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Observations of Cef-Split Intermultiplet Transitions in Optically Opaque EuBa2Cu3O7 Using Inelastic Neutron Scattering

Published online by Cambridge University Press:  22 February 2011

U. Staub ,
L. Soderholm ,
R. Osborn ,
E. Balcar  and
V. Trunov
U. Staub
Affiliation:
Argonne National Laboratory, Chemistry Division, Argonne, IL 60439 USA
L. Soderholm
Affiliation:
Argonne National Laboratory, Chemistry Division, Argonne, IL 60439 USA
R. Osborn
Affiliation:
Argonne National Laboratory, Material Sciences Division, Argonne, IL 60439
E. Balcar
Affiliation:
Atominstitut der Oesterriechischen Universitäten, A-1020 Vienna, Austria
V. Trunov
Affiliation:
St. Petersburg Nuclear Physics Institute, Gatchina, St. Petersburg, 188350 Russia
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Abstract

Inelastic neutron scattering (INS) results on the intermultiplet transitions J=0 → 1 and J=1 → 2 in optically opaque EuBa2Cu3O7 are reported. Whereas these multiplets are split by the crystalline electric field (CEF), their low J values are influenced to first order only by the second-order (J=1) and additional fourth-order (J=2) CEF parameters. and the spinorbit coupling parameter were obtained by fitting the splitting of the J=l multiplet and the energy separation between the J=0 and 1 multiplets. The J=0 → 1 splitting observed here is smaller than previously seen by optical spectroscopic studies on a variety of transparent, ionic compounds, necessitating fitting of the free-ion parameter. Additional spectroscopic information on the J=2 multiplet indicates that additional fitting of free ion parameters must be included to adequately model the observed low energy separation between the two lowest J-multiplets. Preliminary calculation on the Q-dependence of the CEF split J=0 → 1 transitions and the comparison with observations are presented.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 376: Symposium BB – Neutron Scattering in Materials Science , 1994 , 535
Copyright
Copyright © Materials Research Society 1995

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References

REFERENCES

1 Carnall, W. T., Goodman, G. L., Rajnak, K., and Rana, R. S., J. Chem. Phys. 90, 3443 (1989).Google Scholar
2 Morrison, C. A. and Leavitt, R. P., in Handbook on the Physics and Chemistry of Rare Earths, edited by Gschneider, K. A. and Eyring, L. (North-Holland, Amsterdam, 1982), Vol. 5, p. 461.Google Scholar
3 Soderholm, L., Loong, C.-K., and Kern, S., Phys. Rev. B. 45, 10062 (1992).Google Scholar
4 Furrer, A., Brüesch, P., and Unternahrer, P., Phys. Rev. B 38, 4616 (1988).Google Scholar
5 Staub, U., Mesot, J., Guillaume, M., Allenspach, P., Furrer, A., Mutka, H., Bowden, Z., and Taylor, A. D., Phys. Rev. B 50,4068 (1994).Google Scholar
6 Mesot, J., Allenspach, P., Staub, U., Furrer, A., Mutka, H., Osborn, R., and Taylor, A., Phys. Rev B 47, 6027 (1993).Google Scholar
7 Staub, U., Allenspach, P., Mesot, J., Furrer, A., Blank, H., and Mutka, H., Physica B 180 181, 417 (1992).Google Scholar
8 Mesot, J., Allenspach, P., Staub, U., Furrer, A., and Mutka, H., Phys. Rev. Lett. 70, 865 (1993).Google Scholar
9 Osborn, R. and Goremychkin, E. A., Physica C 185, 1179 (1991).Google Scholar
10 Boothroyd, A. T., Doyle, S. M., Paul, D. McK., and Osborn, R., Phys. Rev. B 45, 10075 (1992).Google Scholar
11 Bootyhroyd, A. T., Doyle, S. M., and Osborn, R., Physica C 217, 425 (1993).Google Scholar
12 Staub, U., Soderholm, L., Osborn, R., Guillaume, M., Furrer, A., and Trunov, V., J. Alloys and Compds to be publ. (1994).Google Scholar
13 Balcar, E. and Lovesey, W., Theory of Magnetic Neutron and Photon Scattering (Oxford University Press, Oxford, 1989).Google Scholar
14 Needham, L. M., Williams, W. G., and Taylor, A. D., J. Phys. Conf. Matt. 5, 2591 (1993).Google Scholar
15 Taylor, A. D., Osborn, R., McEwen, K. A., Stirling, W. G., Bowden, A. A., Williams, W. G., Balcar, E., and Lovesey, S. W., Phys. Rev. Lett. 61, 1309 (1988).Google Scholar
16 Wybourne, Brian G., Spectroscopic Properties of Rare Earths (Interscience, New York, 1965 pp236).Google Scholar
17 Crosswhite, H. M. and Crosswhite, H., J. Opt. Soc. Am. B 1, 246 (1984).Google Scholar
18 Soderholm, L., Loong, C.-K., and Staub, U., in Handbook on the Physics and Chemistry of Rare Earths, edited by Gschneider, K. A. and Eyring, L. (North-Holland, Amsterdam, p. in preparation.Google Scholar
19 Staub, U., Balcar, E., Osborn, R., and Soderholm, L., to be publishedGoogle Scholar