55Mn nuclear magnetic resonance for antiferromagnetic α-Mn2O3

Details 55Mn nuclear magnetic resonance for antiferromagnetic α-Mn2O3 55Mn nuclear magnetic resonance for antiferromagnetic α-Mn2O3

Jan 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011njph...13a3018j&link_type=abstract

New Journal of Physics, Volume 13, Issue 1, pp. 013018 (2011).

Physics

1

Scientific paper

The zero-field 55Mn nuclear magnetic resonance (NMR) spectra for antiferromagnetic α-Mn2O3 were obtained at low temperatures. The Gaussian-shaped spectrum was positioned around 314 MHz in the zero-temperature limit, and the linewidth was about 5 MHz. The magnetic moment estimated from the resonance frequency was 2.6μB per Mn3+ ion, which corresponds to 65% of 4μB, which is expected when only the contribution of spin to the magnetic moment is considered. The temperature dependence of the sublattice magnetization does not fit Bloch's T2 law well but instead fits the exponential form applicable when there is an initial energy gap in the dispersion relation of the spin wave. From the fitting, we obtained an energy gap of 1.82 meV and an anisotropy energy of 0.22 meV. The spin-spin relaxation time measured as a function of frequency shows that the Suhl-Nakamura interaction is suppressed by this energy gap. The line broadening is mostly influenced by the dipolar hyperfine interaction.

Affiliated with

Also associated with

No associations

Rating

55Mn nuclear magnetic resonance for antiferromagnetic α-Mn2O3 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 55Mn nuclear magnetic resonance for antiferromagnetic α-Mn2O3, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and 55Mn nuclear magnetic resonance for antiferromagnetic α-Mn2O3 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1608911