Highly aligned, spin polarized thin films of Sr[sub 2]FeMoO[sub 6] by a chemical vapor process

Rager, J.; Berenov, A. V.; Cohen, L. F.; Branford, W. R.; Bugoslavsky, Y. V.; Miyoshi, Y.; Ardakani, M.; MacManus-Driscoll, J. L.
December 2002
Applied Physics Letters;12/23/2002, Vol. 81 Issue 26, p5003
Academic Journal
Highly oriented films of Sr[sub 2]FeMoO[sub 6] were fabricated by ultrasonic spray pyrolysis. A combined organic/inorganic solution was developed and the films were deposited on single-crystal LaA1O[sub 3] between 600°C and 900°C followed by postannealing at 850°C or 1200°C in Ar/5% H[sub 2]. Optimum films showed a metallic resistivity behavior with less than a 0.25% magnetoresistive effect at 50 K, 1 T, indicative of highly quality intra- and intergranular material. At 4.2 K, the lower bound saturation magnetization, M[sub s] was ∼2.5 μ[sub B]/f.u. and the transport spin polarization was 60 ± 3%.


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