Properties of Flux-Grown Cordierite Single Crystals

Effect of impurities on the optical properties of KTP single crystals grown from flux

In the present work, KTP crystals have been grown by spontaneous nucleation technique in flux medium using K6P4O13 flux. 0.4-1 °C/h cooling rates were applied in the spontaneous nucleation process. The presence and amount of impurities has been determined by using XRF. The optical transmission spectra of impure KTP crystals in the UV–visible region are discussed. The transmission cut-off is cle...

On the Chemistry and Physical Properties of Flux and Floating Zone Grown SmB6 Single Crystals

Recent theoretical and experimental findings suggest the long-known but not well understood low temperature resistance plateau of SmB6 may originate from protected surface states arising from a topologically non-trivial bulk band structure having strong Kondo hybridization. Yet others have ascribed this feature to impurities, vacancies, and surface reconstructions. Given the typical methods use...

Single crystals of superconducting SmFeAsO1−xFy grown at high pressure

Single crystals of SmFeAsO1−xFy of a size up to 120 × 100 μm2 have been grown from NaCl/KCl flux at a pressure of 30 kbar and temperature of 1350–1450 ◦C using the cubic anvil high-pressure technique. The superconducting transition temperature of the obtained single crystals varies between 45 and 53 K. Obtained crystals are characterized by a full diamagnetic response in low magnetic fields and...

Electronic properties of Cs2TCNQ3 crystals grown under magnetic field

Dynamics of flux creep in underdoped single crystals of Y12xPrxBa2Cu3O72d

Transport as well as magnetic relaxation properties of the mixed state were studied on strongly underdoped Y12xPrxBa2Cu3O72d crystals. We observed two correlated phenomena—a coupling transition and a transition to quantum creep. The distribution of transport current below the coupling transition is highly nonuniform, which facilitates quantum creep. We speculate that in the mixed state below th...