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Electrical and Magnetic Properties of {\rm Sr}({\rm Ru},{\rm Cr}){\rm O}_{3} Thin Films

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3 Author(s)
Ramana, E.V. ; Dept. of Phys., Hankuk Univ. of Foreign Studies, Yongin, South Korea ; Hong Woo Park ; Jung, C.U.

Cr-doped SrRuO3 (SRCO) thin films were grown on an SrTiO3 (STO) (001) substrate using a pulsed laser deposition method in order to study the effects of the Cr doping. Measurements of the out-of-plane lattice constant and the electrical and magnetic properties indicate that Cr is incorporated into the B-site of the SRO lattice. Magnetic hysteresis measurements reveal a ferromagnetic nature with a saturation magnetization of about 0.75 ¿B/Ru. The magnetization measurement of Sr(Ru0.9Cr0.1)O3 showed a ferromagnetic transition temperature T C = 165 K. This T C value is about 13 K higher than that reported for SrRuO3 thin films. The T C enhancement due to Cr doping in SrRuO3 thin film was less than that observed for the bulk sample. Electrical resistivity measurements of the SRCO thin films reveal metallic behavior, with a much larger residual resistivity of ~260 ¿¿ cm compared to 26 ¿¿ cm for SrRuO3 thin films.

Published in:

Magnetics, IEEE Transactions on  (Volume:46 ,  Issue: 6 )

Date of Publication:

June 2010

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