High pressure experiments with synchrotron radiation

作者: Saburo Nasu

DOI: 10.1023/A:1012663330441

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摘要: Using a diamond anvil cell (DAC), high pressure 57Fe Mossbauer spectroscopy has been performed with the nuclear forward scattering of synchrotron radiation. We used monochromatized radiation from an in‐vacuum type undulator as high‐density strong source quite small beam size. Pressure‐induced magnetic hyperfine interactions at in SrFeO2.97 detected 74 GPa by quantum‐beat modulation decay rate after collective excitation pulse. Evidence for transition antiferromagnetism to ferromagnetism Fe and 300 K obtained under transverse field.

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