Resultats globals: 6 registres trobats en 0.02 segons.
Articles, 5 registres trobats
Documents de recerca, 1 registres trobats
Articles 5 registres trobats  
1.
4 p, 664.5 KB Tunability of the critical-current density in superconductor-ferromagnet hybrids / Valle Benedí, Nuria del (Universitat Autònoma de Barcelona. Departament de Física) ; Navau Ros, Carles (Universitat Autònoma de Barcelona. Departament de Física) ; Sánchez Moreno, Álvaro. (Universitat Autònoma de Barcelona. Departament de Física) ; Chen, Du-Xing (Universitat Autònoma de Barcelona. Departament de Física)
Important modifications on the magnetization loops of the superconductor have been observed in superconductor-ferromagnet hybrids due to the effects of the ferromagnetic components, which can be used for tuning the superconductor critical-current density Jc to desirable values. [...]
2011 - 10.1063/1.3591971
Applied physics letters, Vol. 98 (2011) , p. 202506/1-202506/3  
2.
4 p, 246.1 KB Flux-flow critical-state susceptibility of superconductors / Chen, Du Xing (Universitat Autònoma de Barcelona. Departament de Física) ; Sánchez Moreno, Álvaro (Universitat Autònoma de Barcelona. Departament de Física) ; Pardo Vive, Enric (Slovak Academy of Sciences. Institute of Electrical Engineering) ; American Physical Society
The field-amplitude Hm and circular frequency ω dependent ac susceptibility, χ=χ′−jχ′′, of a hard superconducting cylinder with flux-flow type current-voltage characteristic is calculated. [...]
2005 - 10.1063/1.1947370
Applied Physics Letters, Vol. 86, Issue 24 (June 2005) , p. 242503/1-242503/3  
3.
4 p, 260.7 KB ac susceptibility and critical-current densities in sintered YBa2Cu3O7−δ superconductors / Chen, Du-Xing (Institució Catalana de Recerca i Estudis Avançats) ; Sánchez Moreno, Álvaro (Universitat Autònoma de Barcelona. Departament de Física) ; Pardo Vive, Enric (Universitat Autònoma de Barcelona. Departament de Física) ; Bartolomé Porcar, María Elena (Universitat Autònoma de Barcelona. Departament de Física) ; American Physical Society
The field-amplitude and frequency dependent complex ac susceptibility of a well sinteredYBa2Cu3O7−δ disk has been measured at 77K, which shows that its intra- and intergranular critical-current densities are determined by the collective flux creep inside the grains and the maximum Josephsoncurrents across the grain boundaries, respectively. [...]
2006 - 10.1063/1.2336596
Applied Physics Letters, Vol. 89, Issue 7 (August 2006) , p. 072501/1-072501/3  
4.
10 p, 380.8 KB Calibration of low-temperature ac susceptometers with a copper cylinder standard / Chen, Du-Xing (Universitat Autònoma de Barcelona. Departament de Física) ; Skumryev, Vassil (Universitat Autònoma de Barcelona. Departament de Física)
A high-quality low-temperature ac susceptometer is calibrated by comparing the measured ac susceptibility of a copper cylinder with its eddy-current ac susceptibility accurately calculated. Different from conventional calibration techniques that compare the measured results with the known property of a standard sample at certain fixed temperature T, field amplitude Hm, and frequency f, to get a magnitude correction factor, here, the electromagnetic properties of the copper cylinder are unknown and are determined during the calibration of the ac susceptometer in the entire T, Hm, and f range. [...]
2010 - 10.1063/1.3309779
Review of scientific instruments, Vol. 81, Núm. 2 (Feb. 2010) , p. 025104/1-025104/10  
5.
9 p, 631.0 KB Calibration of ac and dc magnetometers with a Dy2O3 standard / Chen, Du-Xing (Universitat Autònoma de Barcelona. Departament de Física) ; Skumryev, Vassil (Universitat Autònoma de Barcelona. Departament de Física) ; Bozzo, B. (Institut de Ciència de Materials de Barcelona)
The ac susceptibility and magnetization curves of a glued Dy2O3 powder sample are measured by an ac susceptometer and a dc superconducting quantum interference device magnetometer, both of which have been calibrated previously. [...]
2011 - 10.1063/1.3581224
Review of scientific instruments, Vol. 82, Núm. 4 (April 2011) , p. 045112/1-045112/9  

Documents de recerca 1 registres trobats  
1.
62 p, 662.4 KB Geometry effects on the electromagnetic properties of linear magnetic materials and superconductors in the critical state / Pardo Vivé, Enric ; Sánchez Moreno, Álvaro, dir. (Universitat Autònoma de Barcelona. Departament de Física) ; Chen, Du Xing, dir. (Universitat Autònoma de Barcelona. Departament de Física)
Efectes de Geometria en les Propietats Electromagnètiques de Materials Lineals i de Superconductors en l'Estat Crític El comportament electromagnètic d'un cert material no només depèn de les seves propietats intrínseques sinó també de la geometria de la mostra estudiada. [...]
The electromagnetic behaviour of a certain material do not only depends on its internal properties but also on the geometry of the studied sample. Actually, some magnetic quantities in samples of the same material but different geometry can vary in several orders of magnitude. [...]

Bellaterra : Universitat Autònoma de Barcelona, 2004
2 documents

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