• Journal of the Korean Magnetics Society
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• v.3 no.4
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• pp.269-276
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• 1993

Co/Pd multilayered thin films with various ratios of Co sublayers to Pd sublayers(nCo/nPd = 1/4, 2/4, 3/4, 5/4) were fabricated at different substrate temperatures($R.\;T.,\;100,\;150,\;200\;^{\circ}C$) with the conventional vacuum evaporation method, and their Hall voltage hysteresis curves were measured. These Hall curves were decomposed on the basis of the superpose of the transverse Hall effect term from the magnetizations of Co and Pd sublayers and the magnetoresistivity term, by the optimal fitting method. In the results, both of the ferromagnetic and anti ferromagnetic states coexisted through whole samples, and the uniaxial or unidirectional easy axis type Hall hysteresis curves occured were dependent upon the effects of the exchange anisotropy between both magnetic states and the domain wall pinning by the antiferromagnet inclusions.

• Progress in Superconductivity and Cryogenics
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• v.21 no.4
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• pp.48-52
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• 2019

Recently, many studies have been reported on the magnetoresistance and Hall effect of REBCO thin films and bulk. The voltage interferes quench detection of high-temperature superconducting magnet and generates leakage current in no insulation high-temperature superconducting coil. Therefore, in this paper, experiments on magnetoresistance and Hall effect of commercial YBCO and GdBCO tapes have been carried out. As a result, anomalous voltages expected for the magnetoresistance and Hall effect of REBCO tapes were observed and analyzed. In addition, the voltage characteristics of REBCO have been identified, and the Hall coefficient are calculated for use in high magnetic field magnet applications.

• Journal of the Korean Magnetics Society
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• v.4 no.1
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• pp.44-47
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• 1994

High $T_{c}$ superconducting $Y_{1}Ba_{2}Cu_{3}O_{7-\delta}$ thin film was grown up for c-axis orientation by epitaxial growth method on $LaAlO_{3}$ single crystal substrate. The crystal structures of this thin film were found to be c-axis orientation by X-ray diffraction patterns. Hall effect and resistivity measurements were made by van der Pauw method. Hall resistivity was calculated from the magnetoresistivity by considering thermomagnetic effect. The relation was $pH=p_{s}tan{\alpha}_{n}-QBT\frac{S_s}{K_s}$ The measured Hall resistivity and the calculated one are in good agreement each other.