Absorption Spectra of Cr^<3+> in Al_2O_3 : Part A. Theoretical Studies of the Absorption Bands and Lines

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概要

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• In the frame-work of the crystalline field theory, the excited states of Cr^<3+> in Al_2O_3 and the optical transitions to these states are studied taking into account the effect of trigonal field and spin-orbit interaction. Initial splittings and optical anisotropies of the broad band (transitions to quartet states) and the sharp lines (transitions to doublet states) are examined. For the sharp lines, the Zeeman effect is also examined and the Zeeman patterns are predicted. Comparing these theoretical results with those of the experimental ones given in Part B, the assignments of U, Y bands and R_1, R_2, B_1, B_2 lines have been established. It is shown that the g-shifts of the excited doublets observed in the Zeeman patterns can also be explained under such assignments. It is also shown that the experimental data of the optical absorption can be reasonably connected to those of the paramagnetic resonance absorption.

• 社団法人日本物理学会の論文
• 1958-08-05

著者

• TANABE Yukito

  Department of Applied Physics,Faculty of Engineering,The University of Tokyo

• Tanabe Yukito

  Department Of Applied Physics Faculty Of Engineering The University Of Tokyo

• Sugano Satoru

  Department Of Physics Faculty Of Science University Of Tokyo:(present)bell Telephone Laboratory

• Sugano Satoru

  Department Of Physics Faculty Of Science University Of Tokyo

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