Results 191 to 200 of about 1,388,516 (221)
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Pramana, 2010
The electron paramagnetic resonance (EPR) parameters (the g factors, hyperfine structure constants and the superhyperfine parameters) for the tetragonal Ir2+ centre in NaCl are theoretically investigated from the perturbation formulas of these parameters for a 5d7 ion in tetragonally elongated octahedra.
Y. -X. Hu, S. -Y. Wu, X. -F. Wang, P. Xu
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The electron paramagnetic resonance (EPR) parameters (the g factors, hyperfine structure constants and the superhyperfine parameters) for the tetragonal Ir2+ centre in NaCl are theoretically investigated from the perturbation formulas of these parameters for a 5d7 ion in tetragonally elongated octahedra.
Y. -X. Hu, S. -Y. Wu, X. -F. Wang, P. Xu
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Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2015
The dependences of the EPR parameters on the local distortion parameters Δθ and ΔR as well as the crystal-field parameters have been studied by diagonalizing the 364×364 complete energy matrices for a tetragonal Er(3+) centre in the YVO4 and ScVO4 crystals. The results show that the local distortion angle Δθ and the fourth-order crystal-field parameter
Rui-Peng, Chai +3 more
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The dependences of the EPR parameters on the local distortion parameters Δθ and ΔR as well as the crystal-field parameters have been studied by diagonalizing the 364×364 complete energy matrices for a tetragonal Er(3+) centre in the YVO4 and ScVO4 crystals. The results show that the local distortion angle Δθ and the fourth-order crystal-field parameter
Rui-Peng, Chai +3 more
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The European Physical Journal D, 2014
Local structure and electron paramagnetic resonance (EPR) parameters (the g factors, g i , and the hyperfine structure constants A i , i = x, y, z) for the impurity Cu2+ centres in a (CH3)2NH2Al(SO4)2·6H2O (DMAAS) crystal are theoretically investigated ...
Hua-Ming Zhang, Wen-Bo Xiao, Xiong Wan
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Local structure and electron paramagnetic resonance (EPR) parameters (the g factors, g i , and the hyperfine structure constants A i , i = x, y, z) for the impurity Cu2+ centres in a (CH3)2NH2Al(SO4)2·6H2O (DMAAS) crystal are theoretically investigated ...
Hua-Ming Zhang, Wen-Bo Xiao, Xiong Wan
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Journal of Physics and Chemistry of Solids, 2015
Abstract The dependence of the EPR g-factors on the local structural parameter for a 4f11 configuration ion Er3+ in a trigonal crystal-field has been studied by diagonalizing the 364×364 complete energy matrices. Our studies indicate that the EPR spectra of the trigonal Er3+–VK centers in KMgF3 and KZnF3 may be attributed to the translation of the ...
Rui-Peng Chai +3 more
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Abstract The dependence of the EPR g-factors on the local structural parameter for a 4f11 configuration ion Er3+ in a trigonal crystal-field has been studied by diagonalizing the 364×364 complete energy matrices. Our studies indicate that the EPR spectra of the trigonal Er3+–VK centers in KMgF3 and KZnF3 may be attributed to the translation of the ...
Rui-Peng Chai +3 more
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Molecular Physics, 2008
A theoretical method for investigating the inter-relation between the EPR parameters and local structure has been established on the basis of the complete energy matrices for 3d3 configuration ions in both the trigonal and tetragonal ligand fields. By means of this method, the local structure of the octahedral Cr3+ centres in double molybdates series ...
Rui-Peng Chai +4 more
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A theoretical method for investigating the inter-relation between the EPR parameters and local structure has been established on the basis of the complete energy matrices for 3d3 configuration ions in both the trigonal and tetragonal ligand fields. By means of this method, the local structure of the octahedral Cr3+ centres in double molybdates series ...
Rui-Peng Chai +4 more
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Molecular Physics, 2014
The high-order perturbation formulas of spin-Hamiltonian parameters (g factors gi and hyperfine structure constants Ai, i = x, y, z) based on the two-mechanism model for d1 ions in rhombic tetrahedral clusters with the ground state are derived in this paper. In the model, besides the contributions to spin-Hamiltonian parameters due to the crystal-field
Yang Mei, Wen-Chen Zheng, Lin Zhang
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The high-order perturbation formulas of spin-Hamiltonian parameters (g factors gi and hyperfine structure constants Ai, i = x, y, z) based on the two-mechanism model for d1 ions in rhombic tetrahedral clusters with the ground state are derived in this paper. In the model, besides the contributions to spin-Hamiltonian parameters due to the crystal-field
Yang Mei, Wen-Chen Zheng, Lin Zhang
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Nuclear Physics News, 2005
One current trend in most branches of contemporary research is the adoption of large computing facilities, capable of calculating models of ever increasing complexity. This is particularly true for Nuclear Physics, a discipline that has often prompted the development of new theoretical and numerical methods that stimulated the advance of computing ...
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One current trend in most branches of contemporary research is the adoption of large computing facilities, capable of calculating models of ever increasing complexity. This is particularly true for Nuclear Physics, a discipline that has often prompted the development of new theoretical and numerical methods that stimulated the advance of computing ...
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The germinal centre B cell response to SARS-CoV-2
Nature Reviews Immunology, 2021Brian J Laidlaw, Ali H Ellebedy
exaly
Peripheral-nitrogen effects on the Ru1 centre for highly efficient propane dehydrogenation
Nature Catalysis, 2022, Jian Lin, Qiang Wan
exaly