Open AccessTheoretical study on the giant magnetoimpedance in coaxial-cable wire and sandwi ched film
Author(s) -
Jiang-Tao Liu,
Zhou Yun-Song,
Ailing Wang,
Jiang Hong-Wei,
Zheng Wang
Publication year - 2003
Publication title -
wuli xuebao
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.