scholarly journals Anomalies in the elastic properties of the high‐temperature superconductors

1988 ◽  
Vol 84 (S1) ◽  
pp. S110-S111
Author(s):  
D. P. Almond ◽  
G. A. Saunders ◽  
E. F. Lambson ◽  
A. Al‐Kheffaji ◽  
M. Cankartaran
Keyword(s):  
High Temperature ◽  
Elastic Properties ◽  
High Temperature Superconductors

Elastic Properties of High Temperature Superconductors Derived from High Pressure Experiments

1991 ◽  
pp. 433-455 ◽  
Author(s):  
W. H. Fietz ◽  
H. A. Ludwig ◽  
B. P. Wagner ◽  
K. Grube ◽  
R. Benischke ◽  
...  
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Elastic Properties ◽  
High Temperature Superconductors

scholarly journals Elastic Properties of La2-xSrxCuO4 (x=0.10-0.20)

2010 ◽  
Vol 2 (2) ◽  
pp. 294-301 ◽  
Author(s):  
S. Gupta ◽  
D. S. Tomar ◽  
S. C. Goyal
Keyword(s):  
High Temperature ◽  
Bulk Modulus ◽  
Debye Temperature ◽  
Elastic Properties ◽  
High Temperature Superconductors ◽  
Empirical Relation ◽  
Elastic Wave Velocity ◽  
The Difference ◽  
Two Phases ◽  
Good Agreement

The expressions for elastic constant for high temperature superconductors, derived using Mie-Grüneisen interaction potential, are used to analyze the elastic properties (bulk modulus, elastic wave velocity)  of La2-xSrxCuO4 for x = 0.10 to 0.20. The Debye temperature θD has also been computed which is found to decrease with increasing Sr concentration. The value of bulk modulus in superconducting phase (Ks) is larger than the value in its normal phase (Kn=113.8 GPa) for x = 0.10 to 0.14. After this limit Ks decreases.  A simple empirical relation between the difference in bulk moduli in the two phases (superconducting and normal) and Tc is proposed. The value of Tc for  La1.85Sr0.15CuO4 obtained from the proposed relationship is in good agreement with the experimental value. Keywords: Phase transition temperature; Debye temperature; High-temperature superconductor. © 2010 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245 (Online). All rights reserved.  DOI: 10.3329/jsr.v2i2.2513                J. Sci. Res. 2 (2), 294-301 (2010) 

Mechanical behavior of MgO-whisker reinforced (Bi, Pb)2Sr2Ca2Cu3Oy high-temperature superconducting composite

1996 ◽  
Vol 11 (7) ◽  
pp. 1645-1652 ◽  
Author(s):  
Y. S. Yuan ◽  
M. S. Wong ◽  
S. S. Wang
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Solid State ◽  
Mechanical Behavior ◽  
Elastic Properties ◽  
High Temperature Superconductors ◽  
Processing Method ◽  
Superconducting Properties ◽  
First Time ◽  
State Processing

The inherently weak mechanical properties of bulk monolithic high-temperature superconductors (HTS) have been a concern. Properly selected reinforcements in fiber and whisker forms have been introduced to the HTS ceramics to improve their mechanical properties. In this paper, mechanical behavior of a MgO-whisker reinforced Pb-doped Bi-2223 (BPSCCO) HTS composite fabricated by a solid-state processing method is studied. The (MgO)w/BPSCCO HTS composite has been shown to exhibit excellent superconducting properties. Elastic properties, strengths, and notched fracture toughnesses of both the monolithic BPSCCO and the (MgO)w/BPSCCO HTS composite are investigated. Detailed mechanical properties are reported for the first time for the (MgO)w/BPSCCO HTS composite. Mechanisms of strengthening and toughening in the MgO-whisker-reinforced HTS composite are also discussed.

A study by GC-MS of the decomposition of precursors for the MOCVD of high temperature superconductors

2002 ◽  
Vol 12 (4) ◽  
pp. 85-92
Author(s):  
O. V. Lopaeva ◽  
M. L. Hitchman ◽  
S. H. Shamlian ◽  
D. R. Watson
Keyword(s):  
High Temperature ◽  
High Temperature Superconductors
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