ELECTRON PARAMAGNETIC RESONANCE IN GEM QUALITY ZIRCON
宝石级锆石中Gd3+的电子顺磁共振

The electron paramagnetic resonance spectra of the natural single crystal of the tetragonal structure zircon containing impurity Gd3+ have been measured. The fine structure parameters were calculated using a least-squares fitting procedure. The hyperfine structure for odd isotopes 155Gd and 157Gd was clearly resolved, and the values of the hyperfine coupling constant to first order were given.