A laminated coil component includes a magnetic body part made of a NiZn-based ferrite material and a coil conductor containing Cu as a main component, which is wound into a coil shape, and the coil conductor is embedded in the magnetic body part to form a component base. The component base is divided into a first region near the coil conductor and a second region other than the first region. The grain size ratio of the average crystal grain size of the magnetic body part in the first region to the average crystal grain size of the magnetic body part in the second region is 0.85 or less. The molar content of CuO in the ferrite raw material is set to 6 mol % or less, and firing is performed in a reducing atmosphere in which the oxygen partial pressure is an equilibrium oxygen partial pressure of CuCu.sub.2O or less.

A laminated core includes a plurality of electrical steel sheets laminated on each other; and an insulating coating that is provided between the electrical steel sheets adjacent to each other in a laminating direction and bonds the electrical steel sheets to each other, wherein the insulating coating has a hardness of 200 to 300 MPa.

This disclosure provides a method of producing an alloy strip laminate including applying an external force directly to an alloy strip of a first laminate member having an adhesive layer and the alloy strip, to form a crack in the alloy strip and prepare a first laminate including the adhesive layer and the cracked alloy strip, applying an external force directly to an alloy strip of a second laminate member having an adhesive layer and the alloy strip, to form a crack in the alloy strip and prepare at least one second laminate including the adhesive layer and the cracked alloy strip, and laminating the at least one second laminate on the first laminate to prepare an alloy strip laminate in which the adhesive layer, and the alloy strip with the crack formed are alternately layered; and a production apparatus for an alloy strip laminate.

A non oriented electrical steel sheet includes, as a chemical composition, by mass %, 1.0% or more and 5.0% or less of Si, wherein a sheet thickness is 0.10 mm or more and 0.35 mm or less, an average grain size is 30 m or more and 200 m or less, an X value defined by X=(2B.sub.50L+B.sub.50C)/(3I.sub.S) is 0.800 or more, and an iron loss W.sub.10/1k is 80 W/kg or less.

A non oriented electrical steel sheet includes, as a chemical composition, by mass %, 1.0% or more and 5.0% or less of Si, wherein a sheet thickness is 0.10 mm or more and 0.35 mm or less, an average grain size is 30 m or more and 200 m or less, an X1 value defined by X1=(2B.sub.50L+B.sub.50C)/(3I.sub.S) is less than 0.845, an E1 value defined by E1=E.sub.L/E.sub.C is 0.930 or more, and an iron loss W.sub.10/1k is 80 W/kg or less.