MAGNETIC STORAGE MEDIUM

To provide a magnetic storage medium capable of improving electromagnetic conversion characteristics.SOLUTION: A tape-shaped magnetic recording medium includes a substrate, and a magnetic layer that is provided on the substrate and contains magnetic powder. The magnetic powder contains hexagonal fer...

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Bibliographische Detailangaben
Hauptverfasser: MAEJIMA KATSUNORI, TERAKAWA MASARU, YAMAGA MINORU
Format: Patent
Sprache:eng ; jpn
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Beschreibung
Zusammenfassung:To provide a magnetic storage medium capable of improving electromagnetic conversion characteristics.SOLUTION: A tape-shaped magnetic recording medium includes a substrate, and a magnetic layer that is provided on the substrate and contains magnetic powder. The magnetic powder contains hexagonal ferrite, ε-iron oxide, or Co-containing spinel ferrite, the magnetic layer includes a servo band, an average thickness of the magnetic layer is 90 nm or less, an average aspect ratio of the magnetic powder is 1.0 or more and 3.0 or less, a coercive force Hc1 of the magnetic recording medium in a vertical direction of the magnetic recording medium is 3,000 Oe or less, the coercive force Hc1 and a coercive force Hc2 of the magnetic recording medium in a longitudinal direction of the magnetic recording medium satisfy a relation of Hc2/Hc1≤0.8, and a Young's modulus in the longitudinal direction of the magnetic recording medium is 8.3 GPa or less.SELECTED DRAWING: Figure 1 【課題】電磁変換特性を向上することができる磁気記録媒体を提供する。【解決手段】テープ状の磁気記録媒体は、基体と、基体上に設けられ、磁性粉を含む磁性層とを備える。磁性粉は、六方晶フェライト、ε酸化鉄またはCo含有スピネルフェライトを含み、磁性層はサーボバンドを有し、磁性層の平均厚みが、90nm以下であり、磁性粉の平均アスペクト比が、1.0以上3.0以下であり、磁気記録媒体の垂直方向における磁気記録媒体の保磁力Hc1が、3000Oe以下であり、保磁力Hc1と、磁気記録媒体の長手方向における磁気記録媒体の保磁力Hc2とが、Hc2/Hc1≦0.8の関係を満たし、磁気記録媒体の長手方向のヤング率は、8.3GPa以下である。【選択図】図1