Title :
Structure tuning and magnetotransport properties in the system (Ba2-2xSr2x)FeMoO6
Author :
Shi, J.B. ; Fan, Y.Y. ; Peng, P.H. ; Jou, F.C. ; Lee, C.Y.
Author_Institution :
Dept. of Electron. Eng., Feng Chia Univ., Taichung, Taiwan
Abstract :
The double perovskite alloy system (Ba2-2xSr2x)FeMoO6 was shown to form a solid solution throughout 0.0 ≤ x ≤ 1.0. All diffraction peaks can be identified according to a cubic lattice structure on x ≤ 0.5 and tetragonal on x > 0.5. Lattice parameters a or c decrease with increasing x. The temperature-dependent component of the resistivity was found to obey an equation of the form by ρ = ρ0 + ATn. The temperature dependence of resistivity changes from n ≅ 1 to n ≅ 2 and Kondo behavior may be observed in lower temperature (≤ 50 K).
Keywords :
Kondo effect; barium compounds; crystal structure; iron compounds; magnetoresistance; strontium compounds; (Ba2-2xSr2x)FeMoO6; Kondo behavior; cubic lattice structure; double perovskite alloy system; lattice parameters; magnetotransport properties; resistivity; solid solution; structure tuning; Coercive force; Conductivity; Giant magnetoresistance; Lattices; Magnetic properties; Scattering; Strontium; Temperature dependence; Temperature measurement; Tunneling magnetoresistance;
Conference_Titel :
Magnetics Conference, 2005. INTERMAG Asia 2005. Digests of the IEEE International
Print_ISBN :
0-7803-9009-1
DOI :
10.1109/INTMAG.2005.1464162
