نتایج جستجو برای: sr doped laalo3

تعداد نتایج: 75789  

Journal: :Journal of the Japan Society of Powder and Powder Metallurgy 2002

2014
Astrid Marchewka David Cooper Christian Lenser Stephan Menzel Hongchu Du Regina Dittmann Rafal E. Dunin-Borkowski Rainer Waser

We determined the electrostatic potential distribution in pristine Pt/Fe:SrTiO3/Nb:SrTiO3 structures by electron holography experiments, revealing the existence of a depletion layer extending into the Nb-doped bottom electrode. Simulations of potential profiles in metal-insulator-metal structures were conducted assuming different types and distributions of dopants. It is found that the presence...

2013
Rashid Mahmood Muhammad Javed Iqbal

A series of bismuth based superconducting materials doped with galliumBi Pb Sr Ca Cu Ga O 1.7 0.4 2 2 3-x x y (x = 0.0, 0.02, 0.04, 0.06, 0.08 and 0.10) was synthesized by Simple solid-state reaction method. The samples were characterized by X-ray diffraction, EDX analysis and electrical resistivity and ac magnetic susceptibility measurements. All the samples consist of both low-T (2212) and Hi...

2016
Hongpeng He Yingyi Huang Juleiga Regal Marta Boaro John M. Vohs Raymond J. Gorte

Composites of yttria-stabilized zirconia (YSZ) with Sr-doped LaCrO3 (LSC) and Sr-doped LaMnO3 (LSM) were prepared by impregnation of a porous YSZ matrix with aqueous solutions of the appropriate metal salts, followed by sintering to various temperatures. XRD measurements showed that perovskite phases formed after sintering at 1073 K, a temperature well below that at which solid-state reactions ...

2015
Junfeng He H. Hafiz Thomas R. Mion T. Hogan C. Dhital X. Chen Qisen Lin M. Hashimoto D. H. Lu Y. Zhang R. S. Markiewicz A. Bansil S. D. Wilson Rui-Hua He

We report on an angle resolved photoemission (ARPES) study of bulk electron-doped perovskite iridate, (Sr(1-x)La(x))3Ir2O7. Fermi surface pockets are observed with a total electron count in keeping with that expected from La substitution. Depending on the energy and polarization of the incident photons, these pockets show up in the form of disconnected "Fermi arcs", reminiscent of those reporte...

2008
You-Cheng Li Shengjie Dong D. I. Khomskii

We performed electron spin and nuclear magnetic resonance and inelastic neutron scattering measurements of a single crystal of lightly hole-doped La1−xSrxCoO3, x ∼ 0.002 in order to establish the origin of a surprisingly strong magnetization due to a very small Sr doping. The data provide experimental evidence for the creation at low temperatures of extended spin clusters with a large spin mult...

Journal: :Physical review letters 2015
A de la Torre S McKeown Walker F Y Bruno S Riccó Z Wang I Gutierrez Lezama G Scheerer G Giriat D Jaccard C Berthod T K Kim M Hoesch E C Hunter R S Perry A Tamai F Baumberger

We report angle resolved photoemission experiments on the electron doped Heisenberg antiferromagnet (Sr(1-x)La(x))(2)IrO(4). For a doping level of x=0.05, we find an unusual metallic state with coherent nodal excitations and an antinodal pseudogap bearing strong similarities with underdoped cuprates. This state emerges from a rapid collapse of the Mott gap with doping resulting in a large under...

Journal: :Optics letters 1993
A Kewitsch M Segev A Yariv R Neurgaonkar

We demonstrate selective fixing of volume holograms in photorefractive media. Each holographic page may be fixed individually and overwritten without destroying the other fixed pages. We present experimental results describing this process in Cr-doped Sr(0.75)Ba(0.25)Nb(2)O(6) at room temperature, with hologram lifetimes exceeding 100 days during continuous readout with an intense beam (1 W/cm(...

2009
Sangtae Kim

ABSTRACT In this paper I summarize our recent investigations (Park and Kim, Phys Chem C 111:14903, 2007; Solid State Ionics 179:1329, 2008) on the origin of the grain-boundary resistance in a doped LaGaO3, a perovskite-structured solid electrolyte. The partial electronic and ionic resistances of the bulk and the grain boundaries, as well as the total resistance, in 1 mol% Sr-doped LaGaO3 were m...

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