Invited review “sol-gel” preparation of high temperature superconducting oxides

M Kakihana - Journal of sol-gel science and technology, 1996 - Springer
This review article focuses on the sol-gel preparation of high temperature superconducting
oxides wherein different classes of gel technologies were utilized. These involve: 1) the sol …

Improvement of thermoelectric properties of Ca3Co4O9 using soft chemistry synthetic methods

A Sotelo, G Constantinescu, S Rasekh… - Journal of the European …, 2012 - Elsevier
Two solution synthetic methods, sol–gel and a polymeric route, have been studied in order
to obtain Ca3Co4O9 misfit compounds with improved thermoelectric properties, compared …

Solution-based synthesis routes to thermoelectric Bi2Ca2Co1. 7Ox

A Sotelo, S Rasekh, MA Madre, E Guilmeau… - Journal of the European …, 2011 - Elsevier
Abstract The synthesis of Bi 2 Ca 2 Co 1.7 O x misfit compounds by different processing
routes, ie classical solid-state, and two solution methods namely sol–gel via nitrates and a …

Improvement of superconducting properties in Na-doped BSCCO superconductor

B Özçelik, M Gürsul, A Sotelo, MA Madre - Journal of Materials Science …, 2015 - Springer
In this study, the effect of Na substitution on the structural, electrical and magnetic properties
of Bi 2 Sr 2 Ca 1− x Na x Cu 2 O 8+ y superconductor with x= 0.0, 0.05, 0.075, 0.1, 0.15, and …

Relationship between annealing time and magnetic properties in Bi-2212 textured composites

B Özçelik, B Özkurt, ME Yakıncı, A Sotelo… - … of superconductivity and …, 2013 - Springer
In this study, we report the physical and magnetic properties of Bi 2 Sr 2 CaCu 2 O x textured
materials prepared by a LFZ melting technique and annealed for different times (60, 72, 96 …

Effect of Ce Substitution on the Magnetoresistivity and Flux Pinning Energy of the Bi2Sr2Ca1−x Ce x Cu2O8+δ  …

B Özçelik, C Kaya, H Gündoğmuş, A Sotelo… - Journal of Low …, 2014 - Springer
In this study, the effect of Ce doping on the properties of Bi 2 Sr 2 Ca 1− x Ce x Cu 2 O 8+ δ
ceramic superconductors, with x= 0.0, 0.01, 0.05, 0.1, and 0.25, has been investigated …

The effects of the post-annealing time on the growth mechanism of Bi2Sr2Ca1Cu2O8+∂ thin films produced on MgO (100) single crystal substrates by pulsed laser …

O Nane, B Özçelik, D Abukay - Ceramics International, 2016 - Elsevier
Abstract Bi 2 Sr 2 Ca 1 Cu 2 O 8+∂ thin films were deposited on MgO (100) substrates by
pulsed laser deposition (PLD). The effects of post-annealing time on the phase formation …

Precursor influence on the electrical properties of textured Bi-2212 superconductors

A Sotelo, S Rasekh, MA Madre, JC Diez - Journal of superconductivity and …, 2011 - Springer
Several synthetic methods, solid-state, sol-gel and polymer solution methods, have been
used to prepare prereacted precursors, as well as a vitreous material obtained by melt …

Structural, electrical, and magnetic properties of the Co-substituted Bi-2212 system textured by laser floating zone technique

A Özaslan, B Özçelik, B Özkurt, A Sotelo… - … of Superconductivity and …, 2014 - Springer
Abstract In this work, Bi 2 Sr 2 CaCu 2− x Co x O y (x= 0.0, 0.05, 0.10, and 0.25) textured
superconductors were prepared by a LFZ melting technique. In all cases, the powder X-ray …

Optimization of calcination conditions on the Bi-2223 kinetic formation and grain size

V Garnier, I Monot, G Desgardin - Superconductor Science and …, 2000 - iopscience.iop.org
The effects of the calcination conditions (time, temperature, intermediate milling) on the
kinetics of formation of Bi-2223 and on the grain size were studied using a powder precursor …