光致变色Mo3 +在SrTiO3中的PDKEEPAAA
EPR of photochromic Mo3+ in SrTiO3
摘要：
在SrTiO_3单晶中，用EPR方法在4.2K-77 K温度范围内观察到一个S = 3/2、核自旋I = 5/2的超精细相互作用的顺磁中心。杂质中心为Mo ~（3+）。在EPR谱中没有观察到由于105 K相变而引起的额外的谱线分裂。在4.2 K时，得到该杂质离子的自旋哈密顿参数：g = 1.9546 \pm 0.0010，A =（32.0 \pm 0.05）\times 10^-4 cm^-1。
英文摘要：
In single crystals of SrTiO_3, a paramagnetic center, characterized by S = 3/2 and hyperfine interaction with an I = 5/2 nuclear spin has been observed in the temperature range 4.2K-77K by means of EPR. The impurity center is attributed to Mo3+. No additional line splitting in the EPR spectrum due to the 105K phase transition has been observed. At 4.2K the following spin Hamiltonian parameters for this impurity ion were obtained: g = 1.9546\pm0.0010 and A = (32.0\pm0.05)\times10^-4 cm^-1.
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