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사파이어의 Fe³^+ -center에 대한 ESR 연구
한찬수,황인섭 순천향대학교 기초과학연구소 2000 순천향자연과학연구 논문집 Vol.6 No.2
An electron spin resonance study of the Fe3+-center in Sapphire has been carried out at room temperature employing the JEOL JE-TE100 X-band spectrometer. The spin Hamiltonian parameters of the center are determined from the measurements using the least-squares method. The sample was prepared from a synthetic corundum doped with iron and titanium, which was grown in the Korean Research Institute of Chemical Technology in Taedok Science Town. It is found that the c-axis is made an angle of about 63˚ with the growing axis of the crystal. All 190 experimental resonance points are used to fit the ESR parameters, the data are well consistent with our calculations with the parameters. There are still unidentified ESR signals in the sample.