Growth, Characterization and Physical Properties of High−Quality Large Single Crystals of Bi2(Sr2−xLax)CuO6+δ High Temperature Superconductors
نویسندگان
چکیده
High quality large Bi2(Sr2−xLax)CuO6+δ (La-Bi2201) single crystals have been successfully grown by the traveling solvent floating zone technique. The samples are characterized by compositional and structural analyzes and their physical properties are investigated by magnetic susceptibility and resistivity measurements. Superconducting samples with sharp superconducting transitions are obtained covering a wide range of doping from overdoped (x<0.40), optimally-doped (x∼0.40), underdoped (0.400.84). Crystals as large as ∼40 × 2.0 × 1 mm are obtained for x=0.73. Sharp superconducting transition with a width less than 2 K and nearly perfect Meissner signal of superconductivity are achieved for x=0.40. The availability of the La-Bi2201 single crystals will provide an ideal system to study the physical properties, electronic structure and mechanism of high temperature superconductivity. Growth of Bi2(Sr2−xLax)CuO6+δ Single Crystals 2
منابع مشابه
ابررساناهای دمای بالا- با دید نوترونها
Neutron scattering is proved to be a vital probe in unveiling the magnetic properties of high temperature superconductors (HTSC). Detailed information about the energy and momentum dependence of the magnetic dynamics of HTSC have been obtained directly by this technique. Over the past decade by improving the crystal growth methods, large and high quality single crystals of HTSC, which are ess...
متن کاملGrowth and Characterization of Bi2+xSr2−xCuO6+δ Single Crystals
High-quality Bi2+xSr2−xCuO6+δ(0<x≤0.5) single crystals have been grown successfully using the travelling-solvent floatingzone(TSFZ) technique. The samples with x ≥ 0.05 are in the underdoped level with an upturn of resistivity in low temperature region. The crystal structure of these samples was investigated by X-Ray diffraction. The evolution of c-axis lattice parameters with varied x is displ...
متن کاملCOEXISTENCE OF FERROMAGNETISM AND HIGH-TEMPERATURE SUPERCONDUCTIVITY IN Dy-DOPED BiPbSrCaCuO
The interplay of ferromagnetism and superconductivity is obviously a topic of great fundamental and practical interest. Specifically, weak ferromagnetism was recently reported to coexist with superconductivity in heavy-fermion specimens.1–3 Even more recently, the discovery that ferromagnetism exists together with superconductivity in high-temperature superconductors (HTSC) of the EuCeRuSrCuO f...
متن کاملخواص ترابردی و شبه گاف در ابررسانای NdBa2-xLax Cu3O7-δ
Polycrystalline samples of NdBa2-xLaxCu3O7-δ with x=0, 0.05, 0.10, 0.15, 0.20, and 0.30 were made by standard solid state methods. The transport and superconducting properties have been studied by the resistivity measurements as a function of temperature and doping concentration. In order to measurements the hole concentration in CuO2 planes, the room temperature thermoelectric power was measu...
متن کاملINVESTIGATION ON GROWTH AND CHARACTERIZATION OF NONLINEAR OPTICAL DICHLORO-DIGLYCINE ZINC II SINGLE CRYSTAL
The study of amino acid based nonlinear optical (NLO) materials with optimum physical properties is an important area due to their practical applications such as optical communication, optical computing, optical information processing, optical disk data storage, laser fusion reactions, laser remote sensing, colour display, medical diagnostics, etc. Also, microelectronic industries require cryst...
متن کامل