Journal ArticleDOI
Thin films of double perovskite Sr2FeMoO6: Growth, optimization, and study of the physical and magnetotransport properties of films grown on single-crystalline and polycrystalline SrTiO3 substrates
S. R. Shinde,S. B. Ogale,R. L. Greene,T. Venkatesan,Ken Tsoi,Sang-Wook Cheong,Andrew J. Millis +6 more
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TLDR
In this paper, thin films of double perovskite were obtained by applying pulsed laser deposition on polycrystalline and polycrystaline SrTiO3 substrates, and the results showed that the low-field magnetoresistance (low-field MR) is accompanied by nonlinearity in the current voltage characteristics.Abstract:
Thin films of Sr2FeMoO6 have been deposited on single-crystalline and polycrystalline SrTiO3 substrates by pulsed laser deposition from a stoichiometric target. In order to obtain high-quality films, the deposition parameters were systematically optimized. The films grown under optimized conditions show properties comparable to those of bulk Sr2FeMoO6 single crystals. Surprisingly, polycrystalline films obtained by depositing on polycrystalline SrTiO3 substrates do not show any significant low-field magnetoresistance (MR), contrary to expectations for a spin-polarized material. However, after controlled annealing-induced alteration of the grain-boundary properties, a development of the low-field MR feature is clearly observed. The occurrence of the low-field MR is accompanied by nonlinearity in the current-voltage characteristics. These results are analyzed in the light of the prevalent understanding of the properties of this double perovskite material.read more
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Journal ArticleDOI
Low field magnetotransport in manganites
TL;DR: This review consists of an overview of grain-boundary-induced low field magnetotransport behavior and prospects for possible applications of CMR manganites.
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Low Field Magnetotransport in Manganites
TL;DR: The perovskite manganites of general formula RE_1-xAe_xMnO_3 (RE= rare earth,AE=Ca, Sr, Ba and Pb) have drawn considerable attention, especially following the discovery of colossal magnetoresistance (CMR) as mentioned in this paper.
Journal ArticleDOI
Unlocking the potential of half-metallic Sr 2 FeMoO 6 films through controlled stoichiometry and double-perovskite ordering
Adam J. Hauser,Robert E.A. Williams,Rebecca A. Ricciardo,Arda Genc,M. Dixit,J. M. Lucy,Patrick M. Woodward,Hamish L. Fraser,Fengyuan Yang +8 more
TL;DR: In this article, phase purity, phase purity and double perovskite ordering were identified and controlled to complicate the growth of phase pure, fully epitaxial phase-pure films.
Journal ArticleDOI
Structural, magnetic, and transport properties of high-quality epitaxial Sr2FeMoO6 thin films prepared by pulsed laser deposition
TL;DR: In this article, the effect of various deposition conditions, on both substrate-induced strain and antisite disorder (ASD), which translate into a variety of magnetic and transport properties of the films were studied.
Journal ArticleDOI
Effects of strain relaxation on the electronic properties of epitaxial Sr2FeMoO6 grown by pulsed laser deposition on SrTiO3 (001)
TL;DR: In this paper, the in-plane and out-of-plane SFMO lattice parameters were determined for different thicknesses, from 13 to 600 nm, and it was shown that SFMO is half metallic only for thicknesses above 44 nm.
References
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Journal ArticleDOI
Continuous excitation of planetary free oscillations by atmospheric disturbances
TL;DR: In this article, it was shown that the atmosphere of solid planets is capable of exerting dynamic pressure on their surfaces, thereby exciting free oscillations with amplitudes large enough to be detected by modern broad-band seismographs.
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Magnetic and electronic properties of a single crystal of ordered double perovskite Sr 2 FeMoO 6
TL;DR: In this paper, a single crystal of ordered double perovskite oxide with a conducting ferromagnet has been prepared by the floating zone method, and the magnetic and electronic properties have been investigated.
Journal ArticleDOI
Octahedral cation site disorder effects on magnetization in double-perovskite Sr2FeMoO6: Monte Carlo simulation study
TL;DR: In this article, Monte Carlo simulation studies are performed to examine the implications of octahedral cation (Fe, Mo) site disorder for magnetization in the double-perovskite Sr2FeMoO6.
Journal ArticleDOI
Finding universal correlations between cationic disorder and low field magnetoresistance in FeMo double perovskite series.
Mar García-Hernández,José Luis Martínez,María Jesús Martínez-Lope,M. T. Casais,José Antonio Alonso +4 more
TL;DR: The presence of a moderate level of antisite disorder is at the very root of low field magnetoresistance although effects such as disorder distribution, connectivity, or morphology add their contribution.
Journal ArticleDOI
Structural phase transition and the electronic and magnetic properties of Sr 2 FeMoO 6
Omar Chmaissem,Omar Chmaissem,R. Kruk,Bogdan Dabrowski,Bogdan Dabrowski,Dennis E. Brown,Dennis E. Brown,X. Xiong,X. Xiong,Stanislaw Kolesnik,James D. Jorgensen,C. W. Kimball +11 more
TL;DR: In this paper, the nuclear and magnetic structures of octahedra were investigated using neutron powder diffraction and M\"ossbauer spectroscopy at temperatures between 10 and 460 K. Fe and Mo atoms were found to order on alternate sites, as expected, giving rise to a double perovskite type unit cell.