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Influence of processing conditions on the thermoelectric properties of La1-xSrxCoO3 (x=0, 0.05)
(Affiliation: Department of Mechanical and Manufacturing Engineering, University of Cyprus, 75 Kallipoleos Avenue, 1678 Nicosia, CyprusCorrespondence Address: Papageorgiou, C.Department of Mechanical and Manufacturing Engineering, University of Cyprus, 75 Kallipoleos Avenue, 1678 Nicosia, Cyprus, 2012)
La1-xSrxCoO3 (x=0, 0.05) powders were prepared using the citrate-gel (Pechini) process. Pellets formed from these powders were sintered at various temperatures. All samples were characterized by means of X-Ray Diffraction ...
Experimental determination of the absolute temperature modulation in photothermal microscopy of Y1Ba2Cu3O7 crystals
(1997)
We present a technique to experimentally determine the value of the temperature perturbation ST in photothermal microscopy. Knowledge of δT is necessary for proper analysis of the differential optical reflectivity (∂R/∂T) ...
Indium oxide as a possible tunnel barrier in spintronic devices
(2005)
We report the growth of ultra-thin indium oxide layers using the dc-magnetron sputtering method. We demonstrate that good quality tunnel barriers made of indium oxide can be routinely fabricated and employed in spintronic-related ...
Ferromagnetic and antiferromagnetic interactions in lanthanum cobalt oxide at low temperatures
(2001)
Systematic dc and ac magnetic susceptibility studies have been performed on single-phase (formula presented) powder samples. Evidence is presented in support of the existence of ferromagnetic (FM1, FM2) and antiferromagnetic ...
Magneto-transport properties of NiMnSb thin films on InSb single crystals: Negative giant magnetoresistance
(2007)
In this study we investigated the magneto-transport properties of the ohmic contact between polycrystal-line NiMnSb thin films grown by pulsed laser deposition and n-type degenerate InSb (100) substrates. An unusual negative ...
Structural, magnetic, and electrical properties of NiMnSb thin films grown on InSb by pulsed-laser deposition
(2004)
We report the growth of single-phase, stoichiometric polycrystalline thin films of the half-Heusler ferromagnet NiMnSb, predicted to be half-metallic, on single crystal InSb (100) substrates heated at 200°C by pulsed laser ...
Production and identification of flux-pinning defects by electron irradiation in YBa2Cu3O7-x single crystals
(1992)
An enhancement in Jc of YBa2Cu3O7-x single crystals in a magnetic field is observed after irradiation with 1-MeV electrons. Typically, a factor-of-2 increase in Jc is deduced from magnetic hysteresis loops at 10 K and 1 T ...
Direct measurement of the anisotropy of the resistivity in the a-b plane of twin-free, single-crystal, superconducting YBa2Cu3O7-
(1990)
We have measured the resistivity tensor in one nearly twin-free crystal and one twin-free crystal of YBa2Cu3O7-. The first crystal was grown with a large twin-free region. We removed the twins in the second crystal by ...
In-plane paraconductivity in a single crystal of superconducting YBa2Cu3O7-x
(1989)
Resistivity measurements have been made in the a-b plane on a single-crystal sample of superconducting YBa2Cu3O7-x. The resistivity versus temperature curve shows a highly linear region between 150 and 240 K, with an upward ...
Impurity-induced antiferromagnetic order in the Haldane-gap compound (formula presented) (formula presented)
(2002)
An investigation of the effect of nonmagnetic Mg doping in the Haldane gap system (formula presented) is presented. Specifically, the magnetic properties of the quasi-one-dimensional compound (formula presented) (formula ...