Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1506429 | Solid State Sciences | 2009 | 8 Pages |
Abstract
We report on a family of molecular crystals containing non-interacting Ni10 magnetic molecules. These crystals display slow relaxation of the magnetization below a temperature as high as 17 K. This behavior is not associated with an anisotropy energy barrier. The magnetic energy spectrum of a Ni10 molecule is structured in dense well-separated bands, the lowest of which makes the crystal nearly opaque to phonons of energy below about 1 meV. We interpret the observed non-equilibrium behavior as due to resonant trapping of these low-energy phonons.
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Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
S. Carretta, P. Santini, G. Amoretti, M. Affronte, A. Candini, A. Ghirri, I.S. Tidmarsh, R.H. Laye, R. Shaw, E.J.L. McInnes,