Abstract
Data are presented on the structural and magnetic properties of Ln1 – x Ba x CoO3 – δ (Ln = Nd, Sm; 0 < x ≤ 0.66) samples slowly cooled in air after synthesis. The composition stability limits of the intermediate phases Ln1 – y Ba1 + y Co2O5 + γ and solid solutions are determined. The magnetic phase diagram of the Nd1 – x Ba x CoO3 – δ system is constructed.
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REFERENCES
Carter, S., Selcuk, A., Chater, R.J., et al., Oxygen Transport in Selected Nonstoichiometric Perovskite-Structure Oxides, Solid State Ionics, 1988, vol. 53, no. 6, pp. 597–605.
Yaremchenko, A.A., Kharton, V.V., Viskup, A.P., et al., Mixed Electronic and Ionic Conductivity of LaCo(M)O3 (M = Ga, Cr, Fe, or Ni): V. Oxygen Permeability of Mg-Doped La(Ga, Co)O3-??Perovskites, Solid State Ionics, 1999, vol. 120, nos. 1–4, pp. 65–74.
Van Doorn, R.H.E. and Burggraad, A.J., Structural Aspects of the Ionic Conductivity of La1-xSrxCoO3-?, Solid State Ionics, 2000, vol. 128, nos. 1–4, pp. 65–78.
Jonken, G.H. and Van Santen, J.H., Magnetic Compounds with Perovskite Structure: III. Ferromagnetic Compounds of Cobalt, Physica, 1953, vol. 19, no. 1, pp.?120–130.
Rao, C.N.R., Parkash, O., Bahadur, D., et al., Itinerant Electron Ferromagnetism in Sr2+-, Ca2+-, and Ba2+-Doped Rare-Earth Orthocobaltites (Ln 3+1-x M 2+x CoO3), J. Solid State Chem., 1977, vol. 22, no. 2, pp. 353–360.
Mahendiran, R., Raychaudhurit, A.K., Chainani, A., and Sarma, D.D., The Large Magnetoresistance of La1 ?xSrxCoO3 at Low Temperatures, J. Phys.: Condens. Matter, 1995, v. 7, no. 43, pp. L561–L565.
Asai, K., Yokura, O., Nishimori, N., et al., Neutron-Scattering Study of the Spin-State Transition and Magnetic Correlations in La1-xSrxCoO3 (x = 0 and 0.08), Phys. Rev. B: Condens. Matter, 1994, vol. 50, no. 5, pp. 3025-3032.
Caciuffo, R., Rinaldi, D., Barucca, G., et al., Structural Details and Magnetic Order of La1-xSrxCoO3 (x –0.3), Phys. Rev. B: Condens. Matter, 1999, vol. 59, no. 2, pp. 1068–1078.
Senaris-Rodriguez, M.A. and Goodenough, J.B., Magnetic and Transport Properties of the System La1 ?xSrxCoO3 ?–?(0 < x –0.50), J. Solid State Chem., 1995, vol. 118, no. 2, pp. 323–336.
Troyanchuk, I.O., Kasper, N.V., Khalyavin, D.D., et al., Magnetic and Structural Phase Transition in Some Orthocobaltites Doped by Ba of Sr Ions, J. Phys.: Condens. Matter, 1998, vol. 10, no. 28, pp. 6381–6389.
Taguchi, H., Spin State of Cobalt Ion in Nd(Cr1 ?xCox)O3, J. Solid State Chem., 1996, vol. 122, no. 2, pp. 297–302.
Kropanev, A.Y., Petrov, A.N., and Rabinovich, L.Y., Solid-Phase Synthesis of Rare-Earth Cobaltites with the Formula RCoO3 (R = Sm, Eu, Gd), Inorg. Mater., 1984, vol. 20, no. 1, pp. 116–120.
Troyanchuk, I.O., Khalyavin, D.D., Solovykh, T.K., et al., Magnetic and Crystal Structure Phase Transitions in R1 ?xBaxCoO3-y (R = Nd, Gd), J. Phys.: Condens. Matter, 2000, vol. 12, no. 11, pp. 2485–2493.
