Synthesis of Hg2Sr2-xBaxCa2Cu3O10 Superconductor and Study the Structure and Electrical Properties

2020 ◽  
Vol 1002 ◽  
pp. 230-238
Author(s):  
Shahir Fleyeh Nawaf ◽  
Nihad Ali Shafeek ◽  
Mohamed Hasan Darweesh
Keyword(s):  
Molecular Weight ◽  
Electrical Resistivity ◽  
High Temperature ◽  
Solid State ◽  
Electrical Properties ◽  
High Temperature Superconductor ◽  
Pure Material ◽  
Best Value ◽  
Compensation Rate ◽  
Structure Properties

Compound Hg2Sr2-xBaxCa2Cu3O10 high temperature superconductor looks like (HTSC) has been prepared as a pellet by two step solid state reaction with a certain substitution percentages (0.5, 1,1.5,2) of Ba compensation rate of Sr respectively using appropriate weight of pure material Hg2O3, Sr(NO3)2, Ba(NO3)2, CaCO3, and Cu(NO3)2 proportional to their molecular weight. XRD used for study structure properties, a computer program was used to calculation of spike dimensions the lattice parameters a, b and c shows Tetragonal, Electrical resistivity at x= 1.5 of Ba are obtained when the best value of Tc= 142 K.

HIGH PRESSURE ELECTRICAL RESISTIVITY OF COMPOSITION CONTROLLED Nd-123 BASED BULK MATERIAL

2004 ◽  
Vol 18 (01) ◽  
pp. 27-33 ◽  
Author(s):  
R. SELVA VENNILA ◽  
S. REZA GHORBANI ◽  
Ö. RAPP ◽  
N. VICTOR JAYA
Keyword(s):  
High Pressure ◽  
Electrical Resistivity ◽  
High Temperature ◽  
Solid State ◽  
Solid State Reaction ◽  
High Temperature Superconductor ◽  
Bulk Material ◽  
Solid State Reaction Method ◽  
Reaction Method ◽  
Electrical Resistivity Study

High pressure electrical resistivity studies were carried out on the high temperature superconductor Nd 1-x Ca x Ba 2 Cu 3 O 7-δ for various calcium concentrations x=0.00, 0.03, 0.06 and 0.10 obtained by the solid-state reaction method. The electrical resistivity study was performed using the four-probe technique with a Bridgman opposed anvil device. All four samples show an initial drastic fall in electrical resistivity up to a pressure of around 3 GPa that remains almost constant up to 8 GPa.

High-temperature superconductor, YBa2Cu307-x as all- solid-state lithium cell

1992 ◽  
Vol 40 (3) ◽  
pp. 361-363
Author(s):  
Li Feng ◽  
Yongyao Xia ◽  
Zuotao Zeng ◽  
Baochen Wang
Keyword(s):  
High Temperature ◽  
Solid State ◽  
High Temperature Superconductor ◽  
Lithium Cell

Enhanced electrical properties of (Li,Ce) co-doped Sr(Na0.5Bi0.5)Bi4Ti5O18 high temperature piezoceramics

RSC Advances ◽  
2016 ◽  
Vol 6 (40) ◽  
pp. 33387-33392 ◽  
Author(s):  
Zhongran Yao ◽  
Ruiqing Chu ◽  
Zhijun Xu ◽  
Jigong Hao ◽  
Guorong Li
Keyword(s):  
High Temperature ◽  
Solid State ◽  
Electrical Properties ◽  
Solid State Reaction ◽  
Piezoelectric Ceramics ◽  
Solid State Reaction Method ◽  
Lead Free ◽  
Conventional Solid State Reaction ◽  
Reaction Method ◽  
Co Doped

Lead-free piezoelectric ceramics with the formula of Sr1−x(Li,Ce)x/2(Na0.5Bi0.5)Bi4Ti5O18 (LCSNBT-x, x = 0.0, 0.1, 0.2, 0.3, 0.4), were prepared by a conventional solid-state reaction method.

