We have measured directly the low field magnetization and its time decay of weak link superconductor in the sintered T1_(2)Ba_(2)Ca_(2)Cu_(3)O_(10+x).The decay of magnetization with time at the field intensities of 5,...We have measured directly the low field magnetization and its time decay of weak link superconductor in the sintered T1_(2)Ba_(2)Ca_(2)Cu_(3)O_(10+x).The decay of magnetization with time at the field intensities of 5,10,15,20 and 50 Oe was observed to follow the law of logarithm,M∝Int.The pinning potential derived from the slope of the magnetization decay is about 0.045~0.075eV.展开更多
An Y-Ba-Cu-O superconducting film with onset temperature Tc(onset)=91K and zero resistance temperature Tc(end)=81.4K has been obtained for the first time by wing electron cyclotron resonance(ECR)plasma ions deposition...An Y-Ba-Cu-O superconducting film with onset temperature Tc(onset)=91K and zero resistance temperature Tc(end)=81.4K has been obtained for the first time by wing electron cyclotron resonance(ECR)plasma ions deposition technique.The relationship between the composition of the film and the atmosphere as well as the distance between the target and substrate has also been given.展开更多
An anomalous Hall effect was found experimentally in the metaltype amorphous InSb in which the carrier concentration was about 10^(18)-10^(19)cm^(-3).The result showed that electron-electron interaction was found expe...An anomalous Hall effect was found experimentally in the metaltype amorphous InSb in which the carrier concentration was about 10^(18)-10^(19)cm^(-3).The result showed that electron-electron interaction was found experimentally in amorphous metal for the first time.It also means that the conduction electrons are magnetic-frozen out.It is surprising that the magnetic field at which the conduction electrons are frozen out is only about 1kG.展开更多
There was strongj7uz creep accompanied by flux jump in high T_(c) Bi^(1.7)Pb_(0.3)Sr_(2)Ca_(2)Cu_(3)O_(y) bulk superconductor.The thermal activation energy Uo is estimated to be 0.02eV.
文摘We have measured directly the low field magnetization and its time decay of weak link superconductor in the sintered T1_(2)Ba_(2)Ca_(2)Cu_(3)O_(10+x).The decay of magnetization with time at the field intensities of 5,10,15,20 and 50 Oe was observed to follow the law of logarithm,M∝Int.The pinning potential derived from the slope of the magnetization decay is about 0.045~0.075eV.
基金This work was reported at the National HTS thin films conference,Hefei,April 1989.
文摘An Y-Ba-Cu-O superconducting film with onset temperature Tc(onset)=91K and zero resistance temperature Tc(end)=81.4K has been obtained for the first time by wing electron cyclotron resonance(ECR)plasma ions deposition technique.The relationship between the composition of the film and the atmosphere as well as the distance between the target and substrate has also been given.
基金Project supported by the Science Fund of the Chinese Academey of Sciences.
文摘An anomalous Hall effect was found experimentally in the metaltype amorphous InSb in which the carrier concentration was about 10^(18)-10^(19)cm^(-3).The result showed that electron-electron interaction was found experimentally in amorphous metal for the first time.It also means that the conduction electrons are magnetic-frozen out.It is surprising that the magnetic field at which the conduction electrons are frozen out is only about 1kG.
文摘There was strongj7uz creep accompanied by flux jump in high T_(c) Bi^(1.7)Pb_(0.3)Sr_(2)Ca_(2)Cu_(3)O_(y) bulk superconductor.The thermal activation energy Uo is estimated to be 0.02eV.
