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Magnetism of Fe in SrFe2As2: Local investigation by time differential perturbed angular distribution (TDPAD) spectroscopy |
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| Authors: | S K Mohanta S N Mishra S M Davane Neeraj Kumar A Thamizhavel S Layek Z Hossain S K Srivastava |
| Institution: | 1. Tata Institute of Fundamental Research (TIFR), Homi Bhabha Road, Mumbai, 400005, India 2. Department of Physics and Meteorology, Indian Institute of Technology, Kharagpur, 721302, India 3. Department of Physics, Indian Institute of Technology, Kanpur, 208016, India |
| Abstract: | Employing the γ-ray perturbed angular distribution technique, we have measured the magnetic hyperfine field of 54Fe in tetragonal and orthorhombic structural phases of SrFe2As2. In the tetragonal phase, the magnetic response of 54Fe shows Curie-Weiss type local susceptibility, indicating the presence of localized moment on Fe. The temperature dependence of the hyperfine field of 54Fe reflects quasi-two dimensional first order magnetic transition at 200 K. Our data indicate that Fe moments in the magnetically ordered phase of SrFe2As2 may be canted out of the ab-plane. |
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