UNIGE document Scientific Article
previous document  unige:30932  next document
add to browser collection
Title

Commensurate-Incommensurate Magnetic Phase Transition in Magnetoelectric Single Crystal LiNiPO4

Authors
Vaknin, David
Zarestky, J.L.
Published in Physical Review Letters. 2004, vol. 92, no. 20, p. 207201/1-207201/4
Abstract Neutron scattering studies of single crystal LiNiPO4 reveal a spontaneous first-order commensurate-incommensurate magnetic phase transition. Short- and long-range incommensurate phases are intermediate between the high temperature paramagnetic and the low temperature antiferromagnetic phases. The modulated structure has a predominant antiferromagnetic component, giving rise to satellite peaks in the vicinity of the fundamental antiferromagnetic Bragg reflection, and a ferromagnetic component, giving rise to peaks at small momentum transfers around the origin at (0,±Q,0). The wavelength of the modulated magnetic structure varies continuously with temperature. It is argued that the incommensurate short- and long-range phases are due to spin-dimensionality crossover from a continuous to the discrete Ising state.
Keywords Magnetic transitionMagnetoelectric effect (commensurate-incommensurate magnetic phase transition in magnetoelec. single crystal LiNiPO4)Phase transition (commensurate-incommensurate commensurate-incommensurate magnetic phase transition in magnetoelec. single crystal LiNiPO4)
Identifiers
Full text
Structures
Citation
(ISO format)
VAKNIN, David et al. Commensurate-Incommensurate Magnetic Phase Transition in Magnetoelectric Single Crystal LiNiPO4. In: Physical Review Letters, 2004, vol. 92, n° 20, p. 207201/1-207201/4. https://archive-ouverte.unige.ch/unige:30932

228 hits

1091 downloads

Update

Deposited on : 2013-11-05

Export document
Format :
Citation style :