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Showing 1 to 11 of 11 for “"LaMnO3"”.
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The Gutzwiller variational method for strongly correlated systems
… in the colossal magneto-resistive compound LaMnO3. Our results for the ground-state energy of the spinless fermion model are obtained by careful enumeration of the many-body configurations of the system and calculating the Gutzwiller reduction factor to the kinetic energy for general …
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Atomic resolution studies of oxide superlattices and ultrathin films
… techniques are given in Chapter 1 and 2. In a LaMnO3-SrMnO3 superlattice, we demonstrate the interface of LaMnO3-SrMnO3 is sharper than the SrMnO3-LaMnO3 interface. Extra spectral weights in EELS are confined to the sharp interface, whereas at the rougher interface, the extra states are either …
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Nanocrystalline perovskites for catalytic combustion and oxygen separation
… in the order: Mn > Fe [approx.] Ni > Co, with LaMnO3 showing the lowest light-off temperature of 420⁰C. The intrinsic catalytic activity at 650C decreased in the order: Ni > Co > Fe > Mn. Substitution of Group IIA metals for La3+ was found to increase the reaction rate of LalxAxMnO3, while …
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Engineering Band Structures in Correlated Oxides
… of super cells consisting of N layers of LaMnO3 and N layers of SrTiO 3, N=1, 2, 3, 8, and measured their optical conductivities to probe the way in which the electronic structure depends on N. We found the valence band structure systematically changes, as N decreases, from bulk like band …
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BiMnO3 turinčių kietųjų tirpalų sintezė ir tyrimas /
… that the maximal amount of BiMnO3 in LaMnO3 structure was 65 mol%. The phase transition was observed from trigonal (when x=0.1-0.3) to cubic (when x=0.4-0.65). All BixLa1-xMnO3+δ samples demonstrated paramagnetic behavior at room temperature and magnetization depends on chemical …
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Photon-assisted spectroscopy of electronic interface states in perovskite oxide heterostructures
… the doping type of di- and tetravalent-ion-doped LaMnO3. The question whether the insulating parent compound LaMnO3 becomes an electron-doped semiconductor after doping with tetravalent cations such as Ce4+ - which would be in analogy to the well-established hole doping after partial substitution …
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All-electron GW calculations for perovskite transition metal oxides
… for the three band insulators LaCrO3, LaMnO3, and LaFeO3 are carried out. Results from DFT calculations employing the generalized-gradient approximation with the PBE functional or results obtained from calculations using the hybrid-functional HSE are used as starting point to apply …
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Heteroepitaxial Interfaces Modify Collective States in Complex Oxides
… exchange interaction. By constructing DSLs with LaMnO3, SrMnO3 and CaMnO3, electronic properties in ordered pseudo alloys having average doping, x=⅓ was compared with random alloy La⅔Sr⅓MnO3 samples. Effects due to strain disorder and charge disorder/localization was discussed. Magnetic order of …
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Li₂0₂ in Li-0₂ batteries : catalytic enhancement of electrochemical oxidation and thermophysical transformations
… LaCrO 3, Bao.5Sro.5Coo.8Feo.20 3 (BSCF), LaNiO3, LaMnO3+8, and LaFeO3 was systematically investigated. It was found that LaCrO3, reported with the lowest activity in aqueous OER, shows a threefold higher activity compared to BSCF, reported with two orders of magnitude higher activity in aqueous …
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Development of REBCO Tapes on Non-Metallic Flexible Substrates for RF Applications
… YSZ substrates. Homo-epitaxial MgO and epitaxial LaMnO3 (LMO) thin films were deposited via reel-to-reel medium-frequency magnetron sputtering and radio-frequency magnetron sputtering, respectively. The out-of-plane and in-plane texture of homo-epitaxial MgO were optimized to 2° …
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Development and Scaling up of Oxide Buffer Architectures on Flexible Substrates for Efficient and Application-Derived Growth of REBCO Thin Films
… the IBAD process. Subsequently, Homo-epi MgO and LaMnO3 were optimized using reactive mid- and radio frequency (RF) magnetron sputtering to achieve strictly (00l) growth and good out-of-plane and in-plane textures. Moreover, 13 double-sided tapes were manufactured, with an average out-of-plane …