Low temperature synthesis, structure and magnetic properties of La0.85 (Na(1-x)K(x))0.15MnO3 perovskites: The role of A cation size disparity in the electronic properties of mixed-valence manganates

Journal of Materials Chemistry

Volumn 9, Issue 8, 1999, Pages 1793-1799

  El Fadli, Z ^a,b   Coret, E ^a   Sapina F ^a   Martinez, E ^a   Beltran A ^a   Beltran D ^a   Lloret, F ^a  

^a UNIVERSITY OF VALENCIA   (Spain)

^b FACULTÉ DES SCIENCES   (Morocco)

Author keywords

[No Author keywords available]

Indexed keywords

INORGANIC COMPOUND; PEROVSKITE; UNCLASSIFIED DRUG;

ARTICLE; CHEMICAL ANALYSIS; CHEMICAL STRUCTURE; MAGNETIC FIELD; MAGNETISM; STOICHIOMETRY; STRUCTURE ANALYSIS; SYNTHESIS; TEMPERATURE DEPENDENCE; X RAY POWDER DIFFRACTION;

EID: 0032837714     PISSN: 09599428     EISSN: None     Source Type: Journal    
DOI: 10.1039/a901904i     Document Type: Article

References (41)

1. (a) R. M. Kusters, J. Singleton, D. A. Keen, R. McGreevy and W. Hayes, Physica B, 1989, 155, 362;
2. (b) R. von Helmot, J. Wecker, B. Holzapfel, L. Schultz and K. Samwer, Phys. Rev. Lett., 1993, 71, 2331;
3. (c) S. Jin, T. H. Tiefel, M. McCormack, R. A. Fastnacht, R. L. Ramesh and H. Chen, Science, 1994, 64, 413.
4. (a) Z. Zener, Phys. Rev., 1951, 82, 403;
5. (b) P. W. Anderson, Phys. Rev., 1955, 100, 675;
6. (c) P. G. De Gennes, Phys. Rev., 1960, 116, 141.
7. (a) P. Schiffer, A. P. Ramirez, W. Bao and S. W. Cheong, Phys. Rev. Lett., 1995, 75, 3336;
8. (b) A. Urushibara, Y. Moritomo, T. Arima, A. Asamitsu, G. Kido and Y. Tokura, Phys. Rev. B, 1995, 51, 14103.
9. (a) A. Maignan, V. Caignert, Ch. Simon, M. Hervieu and B. Raveau, J. Mater. Chem., 1995, 5, 1091;
10. (b) H. Y. Hwang, S. W. Cheong, P. G. Radaelli, M. Marezio and B. Batlogg, Phys. Rev. Lett., 1995, 75, 914;
11. (c) R. Mahesh, R. Mahendiran, A. K. Raychaudhuri and C. N. R. Rao, J. Solid State Chem., 1995, 120, 204;
12. (d) J. Fontcuberta, B. Martinez, S. Piñol, J. L. García-Muñoz and X. Obradors, Phys. Rev. Lett., 1996, 76, 1122.
13. (a) L. M. Rodriguez-Martinez and J. P. Attfield, Phys. Rev. B, 1996, 54, R15622;
14. (b) L. M. Rodriguez-Martinez and J. P. Attfield, Phys. Rev. B, 1998, 58, 2426;
15. (c) J. P. Attfield, Chem. Mater., 1998, 10, 3239.
16. (a) F. Damay, C. Martin, A. Maignan and B. Raveau, J. Appl. Phys., 1997, 82, 6181;
17. (b) B. Raveau, A. Maignan, C. Martin and M. Hervieu, Chem Mater., 1998, 10, 2641.
18. J. P. Attfield, A. L. Kharlanov and J. A. McAllister, Nature, 1998, 394, 157.
19. J. Fontcuberta, B. Martinez, S. Piñol, J. L. García-Muñoz and X. Obradors, Phys. Rev. B, 1997, 55, R668.
20. J. Xu, W. H. Tang and J. K. Liang, J. Phys.: Condens. Matter, 1998, 10, 1387.
21. (a) Y. Ng-Lee, F. Sapiña, E. Martinez-Tamayo, J. V. Folgado, R. Ibañez, D. Beltrán, F. Lloret and A. Segura, J. Mater. Chem., 1997, 7, 1905;
22. (b) T. Boix, F. Sapiña, Z. El-Fadli, E. Martinez, A. Beltrán, J. Vergara, R. J. Ortega and K. V. Rao, Chem. Mater., 1998, 19, 1569;
23. (c) J. Vergara, R. J. Ortega-Hertogs, V. Madurga, F. Sapiña, Z. El-Fadli, E. Martinez, A. Beltrán and K. V. Rao, Phys. Rev. B, in press.
