Theoretical study on the giant magnetoimpedance in coaxial-cable wire and sandwi ched film | Zendy

Jiangtao Liu | Zendy; Zhou Yun-Song | Zendy; Wang Ai-ling | Zendy; Jiang Hong-wei | Zendy; Zheng Wu | Zendy

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Theoretical study on the giant magnetoimpedance in coaxial-cable wire and sandwi ched film

Author(s) -

Jiangtao Liu,

Zhou Yun-Song,

Wang Ai-ling,

Jiang Hong-wei,

Zheng Wu

Publication year - 2003

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.52.2859

Subject(s) - giant magnetoimpedance , coaxial , phenomenological model , materials science , copper , layer (electronics) , condensed matter physics , electroplating , giant magnetoresistance , composite material , physics , mechanics , magnetic field , electrical engineering , magnetoresistance , metallurgy , engineering , quantum mechanics

Two phenomenological models based on the experimental samples of giant magnetoimpedance (GMI) effect are proposed. The first model is a coaxial_cable wire composed of copper cylindrical wire electroplated with a soft magnetic layer, and the second is a sandwiched film structured by two soft magnetic layers, within whic h Cu or Ag serves as the central layer. Their characteristics are discussed theo retically using Maxwell equations and Landau_Lifshitz equation. It is proved tha t for the two models the origination of enhancement of GMI effect is the same, a nd the difference between them arises from the parameter of their geometry. The structure of double deck is better than a single layer for the identical magneti c materials in GMI effect. The application of the theoretical models to real mat erials is examined. Predictions by using the models are qualitatively in agreeme nt with experimental data.

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