Nonexponential magnetization relaxation in a manganese single-molecule magnet

A Yamaguchi, H Mitamura, N Mori, T Goto, H Ishimoto, M Nakano, J Yoo, D N Hendrickson, E K Brechin, G Christou

Research output: Contribution to journalArticlepeer-review


The magnetization relaxation in a tetranuclear manganese cluster Mn-4(pdmH) has been investigated with an extraction and a Faraday magnetometer at 0.14-0.75 K. The relaxation curves in the tunneling regime show the "square-root time" dependence for a short time after reversing the magnetization. This fact suggests the hyperfine and inter-cluster dipolar interactions play important roles for the relaxation. (C) 2003 Elsevier Science B.V. All rights reserved.

Original languageEnglish
Pages (from-to)1174-1175
Number of pages2
JournalPhysica B: Condensed Matter
Publication statusPublished - May 2003


  • single molecule magnet
  • cluster
  • quantum tunneling
  • magnetization relaxation


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