Maignan, A., Martin, C., Pelloquin, D., et al., Structural and Magnetic Studies of Ordered Oxygen-Deficient Perovskites LnBaCo2O5 +–, Closely Related to the “112” Structure, J. Solid State Chem., 1999, vol. 142, no. 2, pp. 247–260.
Caignaert, V., Mirabeau, I., Bouree, F., et al., Crystal and Magnetic Structure of YBaCuFeO5, J. Solid State Chem., 1995, vol. 114, no. 1, pp. 24–35.
Ormont, B.F., Soedineniya peremennogo sostava (Compounds of Variable Composition), Leningrad: Khimiya, 1969.
Plaza, I., Palacios, E., Bartolome, J., et al., Neutron Diffraction Study of the Magnetic Ordered Nd3+ in NdCoO3 and NdInO3 below 1 K, Physica B (Amsterdam), 1997, vol. 234, pp. 632–634.
Belov, K.P., Zvezdin, A.K., Kadomtseva, A.M., and Levitin, R.Z., Orientatsionnye perekhody v redkozemel'nykh magnetikakh (Orientational Transitions in Rare-Earth Magnetics), Moscow: Nauka,1979.
Sudaresan, A., Maignan, A., and Raveau, B., Effect of ASite Cation Size Mismatch on Charge Ordering and Colossal Magnetoresistance Properties of Perovskite Manganites, Phys. Rev. B: Condens. Matter, 1997, vol. 56, no. 9, pp. 5092–5095.
Vanitha, P.V., Santhosh, P.N., Singh, R.S., et al., Effect of the Cation Size Disorder on Charge Ordering in Rare-Earth Manganates, Phys. Rev. B: Condens. Matter, 1999, vol. 59, no. 21, pp. 13539–13541.
Mahesh, R. and Itoh, M., Role of Size Mismatch of ASite Cations of the First-Order Transition in Manganates, Phys. Rev. B: Condens. Matter, 1999, vol. 60, no. 5, pp. 2994–2997.
Yamaguchi, S., Okimoto, Y., and Takura, Y., Bandwidth Dependence of Insulator–Metal Transitions in Perovskite Cobalt Oxides, Phys. Rev. B: Condens. Matter, 1996, vol. 54, no. 16, pp. 11022–11025.
Troyanchuk, I.O., Kasper, N.V., Khalyavin, D.D., and Szymczak, H., Phase Transitions in the Gd0.5Ba0.5CoO3 Perovskite, Phys. Rev. Lett., 1998, vol. 80, no. 15, pp. 3380–3383.
Suard, E., Fouth, F., and Caignaert, V., Rhombohedral Distortion in the New Disordered LaBaCo2O6 Perovskite, Physica B (Amsterdam), 2000, vol. 276, pp. 254–255.
Caignaert, V., Millange, F., Damengs, B., et al., A New Ordered Oxygen-Deficient Manganite Perovskite: LaBaMn2O5.5. Crystal and Magnetic Structure, Chem. Mater., 1999, vol. 11, no. 4, pp. 930–938.
Troyanchuk, I.O., Trukhanov, S.V., Khalyavin, D.D., and Szymczak, H., Magnetic Properties of Anion Deficit Manganites Ln0.55Ba0.45MnO3 -–?(Ln = La, Nd, Sm, Gd, ––0.37), J. Magn. Magn. Mater., 1999, vol. 208, no. 3, pp. 217–220.
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Khalyavin, D.D., Sazonov, A.P., Troyanchuk, I.O. et al. Phase Relations in the Systems Ln1 – x Ba x CoO3 – δ(0 < x ≤ 0.66; Ln = Nd, Sm). Inorganic Materials 39, 1092–1096 (2003). https://doi.org/10.1023/A:1026055612650
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DOI: https://doi.org/10.1023/A:1026055612650