Optical transmission spectra and electrical properties of langasite and langatate crystals as dependent on growth conditions |
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| Authors: | O. A. Buzanov N. S. Kozlova E. V. Zabelina A. P. Kozlova N. A. Siminel |
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| Affiliation: | 1.Fomos-Materials,Moscow,Russia;2.MISIS National University of Science and Technology,Moscow,Russia |
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| Abstract: | The optical transmission spectra and electrical properties of langasite (La3Ga5SiO14) and langatate (La3Ta0.5Ga5.5O14) single crystals are studied experimentally in relation to the oxygen concentration in an argon-oxygen atmosphere of growth. The variation of langatate conductivity with temperature under a constant electric field is examined over the range 20 to 500°C. Its dependence on current-carrying material is investigated for an Ir, Au/Ti, or Ag/Cr coating. |
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