SUSCEPTIBILITY PHENOMENA IN A FINE PARTICLE SYSTEM .2. FIELD-DEPENDENCE OF THE PEAK
SUSCEPTIBILITY PHENOMENA IN A FINE PARTICLE SYSTEM .2. FIELD-DEPENDENCE OF THE PEAK
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DOI：
10.1016/0304-8853(92)90273-q
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发表时间：
1992-08-01
影响因子：
2.7
通讯作者：
CHANTRELL, RW
中科院分区：
文献类型：
--
作者：
ELHILO, M;OGRADY, K;CHANTRELL, RW
对于由 Fe3O4 颗粒组成的弱相互作用细颗粒系统，研究了直流磁化率峰值的场依赖性。峰值测量表明，当样品在大直流场中升温时，T(g) 会移至较低温度。此外，本文还使用 Neel 超顺磁（阻塞）模型计算了平均阻塞温度 [T(BH)] 的场依赖性，该模型经过修改以考虑粒子相互作用的影响。
The field dependence of the peak in the dc susceptibility has been studied for a weakly interacting fine particle system consisting of Fe3O4 particles. Measurements of the peak show that T(g) moves to lower temperatures as the sample is warmed up in a large dc field. Also in this paper the field dependence of the mean blocking temperature [T(BH)] is calculated using the Neel superparamagnetic (blocking) model modified to take into account the effects of particle interactions.