75As NMR study of the ternary iron arsenide BaFe2As2

Authors :: Fukazawa, H.
Hirayama, K.
Kondo, K.
Yamazaki, T.
Kohori, Y.
Takeshita, N.
Miyazawa, K.
Kito, H.
Eisaki, H.
Iyo, A.
Source :: J. Phys. Soc. Jpn. Vol.77 (2008) p093706.
Publication Year :: 2008
Abstract: We report 75As-NMR measurements of the ternary iron arsenide BaFe2As2. 75As-NMR spectra clearly revealed that magnetic transition occurs at around 131 K in our samples, which corresponds to the emergence of spin density wave. Temperature dependence of the internal magnetic field suggests that the transition is likely of the first order. The critical-slowing-down phenomenon in the spin-lattice relaxation rate 1/T1 is not pronounced in this material.<br />Comment: To be published in J. Phys. Soc. Jpn