Journal of the Korean Physical Society

pISSN 0374-4884 eISSN 1976-8524


J. Korean Phy. Soc. 2008; 53(9(2)): 1084-1088

Published online August 14, 2008

Copyright © The Korean Physical Society.

Double-Perovskite Sr2FeMoO6 Thin Films Prepared by Using Pulsed Laser Deposition: Growth and Crystal, Electronic and Magnetic Structures

J. H. Song, B.-G. Park, J.-H. Park and Y. H. Jeong


We grew double-perovskite ${m Sr_2FeMoO_6}$ thin films by using pulsed laser deposition (PLD) and systematically investigated the effects of the deposition temperature ($T_D$) variation on their crystal structure, electronic valence state, electrical transport, and magnetic properties. The $B$-site double-perovskite Fe/Mo ion ordering and the saturated magnetization ($M_s$) were optimized at $T_D=m 850~^circ$C while their suppressions were observed at above $m 900~^circ$C. For the samples with $T_D geq m 900 ~^circ$C, the grain structure should be included in considerations to understand the behavior of the resistivity. The valence states of the Fe and Mo ions also depended on $T_D$; mixed (singly)-valence Fe states were exhibited for the $B$-site ordered (disordered) film. These observations indicate that the $T_D$ plays a crucial role in the growth of double-perovskite ${m Sr_2FeMoO_6}$ thin films and determines their physical properties.

Keywords: Thin film, ${m Sr_2FeMoO_6}$, Ferrimagnetics