Electron paramagnetic resonance study of iridium in forsterite. - Archive ouverte HAL Access content directly
Journal Articles Physics and Chemistry of Minerals Year : 2003

Electron paramagnetic resonance study of iridium in forsterite.

(1) , (2)
1
2

Abstract

Electron paramagnetic resonance of Ir2+ in forsterite is studied at Q-band frequency and room temperature. There are four equivalent spectra superimposed along the three crystallographic axes. The individual spectrum consists of four hyperfine lines of approximately equal intensity separated from each other by 42 G; one axis of the g tensor is near the c axis. Ir2+ is certainly substituted for Mg2+. Because of the fourfold degeneracy of the EPR spectrum, it may be suggested that iridium occurs at M1. Taking into account that one eigenvector of the g tensor is nearly parallel to c, it seems also possible that the substitution takes place at the M2 position. In this case, the lattice relaxation of the crystal structure around Ir2+ at M2 must break the point symmetry m at M2.

Keywords

Dates and versions

hal-00069478 , version 1 (17-05-2006)

Identifiers

Cite

Jean-Michel Gaite, H. Rager. Electron paramagnetic resonance study of iridium in forsterite.. Physics and Chemistry of Minerals, 2003, 30, pp.(10 ) 628 630. ⟨10.1007/s00269-003-0360-0⟩. ⟨hal-00069478⟩
39 View
0 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More