“…30 In contrast, NMR spectroscopy on 57 Fe nuclei in zero applied magnetic field (ZF NMR) is a direct and more accurate method for determining the presence of SSMS as well as extracting its key characteristics such as anharmonicity parameter. 31 Moreover, without restoring the distribution of the fields, 32 it is premature to assert the presence of a cycloid only by the presence of an asymmetric Mössbauer spectrum: how can one distinguish between the presence of several nonequivalent iron positions?…”
The spatial spin-modulated structure in BiFeO3 is retained and the anharmonicity parameter decreases with crystallite size decreasing, followed by a change in the anisotropy type from an “easy axis” to an “easy plane” at about 50 nm.
“…30 In contrast, NMR spectroscopy on 57 Fe nuclei in zero applied magnetic field (ZF NMR) is a direct and more accurate method for determining the presence of SSMS as well as extracting its key characteristics such as anharmonicity parameter. 31 Moreover, without restoring the distribution of the fields, 32 it is premature to assert the presence of a cycloid only by the presence of an asymmetric Mössbauer spectrum: how can one distinguish between the presence of several nonequivalent iron positions?…”
The spatial spin-modulated structure in BiFeO3 is retained and the anharmonicity parameter decreases with crystallite size decreasing, followed by a change in the anisotropy type from an “easy axis” to an “easy plane” at about 50 nm.
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