| 摘要 |
PROBLEM TO BE SOLVED: To provide a magnetic card which prohibits the erasing and writing of the information intended for forgery and has better security. SOLUTION: The magnetic material included in the magnetic layer 2 of the magnetic arranged 10 having the magnetic layer 2 in at least a part on a substrate 1 has the compsn. expressed by the general formula Rx T100-x-y My . In the formula, R denotes 1 kinds selected from rare earth elements indispensably consisting of Sm and contg. Y, T is 1 kind selected from transition metals (Fe, Co, Ni) essentially consisting of Co; M is at least 1 kinds among Si, Ti, Al, Ga, V, Cr, Mn, Cu, Zr, Nb, Mo, Pd, Hf, Ta, W, Pt and Au. The compsn. value (x) of R is in a range of 16.0 to 22.0 and the compsn. value (y) of M is in a compsn. range of 0<=y<=30 (both in at.%). |
