On the Relationship between Magnetic Viscosity and Coercivity of Perpendicular Media
On the Relationship between Magnetic Viscosity and Coercivity of Perpendicular Media
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垂直介质的磁粘度与矫顽力的关系
DOI：
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发表时间：
1994
期刊：
影响因子：
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通讯作者：
J. Lodder
中科院分区：
文献类型：
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作者：
J. T. Lintelo;J. Lodder
在两种垂直薄膜介质Co-Cr和Fe-Alumite上进行了相关和直流退磁测量。由此导出了磁粘滞系数和不可逆磁化率参数。它们的比值，导致的波动场，示出了相关的coerivity。这种所谓的“垂直介质的巴比尔图”被发现表现出近似一个半的斜率，而不是一个，因为是在平面内的介质。还推导了活化体积，并将活化体积与活化度进行了数学关联。在这里，发现近似负1.5的斜率，而不是如对于平面内介质所发现的负0.73。
The dependent and dc-demagnetization measurements were performed on two types of perpendicular thin film media, Co-Cr and Fe-alumite. From these the parameters for magnetic viscosity and irreversible susceptibility were derived. Their ratio, resulting in the fluctuation field, is shown to relate logarithmically to the coereivity. This so-called “Barbier plot for perpendicular media” is found to exhibit a slope of approximately one and a half instead of one, as is found for in-plane media. The activation volumes were also derived and related logarithmically to the coercivity. Here a slope of approximately minus one and a half was found, instead of minus 0.73 as is found for in-plane media.