ON MAGNETIC-RELAXATION IN ANTIFERROMAGNETIC HORSE-SPLEEN FERRITIN PROTEINS

被引：41
作者：
TEJADA, J
ZHANG, XX
机构：
[1] Fac. de Fisica, Barcelona Univ.
来源：
JOURNAL OF PHYSICS-CONDENSED MATTER | 1994年 / 6卷 / 01期
关键词：
D O I：
10.1088/0953-8984/6/1/025
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We report low-temperature magnetic relaxation measurements of nanometre-scale antiferromagnetic horse-spleen ferritin particles. It is argued that the magnetic relaxation signal is due to the excess uncompensated spins. Our key observation is the non-thermal character of the relaxation below 2 K. The observed features are in agreement with theoretical suggestions on quantum tunnelling of the Neel vector between easy directions.
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页码：263 / 266
页数：4
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