The Investigation of Sweeping Speed on the Magnetization of a 2 Inches Diameter $\hbox{YBa}_{2}\hbox{Cu}_{3}\hbox{O}_{7 - \delta}$ Thin Film With the Circular-Type Magnetic Flux Pump

Study of the Penetration of a 2 Inches Diameter YBCO Thin Film With the Travelling Magnetic Wave

“…This experiment involves a circular-type magnetic flux pump (CTMFP) [5], [6] and a 2 inch diameter YBCO thin film. A six hall sensor array is placed inside the CTMFP device to measure the cross section magnetic field.…”

Direct measurement of the vortex migration caused by traveling magnetic wave

“…The experimental setup and some early experimental results of the CTMFP system had been reported in our previous publications. 4,8,9 The CTMFP is the conceptual combination of the thermally actuated flux pump 10 and the linear type magnetic flux pump (LTMFP). 11 Fig.…”

Vortex migration caused by travelling magnetic wave in a 2 in. diameter YBa2Cu3O7−δ thin film

“…III B when we applied a single phase parallel ac field to the sample, while the magnetization can be precisely predicted by the Bean's model. Moreover, the flux shaking effect is frequency-dependent; however, as shown in our previous study, 16 the increase of the flux density in the centre of the sample is independent of the frequency.…”

“…The more detailed circuit analysis can be found in our early publication. 16 We expect the CTMFP to produce an annular-shape travelling magnetic wave in the centre of the device similar to Fig. 3.…”

“…The conceptual design of the CTMFP can be found elsewhere. 15,16 The CTMFP is made of three phase windings with electric lamination in between and a dc coil around. The three phase windings are connected to a three-phase inverter; the dc coil is connected to a dc power supply.…”