论文标题
调制的非授权磁性结构（CO $ _ {0.97} $$^{57} $ fe $ _ {0.03} $）$ _ {4} $ _ {4} $ nb $ _ {2} $ _ {2} $ o $ $ _ {9} $
Modulated non-collinear magnetic structure of (Co$_{0.97}$$^{57}$Fe$_{0.03}$)$_{4}$Nb$_{2}$O$_{9}$ as revealed by Mössbauer spectroscopy
论文作者
论文摘要
In this work, we present detailed $^{57}$Fe Mössbauer spectroscopy investigations of (Co$_{0.97}$$^{57}$Fe$_{0.03}$)$_{4}$Nb$_{2}$O$_{9}$ compound to study its possible magnetic structures.我们已经表明，先前报道的磁性结构无法令人满意地描述我们的低温Mössbauer光谱。因此，结合理论计算，我们提出了一种调制的螺旋磁结构，该结构可用于模拟整个低温Mössbauer光谱。我们的结果表明，先前报道的不同磁性结构的组合仅是我们调制的螺旋模型的平均磁结构的近似值。我们预计提出的调制非连接磁性结构可能会阐明对该系统中观察到的复杂磁电效应的理解。
In this work, we present detailed $^{57}$Fe Mössbauer spectroscopy investigations of (Co$_{0.97}$$^{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.
