Applications of Mossbauer spectroscopy, Volume 1 (Cohen, Richard L. (Editor))
نویسندگان
چکیده
منابع مشابه
Mossbauer Spectroscopy and Crystal Chemistry of Aenigmatites
VIII VI IV Aenigmatite, Na4 (Fe2 +,Ti,Fe 3 +) 1 2 (SiFe 3 +) 12 0 40 , is a common constituent of sodium-rich alkaline igneous rocks and is classified as an open-branched single-chain silicate, whose structure is closely related to that of sapphirine. The first Mossbauer spectra of three valid aenigmatite specimens were recorded and the detailed crystal chemistry were obtained. In the Mossbauer...
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~ong the easy axis a at 4.2 K induces phase transi tionsatHI =39 kOe andH2 =46 kOe [1-3]. In this ~t1er we report the use of Mossbauer spectroscopy in external magnetic fields to study the magnetic struc (ure of each of the three phases. Previous Mossbauer work in FeCI2 · 2HZ0 includes apower study by Chandra and Hoy [4] and a single z crystal study by Johnson [5]. They found a magnetic o hyp...
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Using recoilless Mossbauer spectroscopy methods, we investigate the atomic absorption spectra of the 14.4keV transition in Fe compounds. The natural linewidth of this transition is determined to the correct order of magnitude with χν = .75. Hyperfine energy shifts in iron oxide and iron sulfate are investigated and measured. The ratio of ground and excited state magnetic moment in Fe is found t...
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MGssbauer experiments using the 86.5 keV resonance of 1 5 5 ~ d have been performed on Gdl+,Fe4B4 with and without substitution of 20 % of Gd by Nd or Sm. All these alloys are characterized by a very large quadrupolar interaction. At T = 4.2 K, i.e. below the magnetic temperature order, the Miissbauer spectra are quite different for the three alloys, owing to the different direction of the Gd m...
متن کاملMossbauer Spectroscopy of Iron Biomineralization Products in Magnetotactic Bacteria
Mcissbauer spectroscopy is a nuclear i-rav resonance technique that has been extensively tv!i 'iill' s,,'stems. applied to the study of the electronic properties of iron in biological '. The power of the technique lies in its sensitivity to the effects of the physical environment (nature ]18 lw and disposition of ligands, magnetic structure, etc.) on 57Fe nuclei. Moreover, it is sensitive ' onl...
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ژورنال
عنوان ژورنال: Journal of Chemical Education
سال: 1978
ISSN: 0021-9584,1938-1328
DOI: 10.1021/ed055pa178.3