MAGNETIC-PROPERTIES OF FINEMET-TYPE THIN-LAYERS

Finemet-type amorphous layers were prepared with a Cu content of 1-25 at% by co-sputtering from normal finemet and pure Cu onto a liquid-nit rogen-cooled sample holder. Thin layers with higher Cu content had ver y soft magnetic properties (H-c similar to 10 A/m) already in the amor phous phase. On heat creating the 1 at% Cu layer the optimal H-c was 1 1 A/m after 425 degrees C/1 h.