Magnetic and lattice coupling in single-crystal SrFe$_2$As$_2$: A neutron scattering study

Physics – Condensed Matter – Strongly Correlated Electrons

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Scientific paper

10.1103/PhysRevB.80.054407

A detailed elastic neutron scattering study of the structural and magnetic phase transitions in single-crystal SrFe$_2$As$_2$ reveals that the orthorhombic (O)-tetragonal (T) and the antiferromagnetic transitions coincide at $T_\texttt{O}$ = $T_\texttt{N}$ = (201.5 $\pm$ 0.25) K. The observation of coexisting O-T phases over a finite temperature range at the transition and the sudden onset of the O distortion provide strong evidences that the structural transition is first order. The simultaneous appearance and disappearance within 0.5 K upon cooling and within 0.25 K upon warming, respectively, indicate that the magnetic and structural transitions are intimately coupled. We find that the hysteresis in the transition temperature extends over a 1-2 K range. Based on the observation of a remnant orthorhombic phase at temperatures higher than \emph{T}$_\texttt{O}$, we suggest that the T-O transition may be an order-disorder transition.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Magnetic and lattice coupling in single-crystal SrFe$_2$As$_2$: A neutron scattering study 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 Magnetic and lattice coupling in single-crystal SrFe$_2$As$_2$: A neutron scattering study, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic and lattice coupling in single-crystal SrFe$_2$As$_2$: A neutron scattering study will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-193878

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.