Magnetic Structure of La_0.54Ho_0.11Sr_0.35Mn_1-XCu_xO₃ Manganites

Abstract:

New La0.54Ho0.11Sr0.35Mn1-xCuxO3 manganites were obtained by sol-gel method using oxides and acetates and sintered finally in air at 12000 C for 15 h. The samples were studied by X-ray diffraction, magnetic and electric methods. Space group, lattice constants, average size of the crystalline blocks and positions of cations/anions in the unit cell, were determined using the FullProf code. The samples contain only a perovskite phase with an orthorhombic structure (Pnma space group). Small-angle neutron scattering (SANS) measurements were performed on the SANS-1 setup at the FRG-1 reactor of the GKSS Research Centre (Geesthacht, Germany). The sizes of magnetic clusters have been determined at room temperature.

• Periodical: Solid State Phenomena (Volume 190)
• Pages: 121-124
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.190.121
• Online since: June 2012
• Authors: M.L. Craus, E. Anitas, N. Cornei, A. Islamov, V. Garamus
• Keywords: Crystal/Magnetic Structure, Manganite, Small-Angle Neutron Scattering, Transport Properties

References

[1] C. Zener, Phys. Rev. 82 (1951) 403.

[2] P. -G. De Gennes, Phys. Rev. 118 (1960) 141.

[3] N.D. Mathur, P.B. Littlewood, Solid State Commun. 119 (2001) 271.

[4] P. Raychaudhury, T.K. Nath, P. Sinhaz, C. Mitra, A.K. Nigam, S.K. Dhar, R. Pinto, J. Phys.: Condens. Matter 9 (1997) 10919.

[5] A. Dubroka, J. Humlíček, M.V. Abrashev, Phys. Rev. B 73 (2006) 224401.

[6] M. -L. Craus, N. Cornei, I. Berdan, C. Mita, M.N. Palamaru, Ceramics Intern. 30 (2004) 447.

DOI: 10.1016/s0272-8842(03)00130-5

[7] S. Asthana, A.K. Nigam, D. Bahadur, Phys. Stat. Solidi (b) 243 (2006) (1922).

[8] D.I. Svergun, J. Appl. Cryst. 24 (1991) 485.

[9] F.L. Tang, X. Zhang, Y. Shao, J. Phys.: Condens. Matter 18 (2006) 5579.

[10] T. Shibata, B. Bunker, J. F. Mitchell, P. Schiffer, Phys. Rev. Lett. 88 (2002) 207205.

[11] D. I. Svergun, Biophys. J. 76 (1999) 2879.