change the magnetic ground state.

Original languageEnglish
JournalInorganic Chemistry
Publication statusAccepted/In press - 2022


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