초록 ▼

A glassy metal alloy consists essentially of the formula FeaCobNicMdBeSifCg, where “M”is at least one member selected from the group consisting of molybdenum, chromium and manganese, “a-g”are in atom percent, “a”ranges from about 30 to about 45, “b”ranges from about 4 to about 40, “c”ranges from abo

A glassy metal alloy consists essentially of the formula FeaCobNicMdBeSifCg, where “M”is at least one member selected from the group consisting of molybdenum, chromium and manganese, “a-g”are in atom percent, “a”ranges from about 30 to about 45, “b”ranges from about 4 to about 40, “c”ranges from about 5 to about 45, “d”ranges from about 0 to about 3, “3”ranges from about 10 to about 25, “f”ranges from about 0 to about 15 and “g”ranges from about 0 to about 2. The alloy can be cast by rapid solidification into ribbon or otherwise formed into a marker that is especially suited for use in magneto-mechanically actuated article surveillance systems. Advantageously, the marker is characterized by relatively linear magnetization response in the frequency regime wherein harmonic marker systems operate magnetically. Voltage amplitudes detected for the marker are high, and interference between surveillance systems based on mechanical resonance and harmonic re-radiance is virtually eliminated.

대표청구항 ▼

A magnetic metallic glass alloy that is at least about 70% glassy, having a composition consisting essentially of the formula FeaCobNicMdBeSifCg, where M is at least one member selected from the group consisting of molybdenum, chromium and manganese, “a”, “b”, “c”, “d”, “e”, “f”and “g”are in atom pe

A magnetic metallic glass alloy that is at least about 70% glassy, having a composition consisting essentially of the formula FeaCobNicMdBeSifCg, where M is at least one member selected from the group consisting of molybdenum, chromium and manganese, “a”, “b”, “c”, “d”, “e”, “f”and “g”are in atom percent, “a”ranges from about 30 to about 45, “b”ranges from about 4 to about 40 and “c”ranges from about 5 to about 45, “d”ranges from about 0 to about 3, “e”ranges from about 10 to about 25, “f”ranges from about 0 to about 15 and “g”ranges from about 0 to about 2, said alloy having the form of a strip that exhibits mechanical resonance and has a linear magnetization behavior up to a minimum applied field of about 8 Oe.