Composition, magnetic particle-containing cured substance, magnetic particle-introduced substrate, and electronic material

Abstract

A first object of the present invention is to provide a composition that is capable of forming a cured substance having a high magnetic permeability and a low magnetic loss and has excellent hole filling suitability and excellent storage stability. A second object of the present invention is to provide a magnetic particle-containing cured substance formed of the composition. A third object of the present invention is to provide a magnetic particle-introduced substrate and an electronic material that contain the magnetic particle-containing cured substance. The composition according to an embodiment of the present invention is a composition containing magnetic particles and an organic solvent, in which the magnetic particles include magnetic particles X having a sphericity of 100 to 120, the magnetic particles X include ferrite particles, a content of magnetic particles that are included in the magnetic particles X and have an equivalent circle diameter of less than 11 μm is 15% to 70% by mass with respect to a total mass of the magnetic particles X, and a volume average particle size of the magnetic particles X is 5 to 50 μm.

Dependencies are inferred from the claim text.