<f>n</f> value and <f>Jc</f> distribution dependence of AC transport current losses in HTS conductors

Compared with LTS materials, HTS materials have some peculiarities affecting AC loss characteristics of the conductors. We measured the AC transport current losses in YBCO thin film coated conductors and a Bi2223/Ag sheathed tape. Comparing the measured data with analytical calculations, the dependence of the AC transport current losses on the <f>n</f> value and critical current density distributions are studied. It is shown that, considering the <f>n</f> values and <f>Jc</f> distributions, the peculiarities in the HTS materials can be taken into consideration and the transport current losses in HTS conductors can be calculated by the same analytical method used for LTS. [Copyright &y& Elsevier]