24. 3, which are used for comparison, were obtained by using the same preparative procedure.
25. J. Rodriguez-Carvajal, FULLPROF Program, personal communication.
26. V. Primo, DRXWin and CreaFit version 2.0, graphical and analytical tools for powder XRD patterns, Powder Diffr., 1999, 14, 70.
27. 3 were also obtained by thermogravimetric experiments, except for the x = 0.0 and 0.2 samples (which have transition temperatures lower than 300 K). In these last cases, the transition temperatures were determined by ac susceptibility measurements performed using a Lake Shore Cryotonics Inc. Model 7000 ac susceptometer (temperature range 100-325 K, frequency and exciting field, 333 Hz and 1 Oe, respectively). All the experimental results concerning these compounds are in good agreement with those previously reported in the literature for analogous compositions (ref. 4).
28. J. A. M. Van Roosmalen, E. H. P. Cordfunke, R. B. Helmholdt and H. W. Zandbergen, J. Solid State Chem., 1994, 110, 100.
29. A. H. Morris, The Physical Principles of Magnetism, Robert E. Kreiger Publishing Company, New York, 1980.
30. R. D. Shannon, Acta Crystallogr., Sect. A, 1976, 32, 751.
31. R. G. Pearson, Inorg. Chem., 1988, 27, 734.
32. F. Millange, V. Caignert, B. Domengès and B. Raveau, Chem. Mater., 1998, 10, 1974.
33. W. Archibald, J. S. Zhou and J. B. Goodenough, Phys. Rev. B, 1996, 53, 14445.
34. (a) P. G. Radaelli, G. Iannone, M. Marezio, H. Y. Hwang, S. W. Cheong, J. D. Jorgensen and D. N. Argyriou, Phys. Rev. B, 1997, 56, 8265;
35. (b) V. Caignert, E. Suard, A. Maignan, Ch. Simon and B. Raveau, C. R. Acad. Sci., Ser. IIb, 1995, 321, 515.
36. J. M. De Teresa, M. R. Ibarra, J. García, J. Blasco, C. Ritter, P. A. Algarabel, C. Marquina and A. del Moral, Phys. Rev. Lett., 1996, 76, 3392.
37. In fact, structural disorder in mixed valence manganates can be produced by the presence of at least two different cations at the A sites or, alternatively, be due to the presence of cationic vacancies at the B sites. The present discussion, as well as Attfield's analysis, is centered on the former source of structural disorder, which is consistent with the absence of cationic vacancies (δ≈0) in the series we are dealing with. The effect of disorder produced by cationic vacancies is discussed elsewhere (ref. 10).
38. (a) L. Sheng, D. Y. Xing, D. N. Sheng and C. S. Ting, Phys. Rev. Lett., 1997, 79, 1710;
39. (b) L. Sheng, D. Y. Xing, D. N. Sheng and C. S. Ting, Phys. Rev. B, 1997, 56, 7053.
40. In fact, by assuming this approach, the electronic energy variations associated with the decrease in the Mn-O bond length due to the FM-PM transition are being neglected, and the change in the electronic energy associated with the transition is approximated by considering that only the energy of the more external (conduction band) states is modified. Such a simplification finds experimental support in previous results such as those of Radaelli et al. in ref. 21 (a).
41. Q. Li, J. Zhang, A. R. Bishop and C. M. Soukoulis, Phys. Rev. B, 1997, 56, 4541.