Anomalous spin-waves and the commensurate-incommensurate magnetic phase transition in LiNiPO4

Details Anomalous spin-waves and the commensurate-incommensurate magnetic phase transition in LiNiPO4 Anomalous spin-waves and the commensurate-incommensurate magnetic phase transition in LiNiPO4

2009-02-13

arxiv.org/abs/0902.2288v1

Physics

Condensed Matter

Materials Science

4 pages, 4 figures, accepted for publication in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.79.092413

Detailed spin-wave spectra of magneto-electric LiNiPO4 have been measured by neutron scattering at low temperatures in the commensurate (C) antiferromagnetic (AF) phase with ordering temperature 20.8 K. An anomalous low-energy mode is observed at the modulation vector of the incommensurate (IC) AF phase appearing above the 20.8 K. A linear spin-wave model based on Heisenberg exchange couplings and single ion anisotropies accounts for all the observed spin-wave dispersions and intensities. Along the b axis an unusually strong next-nearest-neighbor AF coupling competes with the dominant nearest-neighbor AF exchange interaction and causes the IC structure.

Affiliated with

Also associated with

No associations

Rating

Anomalous spin-waves and the commensurate-incommensurate magnetic phase transition in LiNiPO4 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 Anomalous spin-waves and the commensurate-incommensurate magnetic phase transition in LiNiPO4, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Anomalous spin-waves and the commensurate-incommensurate magnetic phase transition in LiNiPO4 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-357249