The local trigonal distortions beta - beta(0) for the substituting Cr3+ ions in garnet (YAlG, LuAlG and YGG) crystals are determined from a more reasonable method based on the studies of the zero-field splitting D, the first excited state splitting Delta((2)E) and the anisotropy of the g factor (characterized by Delta g = g(parallel to) - g(perpendicular to)). The results show that the local octahedral environments of the substituting Cr3+ ions are more regular than those of the host ions. This confirms the previous assumption for the local environment of Cr3+ in YGG based on the studies of only part of these spectral parameters.
部门归属
acad sinica,int ctr mat phys,shenyang 110015,peoples r china.;zheng, wc (reprint author), sichuan univ,dept mat sci,chengdu 610064,peoples r china
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