Abstract
Single crystal YBa2Cu3O6.4 ¯E∥c irradiation by CO2-Ar laser caused (1) a shift of the “500” Raman band (480–490 cm−1), which means the appearance of the superconducting phase in the focus spot (proved by preliminary results of the inductive method); (2) the increase in intensity of many weakly lived Raman bands that usually look like “pedestals” of the “500” band (they were observed before as strictly reversible Ar+ laser photoinduced bands). The additional (∼10 components) structure was developed in the region 400–600 cm−1 on the Raman spectra by comparison of spectra for samples before and after irradiation. By reconstruction of such spectra we analyzed the composition of the sample, which was assumed to be a mixture of microregions with different oxygen content.
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Kudriavtsev, E.M., Melnik, N.N., Rybalko, Y.I. et al. Long-lived induced Raman bands, appearance and ≳ 4 cm−1 shift of “500” band as a result of pulsed IR(520–640 cm−1) laser irradiation on YBaCuO single crystals. J Supercond 8, 201–206 (1995). https://doi.org/10.1007/BF00732371
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DOI: https://doi.org/10.1007/BF00732371