Optical properties of bulk gadolinium in the range 0.5–3.1 eV
V. P. GnezdilovPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSRN.M. ZvyaginaPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSRG.S. Nikol'skiiPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSRV. V. EremenkoPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSRA. B. BeznosovPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR
ABI
Аннотация
The high-frequency electrical conductivity of bulk polycrystalline gadolinium was measured in the spectral region 0.5–3.1 eV at temperatures in the range 77–293° K. At room temperature, the gadolinium spectrum consists of two bands with energies of 1.1 and 1.6 eV. The transition to the ferromagnetic state results in the appearance of a new absorption band with an energy of about 0.66 eV. Possible causes of such behavior of the optical conductivity spectrum are discussed.
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