We fabricated a c−axis aligned Sr_(0.6)K_(0.4)Fe_(2)As_(2)superconductor using a two−step magnetic field procedure.The effect of the magnetic fields on the structure and superconducting properties of Sr_(0.6)K_(0.4)Fe...We fabricated a c−axis aligned Sr_(0.6)K_(0.4)Fe_(2)As_(2)superconductor using a two−step magnetic field procedure.The effect of the magnetic fields on the structure and superconducting properties of Sr_(0.6)K_(0.4)Fe_(2)As_(2) is investigated using x−ray diffraction and magnetic measurements.The degree of orientation of the samples is about 0.39 for the c axis and 0.51 for ab-plane orientation,as evaluated from the Lotgering factor of x-ray diffraction.This technology may be useful in a variety of potential applications,including preparing iron-based superconducting bulks and wires with high critical currents.展开更多
Cu films were electrodeposited under a magnetic field of 5 T on the Pt disc electrodes with diameters of 3 mm ~ 25 μm.Such magnetoelectrodeposited(MED) Cu films were employed as an electrode,and cyclic voltammograms ...Cu films were electrodeposited under a magnetic field of 5 T on the Pt disc electrodes with diameters of 3 mm ~ 25 μm.Such magnetoelectrodeposited(MED) Cu films were employed as an electrode,and cyclic voltammograms were measured for the electrochemical reactions of an amino acid of alanine.Chiral behavior was observed as oxidation current difference between the enantiomers.Clear magnetoelectrochemical chirality was observed on the micro-disk electrode and on the kinetic-controlled electrode process of alanine.The chiral response was durable for more than 10 cycles of the consecutive voltammetric measurements of the enantiomers.展开更多
基金by the National Basic Research Program of China under Grant No 2011CBA00105the National Natural Science Foundation of China under Grant Nos 51002150 and 51025726。
文摘We fabricated a c−axis aligned Sr_(0.6)K_(0.4)Fe_(2)As_(2)superconductor using a two−step magnetic field procedure.The effect of the magnetic fields on the structure and superconducting properties of Sr_(0.6)K_(0.4)Fe_(2)As_(2) is investigated using x−ray diffraction and magnetic measurements.The degree of orientation of the samples is about 0.39 for the c axis and 0.51 for ab-plane orientation,as evaluated from the Lotgering factor of x-ray diffraction.This technology may be useful in a variety of potential applications,including preparing iron-based superconducting bulks and wires with high critical currents.
文摘Cu films were electrodeposited under a magnetic field of 5 T on the Pt disc electrodes with diameters of 3 mm ~ 25 μm.Such magnetoelectrodeposited(MED) Cu films were employed as an electrode,and cyclic voltammograms were measured for the electrochemical reactions of an amino acid of alanine.Chiral behavior was observed as oxidation current difference between the enantiomers.Clear magnetoelectrochemical chirality was observed on the micro-disk electrode and on the kinetic-controlled electrode process of alanine.The chiral response was durable for more than 10 cycles of the consecutive voltammetric measurements of the enantiomers.
