supported by the National Natural Science Foundation of China (Grant Nos. 90922003,51172236,and 50872135);the Knowledge Innovation Program of the Chinese Academy of Sciences (Grant No. YYYJ-1002)
An iterative method is used to find the values of the Hamiltonian parameters for Yb^3+ in a given low-symmetry crys- talline site. Samples of Yb^3+ :RETaO4 (RE = Gd, Y, and Sc) were prepared and their structures ...
Project supported by the National Natural Science Foundation of China (Grant Nos. 90922003,51172236,and 50872135);the Knowledge Innovation Program of the Chinese Academy of Sciences (Grant No. YYYJ-1002)
The crystal structural parameters of Nd ^3+-doped rare earth orthotantalate Gd x Lu 1 x TaO 4(x = 0.85) are determined by applying the Rietveld refinement to its X-ray diffraction,and its emission and excitation sp...
National Natural Science Foundation of China under Grants(50772112,90922003,50872135);the Director Foundation of Anhui Institute of Optics and Fine Mechanics
Project supported by the National Natural Science Foundation of China(Grant Nos.50772112,90922003,and50872135);Provincial Natural Science Fund of Anhui,China(Grant No.08040106820);the Knowledge Innovation Program of the Chinese Academy of Sciences(Grant No.YYYJ-1002)
The Yb3+ doped Ba2YB'O6 (B'= Ta5+, Nb5+) were prepared by high temperature solid-state reaction method, their structures were determined by x-ray diffraction and refined by Rietveld method. The diffuse reflecti...
Project supported by the National Natural Science Foundation of China(Grant Nos.50772112 and 50872135);the Natural Science Foundation of Anhui Province of China(Grant No.08040106820);the Knowledge Innovation Program of the Chinese Academy of Sciences(Grant No.YYYJ-1002)
A method to compute the numerical derivative of eigenvalues of parameterized crystal field Hamiltonian matrix is given, based on the numerical derivatives the general iteration methods such as Levenberg-Marquardt, New...