Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2004-03-17
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
Scientific paper
10.1103/PhysRevB.70.054426
We present high-frequency high-field electron paramagnetic resonance (EPR) measurements on the dodecanuclear manganese complex Mn12-bromoacetate (Mn12-BrAc). The crystal-field parameters are found to be identical to those of the original compound Mn12-acetate (Mn12-Ac). A detailed analysis of the frequency and temperature dependence of anomalous peaks observed in the EPR spectra of Mn12-BrAc enables us to locate the S=9 manifold at about 40 K above the Ms= +/-10 ground state of this nominally S=10 system. This is very close to the Ms = +/-6 state of the S = 10 manifold, thus suggesting pathways for the thermally assisted magnetization dynamics and related properties. Finally, the EPR fine structures recently attributed to disorder associated with the acetic acid of crystallization in Mn12-Ac are absent in the present measurements, thus suggesting that the Mn12-BrAc complex represents a more suitable candidate for measurements of quantum effects in high symmetry S=10 SMMs.
Abboud K.
Chakov N. E.
Christou George
Hill Stephen
Petukhov K.
No associations
LandOfFree
Evidence for the S=9 excited state in Mn12-bromoacetate measured by electron paramagnetic resonance does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Evidence for the S=9 excited state in Mn12-bromoacetate measured by electron paramagnetic resonance, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Evidence for the S=9 excited state in Mn12-bromoacetate measured by electron paramagnetic resonance will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-151849