Magnetization AC loss measurements of singe- and seven-core Ba122/Ag tapes have been done by calibration-free method in the range of temperature from 20 K to 42 K and field magnitudes up to 70 mT in RMS with two frequencies 72 Hz and 144 Hz. A strong effect of eddy current losses in highly conductive Ag sheath was observed for single-core sample, but negligible for seven-core tape with more resistive AgSn alloy outer sheath. For the estimation of eddy current loss component, pure Ag foil was measured in the same range of temperatures and used for analytical subtraction from the total losses of Ba122/Ag. In addition, loss measurement of singe-core sample with chemically etched away Ag sheath was also done. AC loss measurements in perpendicular as well as parallel field orientation have shown a strong effect of the filament size.

已通过免校准方法在20 K至42 K的温度范围内以及在RMS时磁场强度高达70 mT（两个频率分别为72 Hz和144）下完成了单芯和七芯Ba122 / Ag磁带的磁化AC损耗测量赫兹。对于单芯样品，在高导电性Ag护套中观察到了涡流损耗的强烈影响，但对于电阻更大的AgSn合金外护套的七芯带则可以忽略不计。为了估算涡流损耗分量，在相同温度范围内测量了纯银箔，并将其用于从Ba122 / Ag的总损耗中减去分析值。另外，还进行了带有化学蚀刻掉的银皮的单芯样品的损耗测量。垂直和平行磁场方向的交流损耗测量显示出灯丝尺寸的强烈影响。