High-temperature order-disorder phase transition in the superconductorY1Ba2Cu3O6+δobserved by electrical resistivity measurements

1987 ◽  
Vol 36 (10) ◽  
pp. 5723-5726 ◽  
Author(s):  
P. P. Freitas ◽  
T. S. Plaskett
Keyword(s):  
Phase Transition ◽  
Electrical Resistivity ◽  
High Temperature ◽  
Disorder Phase Transition ◽  
Resistivity Measurements

scholarly journals Cooper Pair-Like Systems at High Temperature and their Role on Fluctuations Near the Critical Temperature

1998 ◽  
Vol 12 (29n31) ◽  
pp. 3216-3219 ◽  
Author(s):  
M. Ausloos ◽  
S. Dorbolo
Keyword(s):  
Phase Transition ◽  
Electrical Resistivity ◽  
High Temperature ◽  
Critical Temperature ◽  
Oxygen Diffusion ◽  
Cooper Pair ◽  
Anomalous Behavior ◽  
Anomalous Effect ◽  
Linear Temperature ◽  
Ybco Sample

A logarithmic behavior is hidden in the linear temperature regime of the electrical resistivity R(T) of some YBCO sample below 2T c where "pairs" break apart, fluctuations occur and "a gap is opening". An anomalous effect also occurs near 200 K in the normal state Hall coefficient. In a simulation of oxygen diffusion in planar 123 YBCO, an anomalous behavior is found in the oxygen-vacancy motion near such a temperature. We claim that the behavior of the specific heat above and near the critical temperature should be reexamined in order to show the influence and implications of fluctuations and dimensionality on the nature of the phase transition and on the true onset temperature.

Electrical Resistivity Measurements of Manganite La0.95Sr0.05MnO3 Under Uniaxial Pressure at High Temperature

2018 ◽  
Vol 32 (8) ◽  
pp. 2467-2469
Author(s):  
S. Muruganantham ◽  
S. Kumararaman ◽  
N. R. Tamilselvan ◽  
T. Thaila ◽  
K. Subbaraman
Keyword(s):  
Electrical Resistivity ◽  
High Temperature ◽  
Uniaxial Pressure ◽  
Resistivity Measurements

YBa2Cu3O7–x:Transport Properties and Defects at High Temperature

1989 ◽  
Vol 44 (12) ◽  
pp. 1167-1171 ◽  
Author(s):  
G. Chiodelli ◽  
G. Campari-Viganò ◽  
G. Flor
Keyword(s):  
Electrical Resistivity ◽  
High Temperature ◽  
Tetragonal Phase ◽  
Orthorhombic Phase ◽  
Ion Migration ◽  
Resistivity Measurements ◽  
Oxygen Ion ◽  
Partial Pressures ◽  
Oxygen Ion Migration ◽  
The One

Abstract Electrical resistivity measurements were carried out on polycrystalline YBa2Cu3O7-x at temperatures 300 < T < 1023 K and oxygen partial pressures 5 ·10-7 ≤ po2 ≤ 1 atm. The samples, equilibrated in the range from 5 ·10-4 to 1 atm, show metallic behaviour, the one equilibrated at po2 = 2 ·10-5 shows a transition between metallic and semiconducting behaviour at 920 K, and that equilibrated at po2 = 5 ·10-7 shows semiconducting behaviour: for the latter the relevant resistivity is due to the oxygen-ion migration. The isotherms log σ vs. log po2 (in the temperature range from 723 to 1023 K) show slopes of about 1/6 at 723 K (orthorhombic phase) and about 1/2 at 1023 K (tetragonal phase). These results are discussed in terms of appropriate defect models.

Correlation between thermal history and high-temperature order–disorder phase transition in Fe–18Ga alloy

2019 ◽  
Vol 239 ◽  
pp. 147-150 ◽  
Author(s):  
Meng Sun ◽  
Xianping Wang ◽  
Weibin Jiang ◽  
Hui Wang ◽  
Yunxia Gao ◽  
...  
Keyword(s):  
Phase Transition ◽  
High Temperature ◽  
Thermal History ◽  
Disorder Phase Transition

Solid-phase reactions, self-propagating high-temperature synthesis, and order-disorder phase transition in thin films

JETP Letters ◽  
2000 ◽  
Vol 71 (5) ◽  
pp. 183-186 ◽  
Author(s):  
V. G. Myagkov ◽  
L. E. Bykova ◽  
G. N. Bondarenko ◽  
V. S. Zhigalov ◽  
A. I. Pol’skii ◽  
...  
Keyword(s):  
Thin Films ◽  
Phase Transition ◽  
High Temperature ◽  
Solid Phase ◽  
Temperature Synthesis ◽  
Disorder Phase Transition ◽  
High Temperature Synthesis ◽  
Solid Phase Reactions

High-temperature order–disorder phase transition in nacaphite, Na2CaPO4F

2015 ◽  
Vol 42 (8) ◽  
pp. 671-676 ◽  
Author(s):  
Margarita S. Avdontceva ◽  
Maria G. Krzhizhanovskaya ◽  
Sergey V. Krivovichev ◽  
Viktor N. Yakovenchuk
Keyword(s):  
Phase Transition ◽  
High Temperature ◽  
Disorder Phase Transition

Phase transition regulation and piezoelectric performance optimization of fresnoite crystal for high temperature acceleration sensing

2021 ◽  
Author(s):  
Chao Jiang ◽  
Caizi Zhang ◽  
Fangfei Li ◽  
Li Sun ◽  
Yanlu Li ◽  
...  
Keyword(s):  
Phase Transition ◽  
Electrical Resistivity ◽  
High Temperature ◽  
Performance Optimization ◽  
Elevated Temperatures ◽  
Piezoelectric Response ◽  
Potential Candidate ◽  
High Electrical Resistivity ◽  
Sensing Applications ◽  
Piezoelectric Performance

Fresnoite crystal, Ba2TiSi2O8 (BTS), is a potential candidate for high temperature piezoelectric sensing applications, due to high electrical resistivity and strong piezoelectric response at elevated temperatures. However, anomalies of electro-elastic...

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