Patent ID: 7799147

Claim:
A flaky soft magnetic metal powder, which is used in a magnetic core member for an RFID antenna comprising the flaky soft magnetic metal powder and a binder, wherein the flaky soft magnetic metal powder is composed of an Fe—Si—Cr alloy having an Ms (saturation magnetization)/Hc (coercive force) of 0.8 to 1.5 (mT/Am −1 ) in an applied magnetic field of 398 kA/m, the flaky soft magnetic metal powder comprises 12 to 17 at % of Si, 0.5 to 5 at % of Cr, and the balance being Fe and inevitable impurities, the flaky soft magnetic metal powder has a weight-average article size D 50 of 5 to 30 μm, and an average thickness of 0.1 to 1 μm.