### Abstract

This paper describes the theoretical evaluation of AC losses in the oxide superconductors with smooth transport properties. First, conventional expressions of AC losses are reviewed for the n-value model, in which the local electric field is proportional to the power of local current density. The superconductor under consideration is a slab with infinitely wide faces, to which an external AC magnetic field is applied along the surfaces. It is also assumed that the critical current density and n-value are independent of the magnitude of local magnetic field. As a result of theoretical consideration by combining Maxwell's equations and the n-value model for the voltage-current characteristics, it is pointed out that the loss factor can be determined by only two parameters. Next, a new type of expressions is proposed for the AC loss evaluation, and it is concluded that a discrepancy is less than 17% between analytical and numerical results.

Original language | English |
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Pages (from-to) | 1097-1101 |

Number of pages | 5 |

Journal | Physica C: Superconductivity and its Applications |

Volume | 378-381 |

Issue number | PART 2 |

DOIs | |

Publication status | Published - Oct 1 2002 |

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### All Science Journal Classification (ASJC) codes

- Condensed Matter Physics

### Cite this

*Physica C: Superconductivity and its Applications*,

*378-381*(PART 2), 1097-1101. https://doi.org/10.1016/S0921-4534(02)01593-9