%0 Journal Article
%J Physical Review B
%D 2009
%T Antiferromagnetism in the magnetoelectric effect single crystal LiMnPO4
%A Li, J. Y.
%A Tian, W.
%A Chen, Y.
%A Zarestky, J. L.
%A Lynn, J. W.
%A Vaknin, D.
%K antiferromagnetic materials
%K lifepo4
%K linipo4
%K lithium compounds
%K magnetic anisotropy
%K magnetic transitions
%K magnetic-properties
%K magnetoelectric effects
%K manganese compounds
%K spin dynamics
%K spin hamiltonians
%K spin waves
%K temperature
%K weak ferromagnetism
%M ISI:000265943200072
%P 144410
%R 10.1103/Physrevb.79.144410
%U ://000265943200072
%V 79
%X Elastic and inelastic neutron-scattering studies reveal details of the antiferromagnetic transition and intriguing spin dynamics in the magnetoelectric effect single crystal LiMnPO4. The elastic-scattering studies confirm that the system is antiferromagnetic below T-N=33.75 K with local magnetic moments (Mn2+; S=5/2) that are aligned along the crystallographic a axis. The spin-wave dispersion curves propagating along the three principal axes, determined by inelastic scattering, are adequately modeled in the linear spin-wave framework assuming a spin Hamiltonian that is parametrized by inter- and in-plane nearest- and next-nearest-neighbor interactions and by easy-plane anisotropy. The temperature dependence of the spin dynamics makes this an excellent model many-body spin system to address the question of the relationship between spin-wave excitations and the order parameter.
%Z 443XDTimes Cited:0Cited References Count:47
%8 04/01
%@ 1098-0121