Electron paramagnetic resonance of a molecular defect in -irradiated IrO2 single crystals

Jiang-Tsu Yu, Ying Sheng Huang

研究成果: 雜誌貢獻期刊論文同行評審

2 引文 斯高帕斯(Scopus)

摘要

A very unique paramagnetic defect has been detected by electron paramagnetic resonance (EPR) in -ray irradiated IrO2 single crystals. The unpaired electrons of the defect species were observed to interact with a single Ir nucleus, and the magnetic symmetry is axial. The g? and the g values are very close to those known for Ir2+(5d7) in the low-spin state, but the Fermi contact contribution to the hyperfine splitting is much larger than usual. Moreover, the defect species was found to be preferentially oriented along the a axis (or the b axis, but not both) of the tetragonal rutile lattice. An [Ir-O]0 molecular defect is proposed to account for its EPR properties.

原文英語
頁(從 - 到)4281-4288
頁數8
期刊Physical Review B
40
發行號7
DOIs
出版狀態已發佈 - 1989

ASJC Scopus subject areas

  • Condensed Matter Physics

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