| 摘要 |
An electromagnetic wave absorber is formed of an Mn-Zn ferrite including: a spinel primary phase which contains 40.0 to 49.9 mol % Fe<SUB>2</SUB>O<SUB>3</SUB>, 4.0 to 26.5 mol % ZnO, 0.1 to 4.0 mol % TiO<SUB>2 </SUB>and/or SnO<SUB>2</SUB>, and the remainder consisting of MnO; and a secondary phase which contains CaO as a base component. In the ferrite, the mass of the spinel primary phase accounts for 50.0 to 99.0% of the aggregate mass of the spinel primary phase and the secondary phase.
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