Magnetic core and magnetic component

A magnetic core comprising:

• a core assembly including a plurality of thin strip blocks assembled together, each of the thin strip blocks being a laminated body formed of a plurality of nanocrystalline thin strips laminated along a lamination direction,
• wherein the plurality of nanocrystalline thin strips are made of a nanocrystal-containing material having a bcc-Fe phase as a main phase,
• wherein each of the plurality of thin strip blocks includes:
• fixing portions in which the plurality of nanocrystalline thin strips are joined to each other in the lamination direction, such that the fixing portions electrically connect the plurality of the nanocrystalline thin strips within the thin strip blocks, while the plurality of the thin strip blocks are electrically separated from each other,
• and wherein the nanocrystalline thin strip positioned at a center portion of the thin strip block in the lamination direction has an iron loss smaller than an iron loss of the nanocrystalline thin strip positioned at a surface of the thin strip block.