نتایج جستجو برای: mössbauer studies
تعداد نتایج: 1428211 فیلتر نتایج به سال:
New aspects of synchrotron Mössbauer microscopy are presented. A 5 µm spatial resolution is achieved, and sub-micrometer resolution is envisioned. Two distinct and unique methods, synchrotron Mössbauer imaging and nuclear resonant incoherent X-ray imaging, are used to resolve spatial distribution of species that are chemically and magnetically distinct from one another. Proof-of-principle exper...
Z. Naturforsch. 42b, 573-578 (1987); eingegangen am 8. Januar 1987 Phosphinetetracarbonyliron, Phosphitetetracarbonyliron, IR Spectra, P NMR Spectra, Fe Mössbauer Spectra A series of trigonal bipyramidal Fe(CO)4L complexes has been prepared and characterized by infrared, Fe Mössbauer and P NMR spectroscopy. A linear correlation, with a negative slope, between the CO stretching frequencies and t...
A new method of performing Mössbauer spectroscopy with synchrotron radiation is demonstrated that involves using a high-speed periodic shutter near the focal spot of a microfocused X-ray beam. This fast microshuttering technique operates without a high-resolution monochromator and has the potential to produce much higher signal rates. It also offers orders of magnitude more suppression of unwan...
Mössbauer (nuclear ?-resonance) spectroscopy is a powerful technique which actively used in various fields from physics and chemistry to biology medicine. Rudolf L. Mössbauer, who observed nuclear ?-resonance published his results 1958, got Nobel Prize 1961 for this discovery. 57Fe the most widely nucleus spectroscopy. Therefore, large variety of compounds containing iron can be studied by It w...
Mixed nano iron oxides powder containing goethite (α-FeOOH), hematite (α-Fe(2)O(3)) and ferrihydrite (Fe(5)HO(8)·4H(2)O) was synthesized through surfactant mediation-precipitation route using cetyltrimethyl ammonium bromide (CTAB). The X-ray diffraction, FTIR, TEM, Mössbauer spectroscopy were employed to characterize the sample. These studies confirmed the nano powder contained 77% goethite, 9%...
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