| 摘要 |
PROBLEM TO BE SOLVED: To produce a magnetic material core and an inductor, capable of readily providing magnetic material cores having different temperature characteristics of an inductance value (μH). SOLUTION: A magnetic material core and an inductor obtained by sintering a ferrite raw material is immersed in an acid or an alkali solution for a time to make the temperature characteristics of an inductance value (μH) become a desired state. A Mn-Zn based ferrite raw material, a Ni-Zn based ferrite raw material or a Cu-Zn-based ferrite raw material can be used as the ferrite raw material. For example, one or more selected from hydrochloric acid, sulfuric acid, nitric acid and hydrofluoric acid may be used as the acid. For example, sodium hydroxide or potassium hydroxide can be used as the alkali. |
