@article{oai:nagasaki-u.repo.nii.ac.jp:00016065, author = {Yanai, Takeshi and Shimada, A. and Takagi, K. and Takahashi, K. and Nakano, Masaki and Fukunaga, Hirotoshi and Yoshizawa, Y.}, issue = {9}, journal = {Journal of Applied Physics}, month = {May}, note = {Fe-based toroidal cores with a permeability value of several hundreds were prepared by the continuous Joule heating method under tensile stress at a high moving velocity of 120 cm/min, corresponding to an effective annealing time of approximately 1.8 s, and their magnetic properties were evaluated. The prepared core showed a constant permeability value up to 2 MHz and a low magnetic loss compared with those for conventional cores with controlled permeability. An investigation of dc-bias properties of the core suggested that the core has constant and good magnetic properties below the dc-bias field of 1 kA/m which is approximately 50% of the anisotropy field. Consequently, the continuous Joule heating under a tensile stress method at high moving velocity enables us to prepare a long annealed ribbon in a short time with simple equipment and improves productivity for the fabrication process of high performance Fe-based toroidal cores with controlled permeability. c2007 American Institute of Physics, Journal of Applied Physics, 101(9), 09N110; 2007}, pages = {09N110-1--09N110-3}, title = {Magnetic properties of Fe-based toroidal cores prepared by continuous Joule heating under tensile stress.}, volume = {101}, year = {2007} }