Applications of the Mossbauer Effect

In a conventional Fe Mossbauer experiment with a powder sample, one would observe a so-called quadrupole doublet with two resonance lines of equal intensities. The separation of the lines, as given by (4.36), represents the quadrupole splitting The parameter Afg is of immense importance for chemical applications of the Mossbauer effect. It provides information about bond properties and local symmetry of the iron site. Since the quadrupole interaction does not alter the mean energy of the nuclear ground and excited states, the isomer shift S can also be derived from the spectrum it is given by the shift of the center of the quadrupole spectrum from zero velocity. 

Pure nuclear magnetic hyperfine interaction without electric quadrupole interaction is rarely encountered in chemical applications of the Mossbauer effect. Metallic iron is an exception. Quite frequently, a nuclear state is perturbed simultaneously by... 

Mprup, S. In International Conference on the Applications of the Mossbauer Effect Proceedings, Science Academy, New Delhi, 1982, p. 91... 

Danon, J., IAEA Panel on Applications of the Mossbauer Effect in Chemistry and Solid State Physics, p. 89, International Atomic Energy Agency, Vienna, 1965. 

Herber, R. H., Applications of the Mossbauer Effect in Ghemistry and Solid-state Physics, p. 121, IAEA, Vienna, Austria, 1966. 

Thiel RC, Dirken MW Zanoni R (1990) Proceedings ICAME Budapest 89 Applications of the Mossbauer Effect, J.C. Baltzer, Bazel 1729... 

Nagy DL, L r K Kajcsos Zs (1989) Applications of the Mossbauer Effect, Proc Intern Conf AppI Moss Spectr JC Baltzer, Bazel... 

The advantage of the technique is that the particle size may be determined with the sample in a controlled atmosphere and at a temperature different from 300 K, i.e., in situ particle size measurement, and measurement of changes in particle size may be possible. The problem, however, is that the quantitative relation between the Mossbauer parameters and particle size is rather complex and in some cases not theoretically available. Therefore, the application of the Mossbauer effect to particle size measurement is often facilitated through an experimental calibration of the Mossbauer parameters to particle size for the particular catalyst system of interest, i.e., the measurement of the parameters for a set of samples of known particle size as determined by other experimental methods. This point will become clearer below, as the effects of particle size on the Mossbauer parameters are discussed. 

Application of the Mossbauer effect, which is essentially a bulk phenomenon, to the study of surfaces has received significant attention in recent years. The usefulness of this technique lies in its ability to determine the electronic environment and symmetry of the surface nucleus, and it offers a method of investigation that is clearly complementary to other physical methods for the characterization of solid surfaces. Mossbauer spectroscopy has the attractive advantage that it may be used at a variety of pressures and can be applied to the study of heterogeneous catalysis and adsorption processes to probe the nature of the solid surface and its electronic modification when holding adsorbed species. 

Application of the Mossbauer effect 37 in the study of organometallic (129) compounds... 

DeWaaid, H., Kemerink, G. Int. Conf. Applications of the Mossbauer Effect, Corfu,... 

Applications of the Mossbauer effect in chemistry and solid state physics. Intern. At. Energy Agency, Techn. Repts. Ser. No. 50, Vienna 1966. 

Dezsi, I. (ed.) Proceeding of the Conference on the Application of the Mossbauer Effect. Tihany, Hungary, Akameiai Kiado, Budapest, 1971. 

Shabani AAT, Rancour DG, Lalonde AE (1998) Determination of cis and trans Fe populations in 2M muscovite by Mossbauer spectroscopy. Hyper Interact 117 117-129 Sharov AS, Sorokina NA, Goncharov GN, Sakharov AN (1985) Mossbauer and EPR studies of iron states in muscovite. In YM Kagan IS Lyubutin (eds) IntT Conf on the Applications of the Mossbauer Effect, 5 1775-1778, Alma-Ata, USSR... 

Although a number of possible applications of the Mossbauer effect have been suggested in the previous chapters, it is worthwhile to consider its use in general terms before developing the theme of more specific chemical application. Generally speaking, three broad areas can be defined in addition to that of the basic phenomenon of resonant absorption itself namely relativity and general physics, nuclear physics, and solid-state physics and chemistry. 

Johnston, J.H. and Lewis, D.G. (1986). A study of the initially formed hydrolysis species and intermediate polymers and their role in determining the product iron oxides formed in the weathering of iron. In Industrial Applications of the Mossbauer Effect, Long, G. J. and Stevens, J.G (eds). Plenum Press, New York, pp. 565-593. 

In the present discussion an attempt has been made to summarize some of the basic and important aspects on bonding and spectral analysis on routine application of the Mossbauer effect. In addition to clarifying the basic principles of the Mossbauer effect a number of applications to different kind of inorganic materials have been used to illustrate the kind of information to be obtained. Because the problems discussed cover a large scientific field the present discussion has been limited on Fe, Sn, Te and Sb Mossbauer isotopes. In our opinion such transitions make an even greater contribution to understanding of the nature of inorganic non-crystalline solids. 

Kon] Konygin, G.N., Yelsukov, E.P., Barinov, V.A., Synthesis of Amorphous C-Fe-Si Alloys by Ball Milling of Fe-Si Powder in Toluene , Conference Proceedings. Vol. 50 International Conference on the Applications of the Mossbauer Effect. ICAME-95. Soc. Italiana di Fisica., Bologna, Italy, 157-60, (1996) (Abstract)... 

His significant position in the community is seen in his active participation in the Hungarian Academy of Sciences where he chaired the Division of Radiochemistry (1993-2002). He was also a member of the International Board on the Applications of the Mossbauer Effect (IBAME 1990-1998) and holds editorial spots on some of the top journals in the field. 

M. Gracia, j.F. Marco, F. Plazaola, eds.. Industrial Applications of the Mossbauer Effect, American Institute of Physics, 2005. 

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