Abstract
A new family of manganites, LnBaMn2O6 − γ(Ln = Nd, Sm, and Gd), is obtained by the method of topotactic reactions. In these compounds, rare-earth and barium ions are ordered, which results in a dramatic increase in the temperature of transition to the paramagnetic state. Thus, a SmBaMn2O6 compound with a disordered arrangement of Sm and Ba ions is a spin glass with the freezing temperature of magnetic moments T f = 40 K, whereas in the state with an ordered Sm and Ba arrangement, the Curie temperature T C, is ∼ 280 K. Below T C, a maximum in resistivity and magnetoresistance is observed. The possible models of magnetic ordering are discussed.
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References
J. M. D. Coey, M. Viret, and S. von Molnar, Adv. Phys. 48, 167 (1999).
Y. Tomioka, A. Asamitsu, Y. Moritomo, et al., Phys. Rev. Lett. 74, 5108 (1995).
M. Tokunaga, N. Miura, Y. Tomioka, and Y. Tokura, Phys. Rev. B 57, 5259 (1998).
Y. Tokura and Y. Tomioka, J. Magn. Magn. Mater. 200, 1 (1999).
G. H. Jonker and J. H. Van Santen, Physica (Amsterdam) 16, 337 (1950).
G. Matsumoto, J. Phys. Soc. Jpn. 29, 606 (1970).
G. Matsumoto, J. Phys. Soc. Jpn. 29, 615 (1970).
X. Gang, E. J. McNiff, G. Q. Gong, et al., Phys. Rev. B 54, 6073 (1996).
A. Urushibara, Y. Moritomo, T. Arima, et al., Phys. Rev. B 51, 14 103 (1995).
K. Kikuchi, H. Chiba, M. Kikuchi, and Y. Syono, J. Solid State Chem. 146, 1 (1999).
I. O. Troyanchuk, D. D. Khalyavin, S. V. Trukhanov, and H. Szymczak, J. Phys.: Condens. Matter 11, 8707 (1999).
A. Barnabe, F. Millange, A. Maignan, et al., Chem. Mater. 10, 252 (1998).
I. O. Troyanchuk, S. V. Trukhanov, H. Szymczak, and K. Bärner, J. Phys.: Condens. Matter 12, L155 (2000).
S. V. Trukhanov, I. O. Troyanchuk, I. M. Fita, et al., J. Magn. Magn. Mater. 237, 276 (2001).
I. O. Troyanchuk, S. V. Trukhanov, D. D. Khalyavin, and H. H. Szymczak, J. Magn. Magn. Mater. 208, 217 (2000).
J. M. González-Calbet, E. Herrero, N. Rangavittal, et al., J. Solid State Chem. 148, 158 (1999).
V. Caignaert, F. Millange, B. Domenges, and B. Raveau, Chem. Mater. 11, 930 (1999).
P. Shifer, A. P. Ramírez, W. Bao, et al., Phys. Rev. Lett. 75, 3336 (1995).
R. D. Shanon, Acta Crystallogr., Sect. A: Cryst. Phys., Diffr., Theor. Gen. Crystallogr. 32, 751 (1976).
J. D. Cashion, A. H. Cooke, D. M. Martin, and M. R. Wells, J. Appl. Phys. 41, 1193 (1970).
P. V. Vanitha, P. N. Santosh, R. S. Sing, et al., Phys. Rev. B 59, 13 539 (1999).
Lide M. Rodrígez-Martínez and J. Paul Attfield, Phys. Rev. B 58, 2426 (1998).
H. Fujishiro, M. Ikebe, and Y. Konno, J. Phys. Soc. Jpn. 67, 1799 (1998).
I. O. Troyanchuk, S. V. Trukhanov, H. Szymczak, et al., Zh. Éksp. Teor. Fiz. 120, 183 (2001) [JETP 93, 161 (2001)].
E. E. Havinga, Philips Rev. Rep. 21, 432 (1966).
T. P. Beales, M. Molgg, J. Jutson, and C. M. Friend, Phys. Status Solidi A 161, 271 (1997).
E. Suard, F. Fauth, V. Caignaert, et al., Phys. Rev. B 61, R11 871 (2000).
J. A. Mcallister and J. P. Attfield, J. Mater. Chem. 8, 1291 (1998).
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Translated from Kristallografiya, Vol. 47, No. 4, 2002, pp. 716–723.
Original Russian Text Copyright © 2002 by Troyanchuk, Trukhanov, Szymczak.
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Troyanchuk, I.O., Trukhanov, S.V. & Szymczak, G. New family of LnBaMn2O6 − γ manganites (Ln = Nd, Sm, and Gd). Crystallogr. Rep. 47, 658–665 (2002). https://doi.org/10.1134/1.1496067
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DOI: https://doi.org/10.1134/1.1496067