Abstract
YBa2(Cu1-x 57Fe x )3O7−y powder samples withx=0.02 and 0.03 were uniaxiallyc-aligned in epoxy in a magnetic field of 7.5 T. An X-ray map of the distribution of the orientation of the crystallographicc-axes of the individual crystallites was determined.57Fe Mössbauer spectra were recorded at room temperature as a function of the angle between the texture axis and the observation direction. Different sets of EFG parameters were selected from the literature and the fit constraints were equally set for all. Using a model of the measured texture function and accounting for polarization-dependent blackness effects, a simultaneous fit of the Mössbauer spectra results in minimumϰ 2 for the EFG set determined previously from CEMS data on this films.
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L. Bottyán, B. Molnár, D.L. Nagy, I.S. Szücs, J. Tóth, J. Dengler, G. Ritter and J. Schober, Phys. Rev. B38(1988)11373.
P. Boolchand, C. Blue, K. Elgaid, I. Zitkovsky, D. McDaniel, W. Huff, B. Goodman, G. Lemon, D.E. Farrell and B.S. Chandrasekhar, Phys. Rev. B38(1988)11313.
R.A. Brand, Ch. Sauer, H. Lütgemeier, B. Rupp and W. Zinn, Physica C156(1988)539;
R.A. Brand, Ch. Sauer, H. Lütgemeier, P.M. Meuffels and W. Zinn, Hyp. Int. 55(1990)1229.
P. Chaudouët, S. Garçon, J.P. Sénateur, F. Weiss, P. Dalmas de Reótier, P. Vulliet and A. Yaouanc, Physica C153–155(1988)1539.
V. Cherchersky and A. Nath, Hyp. Int. 72(1992)173.
S. Nasu, H. Kitagawa, M. Yoshida, Y. Oda, K. Ueda, T. Kohara, T. Shinjo, K. Asayama and F.E. Fujita, Hyp. Int. 55(1990)1355.
V.A. Andrianov, O.L. Anisimova, M.G. Kozin, A.Y. Pentin, S.I. Semenov, V.S. Shpinel, L.I. Leonyuk, V.V. Moshchalkov and S.V. Red'ko, Physica C166(1990)248.
I.V. Zubov, A.S. Ilyushin, R.N. Kuz'min, V.S. Moisa, A.A. Novalova, S.V. Red'ko, L.I. Leonyuk and A.A. Zhukov, Hyp. Int. 55(1990)1417.
J. Dengler, G. Ritter, G. Saemann-Ischenko, B. Roas, L. Schultz, B. Molnár, D.L. Nagy and I.S. Szücs, Hyp. Int. 55(1990)1267; on EFG ofD, see J. Dengler, Thesis, University of Erlangen-Nümberg (1992).
K.M. Hasselbach and H. Spiering, Nucl. Instr. Meth. 176(1980)537.
In ref. [7], subspectra B and C were combined into a single one. In Ref. [8], while using a thick absorber, very probably no blackness correction was made, and anη of 0.6 found for all species.
D.L. Nagy, K. Kulcsár, G. Ritter, H. Vogel, R. Zimmermann, I. Dézsi and M. Pardavi-Horváth, J. Phys. Chem. Solids 36(1975)759.
H. Spiering, in:Mössbauer Spectroscopy Applied to Inorganic Chemistry, Vol. I, ed. G.J. Long (Plenum Press, New York-London, 1984).
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On leave from: Institute for Low Temperature Physics and Engineering, Ukr. Acad. Sci., Kharkov, Ukraine.
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Bottyán, L., Dengler, J., Faigel, G. et al. EFG determination in magnetic field oriented powders of YBa2(Cu1−x 57Fe x )3O7−y superconductors: A test of existing models. Hyperfine Interact 93, 1647–1651 (1994). https://doi.org/10.1007/BF02072922
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DOI: https://doi.org/10.1007/BF02072922