Correlation between peak and median blocking temperatures by magnetization measurement on isolated ferromagnetic and antiferromagnetic particle systems

Jianzhong Jiang, Steen Mørup

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The influence of the particle size distribution on the ratio of the peak temperature, T-peak, to the blocking temperature, T-Bm, in zero field cooled (ZFD) magnetization curves has studied for both ferromagnetic and antiferromagnetic particle systems. In both systems the ratio beta=T-peak/T-Bm does not depend on the median particle volume. However, T-Bm can be considerably different from T-peak in both systems. These results show that the ZFD measurements can be used to determine T-Bm values only if the particle size distribution of the system is known. Otherwise, the estimated T-Bm values will have a large uncertainty, especially in systems with a broad particle size distribution.
Original languageEnglish
JournalNanostructured Materials
Pages (from-to)375-378
Publication statusPublished - 1997

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