Low temperature optical study of Gadolinium molybdate and influence of an external magnetic field |
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Authors: | NG Theophanous T Sauder M Certier C Carabatos |
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Institution: | Laboratoire de Physique des Milieux Condensés, Faculté des Sciences, Metz, France |
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Abstract: | We describe the optical absorption spectrum of a single crystal of Gadolinium Molybdata (GMO) at the temperature of liquid helium. We observe a set of sharp lines in the near ultra violet region; we clasify the lines into three groups A, B, and C. We study the positions of the lines as functions of the orientation of the crystal relative to the polarization of the incident light and we investigate the Zeeman effect on the lines of the groups A and B. We suggest that the observed lines of all three groups are due to transitions between the ground state and the excited , and states of the Gd3+ ion in the crystal. |
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