A novel LiAlO2:Fe single crystal with good quality was grown by Czochralski method.The spectroscopic characteristics and structure of the crystal were studied by absorption spectrum,photoexcitation and emission spectra,and X-ray excited luminescence (XEL) spectra.The results show that the crystal is transparent in the visible-infrared range,while has absorption band related to the Fe doping in deep ultraviolet range,and the crystal shows the 710 nm typical Fe3+ peak when it is exited by 266 nm light.For the similarity of excitation and emission spectra to LiAlO2:Fe phosphor,the Fe3+ ions occupied the octahedral sites of Li+ in γ-LiAlO2 crystal.The XEL spectra show a strong emission band peaked at 318 nm for γ-LiAlO2 cryatal.It was concluded that the emission band at 318 nm should be related to F+ centers resulted from the loss of Li2O,whereas the Fe doping could restrain the evaporation of Li2O and improve the thermal stability of γ-LiAlO2 crystal.