Thermal stability and enhanced electrical properties of Er3+-modified Na0.5Bi4.5Ti4O15 lead-free piezoelectric ceramics

RSC Advances ◽  
2016 ◽  
Vol 6 (97) ◽  
pp. 94870-94875 ◽  
Author(s):  
Zhongran Yao ◽  
Ruiqing Chu ◽  
Zhijun Xu ◽  
Jigong Hao ◽  
Wei Li ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Electrical Resistivity ◽  
Solid State ◽  
Electrical Properties ◽  
Solid State Reaction ◽  
Piezoelectric Ceramics ◽  
Lead Free ◽  
Reaction Route ◽  
High Electrical Resistivity ◽  
Solid State Reaction Route

Na0.5Bi4.5−xErxTi4O15 (NBET-x, x = 0, 0.006, 0.012, 0.018, 0.025) lead-free piezoelectric ceramics, with high electrical resistivity were prepared by a solid-state reaction route.

The wavevector substar group in reciprocal space and its representation

2017 ◽  
Vol 73 (5) ◽  
pp. 403-413
Author(s):  
Il Hwan Kim ◽  
Jong Ok Pak ◽  
Il Hun Kim ◽  
Song Won Kim ◽  
Lin Li
Keyword(s):  
Phase Transition ◽  
High Temperature ◽  
Solid State ◽  
Symmetry Breaking ◽  
High Temperature Superconductor ◽  
Landau Theory ◽  
Translational Symmetry ◽  
Mathematical Tool ◽  
Symmetry Breaking Phenomena ◽  
Powerful Mathematical Tool

A new concept of the wavevector substar group is established which, in the study of translational symmetry breaking of a crystal, only considers the particular arms of the wavevector star taking part in the phase transition; this is in contrast with the traditional Landau theory which considers all of the arms of the wavevector star. It is shown that this new concept can be used effectively to investigate the interesting physical properties of crystals associated with translational symmetry breaking. It is shown that studies on complicated phase transitions related to reducible representations, such as those in perovskite KMnF3multiferroics and the high-temperature superconductor La2/3Mg1/2W1/2O3(La4Mg3W3O18), are much simplified by the new concept. The theory of the wavevector substar group and its representation is a powerful mathematical tool for the study of various symmetry-breaking phenomena in solid-state crystals.

VARIATION OF Tc IN SINGLE PHASE Bi4Sr3Ca3Cu4O16−x SYSTEM

1990 ◽  
Vol 04 (22) ◽  
pp. 1385-1391 ◽  
Author(s):  
M. NASIR KHAN ◽  
FARID A. KHWAJA
Keyword(s):  
High Temperature ◽  
Critical Temperature ◽  
Solid State ◽  
Single Phase ◽  
High Temperature Superconductor ◽  
Interlayer Spacing ◽  
Nominal Composition ◽  
X Ray Diffraction ◽  
Electrical Measurements ◽  
X Ray

The variation of critical temperature Tc in a single-phased ceramic high temperature superconductor Bi 4 Sr 3 Ca 3 Cu 4 O y is studied using techniques like X-ray diffraction, magnetic and electrical measurements. Samples of Bi-Sr-Ca-CuO having nominal composition 4334 are synthesized by solid state reaction using appropriate amounts of Bi 2O3, SrCO 3, CaCO 3 and CuO powders. It has been shown that the Tc in this material can be raised from 98 K in the fast quenched sample to 120 K in the furnace-cooled one. The higher values of Tc in furnace cooled specimens as compared with the Tc in quenched samples have been attributed to the variation in the interlayer spacing in these compounds. It is concluded that electron density and hence the attractive interaction between pairs are increased due to shortening of the interlayer spacing in the furnace-cooled sample, leading to an increase of its Tc.

Sintering and Microstructure - Property Relations for YBa2Cu3Ox

1987 ◽  
Vol 99 ◽  
Author(s):  
R. K. Bordia ◽  
H. S. Horowitz ◽  
M. A. Subramanian ◽  
J. B. Michel ◽  
E. M. McCarron ◽  
...  
Keyword(s):  
High Temperature ◽  
Solid State ◽  
Electrical Properties ◽  
High Temperature Superconductivity ◽  
Microstructural Characterization ◽  
Densification Behavior ◽  
Property Relations ◽  
Synthesis Routes ◽  
Intense Activity ◽  
Solution Routes

The recent discovery of high temperature superconductivity in YBa2Cu3O7 has led to intense activity in the processing of these oxides. The earliest attempts to synthesize these materials were based on solid state routes. These routes do not produce highly sinterable powders. Solution routes can potentially produce much more sinterable powders. We have investigated several synthesis routes - both solid state and solution. The details of these will be presented elsewhere(1). Here, we contrast the physical properties and the densification behavior of powders made via solid state and solution routes. We also present preliminary results on the microstructural characterization and electrical properties of the sintered samples.

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