Long-range ferromagnetic dipolar ordering of high-spin molecular clusters
arXiv:cond-mat/0212372 · doi:10.1103/PhysRevLett.90.017206
Abstract
We report the first example of a transition to long-range magnetic order in a purely dipolarly interacting molecular magnet. For the magnetic cluster compound Mn6O4Br4(Et2dbm)6, the anisotropy experienced by the total spin S=12 of each cluster is so small that spin-lattice relaxation remains fast down to the lowest temperatures, thus enabling dipolar order to occur within experimental times at Tc = 0.16 K. In high magnetic fields, the relaxation rate becomes drastically reduced and the interplay between nuclear- and electron-spin lattice relaxation is revealed.
4 pages, 4 .eps figures; accepted for publication in Phys. Rev. Lett
Cited by in corpus (5)
- Magnetic long-range order induced by quantum relaxation in single-molecule magnets
- Magnetization Process of Single Molecule Magnets at Low Temperatures
- Magnetic dipolar ordering and relaxation in the high-spin molecular cluster compound Mn6
- An automated and versatile ultra-low temperature SQUID magnetometer
- Effect of dipolar interactions on the magnetization of a cubic array of nanomagnets