Modulated non-collinear magnetic structure of (Co$_{0.97}$$^{57}$Fe$_{0.03}$)$_{4}$Nb$_{2}$O$_{9}$ as revealed by Mössbauer spectroscopy

Bo Zhang; Qifeng Kuang; Hua Pang; Fashen Li; Liyun Tang; Da Li; Zhiwei Li

doi:10.1016/j.jmmm.2023.170738

paper

Modulated non-collinear magnetic structure of (Co $_{0.97}$ $^{57}$ Fe $_{0.03}$ ) $_{4}$ Nb $_{2}$ O $_{9}$ as revealed by Mössbauer spectroscopy

arXiv:2202.09012 · doi:10.1016/j.jmmm.2023.170738

Abstract

In this work, we present detailed $^{57}$ Fe Mössbauer spectroscopy investigations of (Co $_{0.97}$ $^{57}$ Fe $_{0.03}$ ) $_{4}$ Nb $_{2}$ O $_{9}$ compound to study its possible magnetic structures. We have shown that the previously reported magnetic structures can not satisfactorily describe our low temperature Mössbauer spectra. Therefore, in combination with theoretical calculations, we have proposed a modulated helicoidal magnetic structure that can be used to simulate the whole series of our low temperature Mössbauer spectra. Our results suggest that the combination of previously reported different magnetic structures are only approximations of the average magnetic structure from our modulated helicoidal model. We anticipate that the proposed modulated non-collinear magnetic structure might shed light on the understanding of the complex magnetoelectric effects observed in this system.

arXiv commentTo be published in Journal of Magnetism and Magnetic Materials; online version: https://www.sciencedirect.com/science/article/pii/S0304885323003876 Or DOI link: https://doi.org/10.1016/j.jmmm.2023.170738

Modulated non-collinear magnetic structure of (Co0.97​57Fe0.03​)4​Nb2​O9​ as revealed by Mössbauer spectroscopy

Abstract

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Modulated non-collinear magnetic structure of (Co $_{0.97}$ $^{57}$ Fe $_{0.03}$ ) $_{4}$ Nb $_{2}$ O $_{9}$ as revealed by Mössbauer spectroscopy