Methodfor manufacturing nanocrystal alloy ribbon, and method for manufacturing magnetic sheet

A method for manufacturing a magnetic sheet comprising:

• preparing a nanocrystalline alloy ribbon, a support formed in a ribbon shape, and an adhesive layer having an adhesive provided on at least one of a first surface and a second surface of the support;
• and
• continuously guiding the nanocrystalline alloy ribbon and the adhesive layer to an attaching roller to bond the nanocrystalline alloy ribbon and the adhesive layer by the attaching roller,
• the nanocrystalline alloy ribbon being obtained by heating a non-crystalline alloy ribbon by bringing the ribbon into contact with a heating body, the nanocrystalline alloy ribbon having a structure in which crystal grains having an average crystal grain size of 50 nm or less are present in an amorphous phase, wherein
• the nanocrystalline alloy ribbon is represented by a composition formula:
• (Fe1−xAx)aSibBcCudMe, where A is at least one type of Ni and Co, M is at least one type of element selected from a group consisting of Nb, Mo, V, Zr, Hf and W, and in at %, 72.0≤a≤81.0, 9.0≤b≤17.0, 5.0c≤10.0, 0.02≤d≤1.2, 0.1≤e≤3.5, and 0≤x≤0.1 are satisfied,
• when the non-crystalline alloy ribbon is heated by contacting the heating body, the non-crystalline alloy ribbon is conveyed and a ribbon holding member comes into contact with a surface of the non-crystalline alloy ribbon opposite to a surface that contacts of the heating body, so that the non-crystalline alloy ribbon is heated while being pressed against the heating body, and
• the heating body is heated to a heating temperature Ta of Tx1+80° C. or more and Tx1+230° C. or less, where Tx1° C. is a bccFe crystallization starting temperature of the non-crystalline alloy ribbon measured at a heating rate of 20 K/min.