Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2008-06-10
J. Phys.:Condens. Matter 21 (2009) 056008
Physics
Condensed Matter
Strongly Correlated Electrons
4 pages, one figure
Scientific paper
10.1088/0953-8984/21/5/056008
The spinel MnV_2O_4 is a two-sublattice ferrimagnet, with site A occupied by the Mn^{2+} ion and site B by the V^{3+} ion. The magnon of the system, the transversal fluctuation of the total magnetization, is a complicated mixture of the sublattice A and B transversal magnetic fluctuations. As a result, the magnons' fluctuations suppress in a different way the manganese and vanadium magnetic orders and one obtains two phases. At low temperature (0,T^*) the magnetic orders of the Mn and V ions contribute to the magnetization of the system, while at the high temperature (T^*,T_N), the vanadium magnetic order is suppressed by magnon fluctuations, and only the manganese ions have non-zero spontaneous magnetization. A modified spin-wave theory is developed to describe the two phases and to calculate the magnetization as a function of temperature. The anomalous $M(T)$ curve reproduces the experimentally obtained ZFC magnetization.
No associations
LandOfFree
Ferrimagnetism of MnV_2O_4 spinel 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 Ferrimagnetism of MnV_2O_4 spinel, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ferrimagnetism of MnV_2O_4 spinel will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-174917