Browse > Article
http://dx.doi.org/10.5012/bkcs.2013.34.6.1679

Effect of Partial Substitution of Magnetic Rare Earths for La on the Structure, Electric Transport And Magnetic Properties of Oxygen Deficient Phase LaSr2MnCrO7-δ  

Singh, Devinder (Department of Chemistry, University of Jammu)
Sharma, Sushma (Department of Chemistry, University of Jammu)
Mahajan, Arun (Department of Chemistry, University of Jammu)
Singh, Suram (Department of Chemistry, University of Jammu)
Singh, Rajinder (Department of Chemistry, University of Jammu)
Publication Information
Bulletin of the Korean Chemical Society / v.34, no.6, 2013 , pp. 1679-1683 More about this Journal
Abstract
Intergrowth perovskite type complex oxides $La_{0.8}Ln_{0.2}Sr_2MnCrO_{7-{\delta}}$ (Ln=La, Nd, Gd, and Dy) have been synthesized by sol-gel method. Rietveld profile analysis shows that the phases crystallize with tetragonal unit cell in the space group I4/mmm. The unit cell parameters a and c decrease with decreasing effective ionic radius of the lanthanide ion. The magnetic studies suggest that the ferromagnetic interactions are dominant due to $Mn^{3+}$-O-$Mn^{4+}$ and $Mn^{3+}$-O-$Cr^{3+}$ double exchange interactions. Both Weiss constant (${\theta}$) and Curie temperature ($T_C$) increase with decreasing ionic radius of lanthanide ion. It was found that the transport mechanism is dominated by Mott's variable range hopping (VRH) model with an increase of Mott localization energy.
Keywords
Sol-gel method; Rietveld refinement; Double-exchange interaction; Mott's variable range hopping model;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Moritomo, Y.; Asamitsu, A.; Kuwahara, H.; Tokura, Y.; Matsui, Y. Nature (London) 1996, 380, 141.   DOI
2 Kimura, T.; Tomioka, Y.; Kuwahara, H.; Asamitsu, A.; Tamura, M.; Tokura, Y. Science 1996, 274, 1698.   DOI   ScienceOn
3 Kimura, T.; Tokura, Y. Annu. Rev. Mater. Sci. 2000, 30, 451.   DOI   ScienceOn
4 Zener, C. Phys. Rev. 1951, 82, 403.   DOI
5 de Gennes, P. G. Phys. Rev. 1960, 118, 141.   DOI
6 Goodenough, J. B. Phys. Rev. 1955, 100, 564.   DOI
7 Millis, A. J.; Littlewood, P. B.; Shraiman, B. I. Phys. Rev. Lett. 1995, 74, 5144.   DOI   ScienceOn
8 Maignan, A.; Damay, F.; Barnabe, A.; Martin, C.; Hervieu, M.; Raveau, B. Philos. Trans. R. Soc. London Ser. B 1998, 356, 1635.   DOI   ScienceOn
9 Raveau, B.; Maignan, A.; Martin, C. J. Solid State Chem. 1997, 130, 162.   DOI   ScienceOn
10 Barnabe, A.; Maignan, A.; Hervieu, M.; Damay, F.; Martin, C.; Raveau, B. App. Phys. Lett. 1997, 71, 3907.   DOI   ScienceOn
11 Zhang, R. L.; Zhao, B. C.; Song, W. H.; Ma, Y. Q.; Yang, J.; Sheng, Z. G.; Dai, J. M. J. Appl. Phys. 2004, 96, 4965.   DOI   ScienceOn
12 Yu, G.; Xu, B.; Xiong, J.; Liu, X.; Liu, L.; Yuan, S. J. Mag. Mag. Mat. 2011, 323, 1925.   DOI   ScienceOn
13 Singh, D.; Singh, R. J. Chem. Sci. 2010, 122, 807.   DOI
14 Mahesh, R.; Mahendiran, R.; Raychaudhuri, A. K.; Rao, C. N. R. J. Solid State Chem. 1995, 114, 297.   DOI   ScienceOn
15 Hwang, H. Y.; Cheong, S. W.; Radaelli, P. G.; Marezio, M.; Batlogg, B. Phy. Rev. Lett. 1995, 75, 914.   DOI   ScienceOn
16 Maignan, A.; Simon, C.; Caignaert, V.; Raveau, B. Solid State Comm. 1995, 96, 623.   DOI   ScienceOn
17 Dhahri, A.; Dhahri, J.; Dhahri, E. J. Alloys Compds. 2010, 489, 9.   DOI   ScienceOn
18 Mazaheri, M.; Akhavan, M. J. Mag. Mag. Mat. 2010, 322, 3255.   DOI   ScienceOn
19 Larson, A. C.; Von Dreele, R. B. General Structure Analysis System (GSAS), Los Alamos National Laboratory Report LAUR 2004, 86- 748.
20 Ruddlesden, S. N.; Popper, P. Acta Cryst. 1958, 11, 54.   DOI
21 Dann, S. E.; Weller, M. T.; Curie, D. B. J. Solid State Chem. 1992, 97, 179.   DOI   ScienceOn
22 Klung, H. P.; Alexander, L. E. X-ray Diffraction Procedures: For Polycrystalline and Amorphous Materials; John Wiley and Sons Inc.: Canada, 1954.
23 Taguchi, H. J. Solid State Chem. 1997, 131, 108.   DOI   ScienceOn
24 Maignan, A.; Martin, C.; Damay, F.; Hervien, M.; Raveau, B. J. Magn. Magn. Mat. 1998, 188, 185.   DOI   ScienceOn
25 Zhang, J.; Wang, F.; Zhang, P.; Yan, Q. J. Phys.: Condens. Matter 1999, 11, 2413.   DOI   ScienceOn
26 Sharma, I. B.; Singh, D.; Magotra, S. K. J. Alloys Compds. 1998, 269, 13.   DOI   ScienceOn
27 Cullity, B. D. Elements of X-ray diffraction Reading, 2nd ed.; Addision-Wesley Publishing Co.