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10 August 2001 Lower critical fields in BKBO single crystals
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We performed dc-magnetization measurements in low magnetic fields on single crystals of Ba1-xKxBiOy with the different potassium content. The single crystal reveal the superconducting transition at 29-31K. It is shown that the lower critical fields HCl in crystals amount to 104 Oe, 126 and 112 Oe. The values of the penetration depth (lambda) are equal to 2530 A, 2430 A and 2670 A for x equals 0.34, 0.37 and 0.4 respectively.
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Sergei N. Barilo, Valentina I. Gatalskaya, Sergei V. Shiryaev, and Anatolii S. Shestac "Lower critical fields in BKBO single crystals", Proc. SPIE 4412, International Conference on Solid State Crystals 2000: Growth, Characterization, and Applications of Single Crystals, (10 August 2001);

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