Flux Trapped State Versus Glassy State in Superconducting BaErCuO and BaYCuTiO

1987 ◽  
Vol 99 ◽  
Author(s):  
Sang Boo Nam
Keyword(s):  
Glassy State ◽  
Zero Field ◽  
Cooling Process ◽  
Temperature Dependent ◽  
Zero Field Cooling ◽  
Temperature Dependent Magnetization ◽  
Field Cooling

ABSTRACTThe temperature dependent magnetization, M(T), of superconducting BaErCuO and BaYCuTiO was measured via the BTi SQUID susceptometer. In the zero field cooling case, M(T) of BaErCuO was found to be similar to that of Pb. But, M(T) of BaYCuTiO was found to decrease rapidly with T and be almost linear in T. However, in the field cooling case the fluxoids were found to be trapped at all T below Tc, and its amount was found to depend on Ts at which the sample starts to be cooled, as observed in Pb. The ergodic limiting points were not observed within the chosen parameters. The irreversibility of magnetization observed in both BaErCuO and BaYCuTiO is attributed to the fluxoids, trapped during the field cooling process.

Magnetic flux penetration in high Tc superconducting bearing in zero-field cooling process

Cryogenics ◽  
1993 ◽  
Vol 33 (9) ◽  
pp. 914-919
Author(s):  
M. Komori ◽  
T. Matsushita ◽  
M. Takeo
Keyword(s):  
Magnetic Flux ◽  
Zero Field ◽  
Cooling Process ◽  
Flux Penetration ◽  
High Tc ◽  
Zero Field Cooling ◽  
Field Cooling

The reversal of the spontaneous exchange bias effect and zero-field-cooling magnetization in La1.5Sr0.5Co1−xFexMnO6: the effect of Fe doping

2017 ◽  
Vol 19 (36) ◽  
pp. 25186-25196 ◽  
Author(s):  
H. G. Zhang ◽  
L. Xie ◽  
X. C. Liu ◽  
M. X. Xiong ◽  
L. L. Cao ◽  
...  
Keyword(s):  
Magnetization Reversal ◽  
Exchange Bias ◽  
Zero Field ◽  
Fe Doping ◽  
Temperature Dependent ◽  
Bias Effect ◽  
Exchange Bias Effect ◽  
Ion Doping ◽  
Zero Field Cooling ◽  
Temperature Dependent Magnetization

The temperature-dependent magnetization reversal and spontaneous exchange bias sign switching are simultaneously achieved in La1.5Sr0.5CoMnO6 by Fe ion doping.

scholarly journals Síntesis del superconductor YBa2Cu3O7- δ mediante sinterización por descarga luminiscente anormal

2017 ◽  
Vol 41 (158) ◽  
pp. 36
Author(s):  
Erika Yazmin Soto-Gómez ◽  
Armando Sarmiento-Santos ◽  
Carlos Arturo Parra-Vargas
Keyword(s):  
Zero Field ◽  
Zero Field Cooling ◽  
Field Cooling

En este trabajo se reporta la síntesis del superconductor YBa2Cu3O7-δ mediante el método no convencional de sinterización por plasma en el rango de descarga luminiscente anormal (DLA). Las muestras se sometieron a diferentes temperaturas y tiempos de sinterización. Como referencia se usó una muestra superconductora obtenida por el método convencional (horno resistivo). La caracterización estructural de estas muestras se hizo por difracción de rayos X y refinamiento con el método de Rietveld. El comportamiento superconductor se determinó mediante el análisis de las curvas de magnetización en función de la temperatura según los procedimientos experimentales de enfriado en campo magnético cero (zero field cooling, ZFC) y enfriado con campo magnético aplicado (field cooling, FC). Las muestras sinterizadas por DLA presentaron características estructurales (ortorrómbica Pmmm) y superconductoras con una temperatura crítica de Tc~ 92 K, similares a las obtenidas por el método convencional, pero con una significativa reducción en las temperaturas y tiempos, bajo un ambiente adecuado de presión en el proceso de sinterización. © 2017. Acad. Colomb. Cienc. Ex. Fis. Nat.

Calorimetric properties of a superconducting anisotropic square: ZFC process

2020 ◽  
pp. 2150128
Author(s):  
C. A. Aguirre ◽  
Q. D. Martins ◽  
J. Barba-Ortega
Keyword(s):  
Specific Heat ◽  
Free Energy Density ◽  
Vortex State ◽  
Cooper Pairs ◽  
Zero Field ◽  
Cooling Process ◽  
Ginzburg Landau ◽  
Ginzburg Landau Equations ◽  
Zero Field Cooling

We analyzed the role of the inclusion of anti-dots on the vortex state and some calorimetric properties of a mesoscopic superconducting square immersed in an external applied magnetic field. We calculated the magnetization, entropy, Gibbs free energy, density of Cooper pairs and specific heat for this system in a zero field cooling process, solving the time-dependent Ginzburg–Landau equations. We found that the critical temperature is non-dependent on the number of anti-dots and dependent slightly on the size of the defects. Oscillations in the entropy and specific heat are found due the temperature dependence of the superconducting characteristics length.

Induction technique for superconducting rings between field cooling and zero field cooling

2007 ◽  
Vol 459 (1-2) ◽  
pp. 24-26 ◽  
Author(s):  
H. González-Jorge ◽  
I. Quelle ◽  
L. Romaní ◽  
G. Domarco
Keyword(s):  
Zero Field ◽  
Induction Technique ◽  
Superconducting Rings ◽  
Zero Field Cooling ◽  
Field Cooling

Enhanced ferroelectricity and ferromagnetism in La1−xBixCrO3 by Bi3+ substitution

2007 ◽  
Vol 22 (8) ◽  
pp. 2081-2086 ◽  
Author(s):  
H-Y. Guo ◽  
J.I.L. Chen ◽  
Z-G. Ye ◽  
A.S. Arrott
Keyword(s):  
Solid Solution ◽  
Magnetic Properties ◽  
Quantum Interference ◽  
Remanent Polarization ◽  
Magnetic Hysteresis ◽  
Zero Field ◽  
Ferroelectric Hysteresis ◽  
Different Origins ◽  
Zero Field Cooling ◽  
Field Cooling

The ferroelectric and magnetic properties of the perovskite solid solution, (1 − x)LaCrO3–xBiCrO3, have been investigated. While pure LaCrO3 does not show ferroelectric hysteresis even at 77 K, the solid solution of La1−xBixCrO3 with x = 0.1, 0.2, 0.3, and 0.35 displays ferroelectric hysteresis, with the remanent polarization increasing with the increase of the Bi3+ content. Using a superconducting quantum interference device, the magnetization was measured versus temperature under field cooling (FC) and zero field cooling (ZFC) conditions. Magnetic hysteresis has been found in La1−xBixCrO3 (0.1 ⩽ x ⩽ 0.3) below the Néel temperature, TN. With the increase of Bi3+ content, TN decreases, while the magnetization below TN is enhanced. While the ferroelectric and magnetic properties could be due to different origins, the Bi substitution results in both ferroelectric and magnetic enhancements in the (1 − x)LaCrO3–xBiCrO3 solid solutions.

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