Influence of Charge Doping on Thermal Diffusivity of Double Perovskite Sr2FeMoO6 Studied by Mirage Effect |
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| Authors: | C. X. Zhao A. H. Luo X. J. Liu S. Y. Zhang L. P. Cheng |
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| Affiliation: | (1) Institute of Acoustics and Lab of Modern Acoustics, Nanjing University, Nanjing, 210093, P. R. China |
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| Abstract: | Effects of charge doping on thermal diffusivity have been investigated in double perovskite ferromagnetic Sr2–xLaxFeMoO6 (0  x 0.4) by means of the mirage effect at 300 K ( the critical temperature Tc  420 K). Substitution of the La3+ ions for the Sr2+ ions significantly increases the value of the thermal diffusivity from 0.39 cm2 · s–1 at x = 0 to 0.54 cm2 · s–1 at x = 0.4. The increased thermal diffusivity is ascribed to the extra itinerant electrons on the Mo4d band. |
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| Keywords: | charge doping double perovskite mirage effect thermal diffusivity |
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