HALF-RIGID MAGNETIC MATERIAL, MAGNETIC MARKER BIAS MATERIAL, AND ITS MANUFACTURE

摘要

PROBLEM TO BE SOLVED: To make the most of advantages in a Fe-Cu system alloy while superior as a half-rigid magnetic material by a method wherein a half-power band width of (211)α face of a matrix in which Fe is a main body by heat-treating after cold working is controlled to be a specified value or less. SOLUTION: A cold working material of a Fe-Cu system alloy is heat-treated and a half-power band width of (211)α face of a matrix in which Fe is a main body is controlled to be 0.5 deg. or less. A cold rolling gathering composition of Fe is called 100} <110>, and 211} <110> in a priority direction is also formed to the same degree in an alloy containing a Cu group non-magnetic metal. A half-rigid magnetic material is cut out in parallel to a rolling longitudinal part from this cold rolling material, and if a magnetic field is applied from outside in a <100> direction, a magnetic section and a magnetic wall move are made toward <100>. A distortion remaining in a material which is still cold rolled is eliminated, and it is necessary to heat-treat for facilitating the magnetic wall move. It is preferable that retaining temperatures for heat-treating are within a temperature scope of 400 to 700 deg.C.