Abstract
Mossbauer spectroscopy has recently been applied to study the new high Tc superconducting compounds RBa2Cu3Oz, using isotopes of rare earths mainly155Gd and151Eu, and57Fe, with different amounts of Fe ions replacing Cu. It was shown that magnetic moments on the rare earth site do not interfere with superconductivity. Fe at low concentrations (<1%) was found to replace Cu mainly in the Cu(1) site, and the Mossbauer spectra reveal different quadrupole doublets-fol lowing the different oxygen coordination around the Fe ion. The change of the relative intensities of the different doublets with z can easily be followed. For higher iron concentrations, it seems that increasing amounts of iron replace Cu in the Cu(2) site. For z<6.5, the iron reflects the magnetic ordering of Cu in this site, and the ordering temperature as function of z can be obtained. The agreement between neutron diffraction and Mossbauer measurements prove that Fe is a good probe for the magnetic behaviour of the Cu(2) ions. At low temperatures, Fe Mossbauer spectra of Fe in the Cu(1) site are also magnetically broadened, for all z.
Superconducting-magnetic phase diagrams are also obtained in Y1−x Prx Ba2 Cu3Oz as function of x and z. For z=7.1, TN changes sharply with x. TN=300, 230 and 35 K for x=0.8, 0.6 and 0.4 respectively, whereas for z=6.1 TN changes very little with x.
Mossbauer measurements performed on 5 at %57Fe doped in CalaBaCu3Oz show that most of the la occupy the Ba site. For z=7 about half the iron in the Cu(2) sites are magnetically ordered, with Heff=520 kOe and TN=400 K, even though the sample is superconducting with Tc=35 K. The possibility of coexistence between superconductivity and magnetic order in these systems will be discussed.
Similar content being viewed by others
References
J. G. Bednorz and K. A. Muller, Z. Phys. B 64 (1986) 189.
M. K. Wu, J. R. Ashburn, C. J. Torng, P. H. Hor, R. I. Meng, I. Goo, J. Huang, Y. Oz. Wang and C. W. Chu, Phys. Rev. Lett. 58 (1987) 908.
P. H. Hor, R. L. Meng, Y. Q. Wang, I. Gao, Z. J. Huang, J. Bechtold, K. Forster and C. W. Chu, Phys. Rev. Lett. 58 (1987) 1891.
R. J. Cava, B. Batlogg, R. B. Van Dover, D. W. Murphy, S. Sunshine, T. Siegrist, J. P. Remejka, E. A. Rietman, S. M. Zahurak and G. P. Espinosa, Phys. Rev. Lett. 58 (1987) 1676.
J. M. Tarascon, W. R. McKinnon, L. H. Greene, G. W. Hull and E. M. Vogel, Phys. Rev. B, 36 (1987) 226.
J. D. Jorgensen, B. W. Veal, W. K. Kwok, G. W. Crabtree, A. Umezawa, L. J. Nowicki and A. P. Paulikas, Phys. Rev. B, 36 (1987) 5731.
R. J. Cava, B. Batlogg, C. H. Chen, E. A. Rietman, S. M. Zahurak and D. Werder, Phys. Rev. B, 36 (1987) 5719.
J. M. Tranquada, D. E. Cox, W. P. Kunnmann, H. Moudden, G. Shirane, M. Suenaga, P. Zolliker, D. Vaknin, S. K. Sinha, M. S. Alvarez, A. J. Jacobson and D. C. Johnston, Phys. Rev. Lett. 60 (1988) 156; J. Rossat-Mignod, P. Burlet, M.J.G.M. Jurgens, J.Y. Henry and C. Vettier, Physica C 152 (1988) 19.
U. Neukirch, C. T. Simmons, P. Sladeczek C. Iaubschat, O. Strebel, G. Kaindl and D. D. Sarma, Europhys. Lett. 5 (1988) 567.
Y. Dalichaouch, M. S. Torikachvili, E. A. Early, B. W. Lee, C. L. Seaman, K. N. Yang, H. Zhou and M. B. Maple, Solid State Comm. 65 (1988) 1001.
G. Wortmann, C. T. Simmons and G. Kaindl, Solid State Comm. 64 (1987) 1057.
H. A. A. Smit M. W. Dirken, R. C. Thiel and I. J. de Jongh,ibid 64 (1987) 685.
H-J. Bornemannn, G. Czjzek, D. Eivert, C. Meyer and B. Renker J. Phys. F 17 (1987) L337.
J. A. Hodges, P. Imbert and G. Jehanno, Solid State Comm. 64 (1987) 1209.
G. Wortmann, S. Blumensoder, A. Freimuth and O. Riegel Phys. Lett. A. 126 (1988) 436.
P. Dalmas de Reotier, P. Villiet, A. Yaounc, P. Chaudouet, S. Garcon, J. P. Senateur, F. Weiss, L. Asch and G. M. Kalvins, Physica C 153–155 (1988) 1543.
P. Boolchand, R. N. Enzweiler, I. Zitkovsky, R. I. Meng, P. H. Hor, C. W. Chu and C. Y. Huang, Solid State Comm. 63 (1987) 521.
E. R. Bauminger, I. Felner, Y. Ichavi and I. Nowik, Inter. Conf. on Application of Mossbauer Effect Sept. 1989, Budapest.
E. R. Bauminger, A. Diamant, I. Felner, I. Nowik and S. Ofer, Phys. Ietters, 50A (1974) 321.
J. I. Peng, P. Klavius, R. N. Shelton, H. B. Radowsky, P. H. Hahn, I. Bernardez and M. Costantino, Phys. Rev.B 39 (1989) 9074.
E. R. Bauminger, M. Kowitt, I. Felner and I. Nowik, Solid State Comm. 65 (1988) 123.
I. Nowik, M. Kowitt, I. Felner and E. R. Bauminger, Phys. Rev. B 38 (1988) 6677.
B. D. Dunlap, J. D. Jorgensen, C. Segre, A. E. Dwight, J. I. Matykiewicz, H. Iee, W. Peng and C. W. Kimball, Physica C 158 (1989) 397.
P. Jmbert and G. Jehanno, J. Phys. France 49 (1987) 7.
C. B. Jue, E. Flgaid, I. Zilkovsky, P. Boolchand, D. McDaniel, W. C. H. Joiner, J. Oostens and W. Huff, Phys. Rev. 37 (1988) 5905.
Q. A. Pankhurst, A. H. Morrish, M. Raudsepp and X. Z. Zhou, J. Phys. C 21 (1988) 17.
I. Felner, Y. Wolfus, G. Hilschei and N. Pillmayr, Phys. Rev. B 39 (1989) 225.
X. Z. Zhou, M. Raudsepp, Q. A. Pankhurst, A. H. Morrish, Y. I. Iuo and I. Maartense, Phys. Rev. B 36 (1987) 7230.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Felner, I., Nowik, I. & Bauminger, E.R. Mössbauer spectroscopy in highT c superconductors. Hyperfine Interact 61, 1035–1049 (1990). https://doi.org/10.1007/BF02407572
Issue Date:
DOI: https://doi.org/10.1007/BF02407572