Results 181 to 190 of about 1,573 (211)

A study on magnetoresistivity of polycrystalline perovskite manganite films

Physics Letters A, 2001
Abstract Within the framework of effective medium theory and two-channel model, magnetoresistivity (MR) of polycrystalline perovskite manganite films are investigated. Grain boundaries are considered to result in the MR at low temperatures. Some features of recent experiments are explained qualitatively and the optimal choice of parameters to ...
Yan Ju, Zhen-Ya Li
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Local Structure in Strained Manganite thin Films

Physica Scripta, 2005
We report on a polarized x-ray absorption spectroscopy study, combining experimental measurements and ab initio calculations, of La0.7Sr0.3MnO3 films, epitaxially grown on tensile and compressive substrates. Measurements show significant modifications in the coordination shell around manganese atoms in the film plane for both substrates.
N. M. SouzaNeto, A. Y. Ramos, H. C. N. Tolentino, E. FavreNicolin, L. Ranno   +4 more
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Critical scaling and percolation in manganite films

Journal of Physics: Condensed Matter, 2001
In this work the critical behaviour of films of La0.7Ba0.3MnO3, La0.7Sr0.3MnO3, La0.7Ca0.3MnO3 and (LaMn)1-δO3 is studied. Apart from the La0.7Ca0.3MnO3 film, each of these manganite films shows a continuous phase transition with mean-field critical exponents. The analysis of the critical amplitudes indicates the formation of spin polarons.
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Local effects in strained manganite thin films

Journal of Alloys and Compounds, 2004
Abstract We report on polarized X-ray absorption spectroscopy (P-XAS) study of La 0.7 Sr 0.3 MnO 3 (LSMO) films, epitaxially grown by laser ablation on tensile (SrTiO 3 ) and compressive (LaAlO 3 ) substrates. In-plane and out-of-plane bond information was obtained by setting the angle between electric field vector and film surface close to 0 and 90°
N.M. Souza-Neto, A.Y. Ramos, H.C.N. Tolentino, E. Favre-Nicolin, L. Ranno   +4 more
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Structure and functionalities of manganite/cuprate thin film

Current Applied Physics, 2018
Abstract Bilayer thin film samples consisting of colossal magnetoresistance manganite La0.7Ca0.3MnO3 (LCMO) and superconducting cuprate YBa2Cu3O7−δ (YBCO) were stabilized by means of pulsed laser deposition techniques on single crystal SrTiO3 (001) substrate.
Manish Kumar, D.M. Phase, R.J. Choudhary, H.H. Lee   +3 more
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Epitaxial growth and strain of manganite thin films

Materials Science and Engineering: B, 1998
Thin films of La 1-x SrxMnO 3 (x = 0.4) were fabricated using pulsed laser deposition (PLD) method on various substrates for investigation of the effect of strain induced by lattice mismatch on the electro-magnetic properties. The growth conditions were optimized on SrTiO 3 substrate which has the best lattice matching (+0.9%) among the substrates ...
Y. Konishi, M. Kasai, M. Izumi, M. Kawasaki, Y. Tokura   +4 more
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Magnetic relaxation in bulk and film manganite compounds

Physical Review B, 2001
We have investigated the time dependence of the magnetic and transport properties of ${\mathrm{La}}_{0.6}{\mathrm{Sr}}_{0.4}{\mathrm{MnO}}_{3}$ films and bulk samples. A significant magnetic aftereffect has been observed in all the samples through magnetization and resistivity measurements.
M. Sirena, L. B. Steren, J. Guimpel
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Domain wall resistance in ultrathin manganite films

Journal of Applied Physics, 2001
Resistance related to magnetic domain walls in compressive-strained epitaxial manganite ultrathin films has been studied. The samples were demagnetized in different ways to induce either multidomain or single domain states. Very large difference in resistance was observed between the two states, which was attributed to the domain wall resistance.
Qi Li, Y. F. Hu, H. S. Wang
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Structure of Coherently Strained Films of Doped Manganites

physica status solidi (a), 2002
We report on the fabrication and structural characterization of coherently strained La 2/3 Ca 1/3 MnO 3 (LCMO) thin films and La 2/3 Ca 1/3 MnO 3 /La 2/3 Ba 1/3 MnO 3 (LCMO/LBMO) heterostructures on SrTiO 3 substrates. The thin films grow in a layer-by-layer mode as verified by reflection high energy electron diffraction (RHEED) and atomic force ...
J. Klein, J.B. Philipp, D. Reisinger, L. Alff, R. Gross   +4 more
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Magnetization of manganite thin films on ferroelectric substrates

Journal of Magnetism and Magnetic Materials, 2017
© 2016 Elsevier B.V.Here we report the magnetic susceptibility measurements of magnetron sputtered orthorhombic manganite RMnO3 (R=Yb, Gd) thin films deposited on dielectric LaAlO3 and ferroelectric SrTiO3, LiNbO3 substrates. We observed that all of investigated o-RMnO3 films show a splitting in the temperature dependence of ZFC and FC magnetization ...
Eremina R., Seidov Z., Ibrahimov I., Najafzade M., Aljanov M., Mamedov D., Gavrilova T., Gilmutdinov I., Chichkov V., Andreev N.   +9 more
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