Stabilizing the Tb-based 214 cuprate by partial Pd substitution


Previously known to form only under high pressure synthetic conditions, here we report that the T′-type 214-structure cuprate based on the rare earth atom Tb is stabilized for ambient pressure synthesis through partial substitution of Pd for Cu. The new material is obtained in purest form for mixtures of nominal composition Tb1.96Cu0.8Pd0.2O4. The refined formula, in orthorhombic space group Pbca, with a = 5.5117(1) Å, b = 5.5088(1) Å, and c = 11.8818(1) Å, is Tb2Cu0.83Pd0.17O4. An incommensurate structural modulation is seen along the a axis by electron diffraction and high resolution imaging. Magnetic susceptibility measurements reveal long-range antiferromagnetic ordering at 7.9 K, with a less pronounced feature at 95 K; a magnetic moment reorientation transition is observed to onset at a field of approximately 1.1 T at 3 K. The material is an n-type semiconductor.

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  1. 1.

    V.H. Müller-Buschbaum and W. Wollschläger: Zur Kristallstruktur von Nd2CuO4. Z. Anorg. Allg. Chem. 414, 76 (1975).

    Article  Google Scholar 

  2. 2.

    X. Obradors, P. Visani, M.A. de la Torre, M.B. Maple, M. Tovar, F. Perez, P. Bordet, J. Chenavas, and D. Chateigner: Rare-earth magnetic ordering in the R2CuO4 cuprates (R = Tb, Dy, Ho, Er, and Tm). Physica C 213, 81 (1993).

    CAS  Article  Google Scholar 

  3. 3.

    H. Okada, M. Takano, and Y. Takeda: Magnetic properties of Nd2CuO4-type R2CuO4 (R = Y, Dy, Ho, Er, Tm) synthesized under high pressure: Weak ferromagnetism of Y2CuO4. Physical Review B 42, 6813 (1990).

    CAS  Article  Google Scholar 

  4. 4.

    J.D. Thompson, S.W. Cheong, S.E. Brown, Z. Fisk, S.B. Oseroff, M. Tovar, D.C. Vier, and S. Schultz: Magnetic properties of Gd2CuO4 crystals. Physical Review B, 39, 6660 (1989).

    CAS  Article  Google Scholar 

  5. 5.

    M. Tovar, X. Obradors, F. Pérez, S.B. Oseroff, R.J. Duro, J. Rivas, D. Chateigner, P. Bordet, and J. Chenavas: Weak ferromagnetism and spin-glass-like behavior in Tb2CuO4. J. Appl. Phys. 70, 6095 (1991).

    CAS  Article  Google Scholar 

  6. 6.

    Y. Tokura, H. Takagi, and S. Uchida: A superconducting copper oxide compound with electrons as the charge carriers. Nature 337, 345 (1989).

    CAS  Article  Google Scholar 

  7. 7.

    M.B. Maple: Electron-doped high TC superconductors. MRS Bull. 15, 60 (1990).

    CAS  Article  Google Scholar 

  8. 8.

    H. Okada, M. Takano, and Y. Takeda: Synthesis of Nd2CuO4-type R2CuO4 (R = Y, Dy, Ho, Er, Tm) under high pressure. Physica C 166, 111 (1990).

    CAS  Article  Google Scholar 

  9. 9.

    P. Bordet, J.J. Capponi, C. Chaillout, D. Chateigner, J. Chenavas, T. Fournier, J.L. Hodeau, M. Marezio, M. Perroux, G. Thomas, and A. Varela: High pressure synthesis and structural study of R2CuO4 compounds with R = Y, Tb, Dy, Ho, Er, Tm. Physica C 193, 178 (1992).

    CAS  Article  Google Scholar 

  10. 10.

    H.M. Luo, Y.Y. Hsu, B.N. Lin, Y.P. Chi, T.J. Lee, and H.C. Ku: Correlation between weak ferromagnetism and crystal symmetry in Gd2CuO4-type cuprates. Physical Review B 60, 119 (1999).

    Google Scholar 

  11. 11.

    M. Braden, W. Paulus, A. Cousson, P. Vigoureux, G. Heger, A. Goukassov, P. Bourges, and D. Petitgrand: Structure analysis of Gd2CuO4: A new modification of the T′ phase. Europhys. Lett. 25, 625 (1994).

    CAS  Article  Google Scholar 

  12. 12.

    I.P. Makarova, V.I. Simonov, M.K. Blomberg, and M.J. Merisalo: X-ray diffraction study of Nd2CuO4 single crystals at 20 K. Acta Crystallogr. B 52, 93 (1996).

    Article  Google Scholar 

  13. 13.

    A. Rouco, X. Obradors, M. Tovar, P. Bordet, D. Chateigner, and J. Chenavas: Magnetic-field-induced weak ferromagnetic order in Y2CuO4. Europhys. Lett. 20, 651 (1992).

    CAS  Article  Google Scholar 

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This material is based upon work supported by the National Science Foundation (Platform for the Accelerated Realization, Analysis, and Discovery of Interface Materials (PARADIM) under Cooperative Agreement No. DMR-1539918). The use of the Advanced Photon Source at Argonne National Laboratory was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357. The work at Brookhaven was sponsored by the U.S. DOE BES, by the Materials Sciences and Engineering Division under Contract DE-SC0012704, and supported by the resources of the Center for Functional Nanomaterials at Brookhaven National Laboratory, which is a U.S. DOE Office of Science Facility.

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Correspondence to Yuzki M. Oey or R. J. Cava.

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Oey, Y.M., Park, J.E., Tao, J. et al. Stabilizing the Tb-based 214 cuprate by partial Pd substitution. Journal of Materials Research 33, 1690–1697 (2018).

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