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- Title
Magnetic Response of Mn(III)F(salen) at Low Temperatures.
- Authors
PARK, J.-H.; RISSET, O.N.; SHIDDIQ, M.; PEPRAH, M. K.; KNOWLES, E. S.; ANDRUS, M. J.; BEEDLE, C. C.; EHLERS, G.; PODLESNYAK, A.; ČIŽMÁR, E.; NAGLER, S. E.; HILL, S.; TALHAM, D. R.; MEISEL, M. W.
- Abstract
The low temperature magnetic response of Mn(III)F(salen), salen = H14C16N2O2, an S = 2 linear-chain system, has been studied. Using a single crystal with the field applied perpendicular to the chain direction, torque magnetometry, down to 20 mK and up to 18 T, revealed a feature at 3.8 T when T ⩽ 400 mK. ESR (≈ 200 GHz) studies, using single crystals at 4 K and in 5 T, have not detected any signal. In 10 mT, the temperature dependence of the susceptibility of powder-like samples can be reasonably fit when J=kB = 50 K and g = 2. In addition, these data are unchanged for P ⩽ 1:0 GPa. Using a randomly-oriented, powder-like, deuterated (12 of 14 H replaced by D) sample of 2.2 g at 270 mK, neutron scattering data, acquired with the Cold Neutron Chopper Spectrometer at the Spallation Neutron Source, show several well defined excitations that may be from the zero-field energy levels of antiferromagnetic S = 2 spins with g = 2, J/kB = 50 K, D/kB = 2:8 K, and E/kB = 0:5 K.
- Subjects
MAGNETIZATION; SINGLE crystals; ANTIFERROMAGNETIC materials; MAGNETIC fields; NEUTRON scattering
- Publication
Acta Physica Polonica: A, 2014, Vol 126, Issue 1, p228
- ISSN
0587-4246
- Publication type
Article
- DOI
10.12693/APhysPolA.126.228