Thin films of Sr2CrReO6 have been reported to be metallic (possibly half-metallic) with a high Curie temperature (635K), which makes this material a feasible candidate for spintronic applications. However innate p-type conductivity has been observed in Sr2CrReO6 thin films. In order to explain this activity, investigations of the structural and electrical properties of phase-pure off-stoichiometric Sr2+qCrReO6 (q = -0.07 & 0.05), Sr2CrxRe2-xO6 (x = 0.90, 0.95, 1.05, & 1.10), and A-site substituted Sr2-yAyCrReO6 (A = K, Ca, & La; y = 0.05, 0.10, 0.20) samples have been achieved. All studied compounds exhibit a near linear trend in the pseudocubic lattice parameters and ordering. Resistivity and magnetic properties will be discussed in detail. Determining the bulk properties of these compounds may help gain understandings of the electrical properties observed in thin films of Sr2CrReO6 and may lay the ground work for future directions in growing thin films of this material.

Investigating the structural, electrical, and magnetic properties for A-site substituted and off-stoichiometric Sr2CrReO6 double perovskites

244th National Meeting (2012)

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