Magnetic viscosity in ferromagnets: II. Co5Ce permanent magnet particles
Magnetic viscosity in ferromagnets: II. Co5Ce permanent magnet particles
复制标题
铁磁体中的磁粘度：II。
DOI：
10.1080/14786437608222050
复制
发表时间：
1976
影响因子：
1.6
通讯作者：
G. Roy
中科院分区：
文献类型：
--
作者：
P. Gaunt;G. Roy
在95 ~ 290 K温度范围内，对直径为1 ~ 5 ~ 8 μm的Co_5Ce颗粒进行了磁粘滞系数的测量。温度变化的性质不能解释的热激活效应单独。壁障模型已用于分析数据并分离固有温度和热激活效应。势垒相互作用强度的温度变化被证明是相同的所有颗粒尺寸和矫顽力的上升，作为样品被冷却的主要因素。
Magnetic viscosity measurements have been made on Co5Ce particles with diameters from 1–5 to 8 μm and over a temperature range from 95 to 290 K. The temperature variation of the properties could not be explained in terms of thermal activation effects alone. A wall barrier model has been used to analyse the data and to separate intrinsic temperature and thermal activation effects. The temperature variation of barrier interaction strength is shown to be the same for all particle sizes and to be the major factor in the rise in coercive force as the samples are cooled.