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Abstract:

We measured up to the seventh harmonic response of the complex ac susceptibility (χ′ n - jχ″ n ; n = 1-7) vs. temperature, in YB 2 C 3 O x single crystals with different oxygen contents (6.5 ≤ x ≤ 7). The ac field was applied in presence of an external dc field both parallel to the c-axis of the crystals. We show evidence that deoxygenation leads to a reduction of bulk pinning strength evidenced by a decrease in the value of the third, fifth and seventh harmonics. We compare our measurements with a numerical model that includes effects of flux creep and sample geometry where the activation barrier depends explicitly on temperature. © 2002 Elsevier Science B.V. All rights reserved.

Registro:

Documento: Artículo
Título:AC susceptibility harmonic response in YBCO single crystals with different oxygen contents
Autor:Moreno, A.J.; Valenzuela, S.O.; Bekeris, V.
Filiación:Laboratorio De Bajas Temperaturas, Facultad De Ciencias Exactas Y Naturales, Pab. I, CP 1428, Buenos Aires, Argentina
Consejo Nacional De Investigaciones Científicas Y Técnicas (CONICET), Av. Rivadavia 1917, 1033 Buenos Aires, Argentina
Palabras clave:AC susceptibility; Deoxygenated single crystals; Harmonics; Pinning; YBCO; Harmonic analysis; Magnetic fields; Magnetic flux; Magnetic hysteresis; Magnetic moments; Single crystals; Superconducting transition temperature; Thermal effects; Yttrium barium copper oxides; Deoxygenation; High temperature superconductors
Año:2002
Volumen:377
Número:4
Página de inicio:466
Página de fin:474
DOI: http://dx.doi.org/10.1016/S0921-4534(01)01304-1
Título revista:Physica C: Superconductivity and its Applications
Título revista abreviado:Phys C Supercond Appl
ISSN:09214534
CODEN:PHYCE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09214534_v377_n4_p466_Moreno

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Citas:

---------- APA ----------
Moreno, A.J., Valenzuela, S.O. & Bekeris, V. (2002) . AC susceptibility harmonic response in YBCO single crystals with different oxygen contents. Physica C: Superconductivity and its Applications, 377(4), 466-474.
http://dx.doi.org/10.1016/S0921-4534(01)01304-1
---------- CHICAGO ----------
Moreno, A.J., Valenzuela, S.O., Bekeris, V. "AC susceptibility harmonic response in YBCO single crystals with different oxygen contents" . Physica C: Superconductivity and its Applications 377, no. 4 (2002) : 466-474.
http://dx.doi.org/10.1016/S0921-4534(01)01304-1
---------- MLA ----------
Moreno, A.J., Valenzuela, S.O., Bekeris, V. "AC susceptibility harmonic response in YBCO single crystals with different oxygen contents" . Physica C: Superconductivity and its Applications, vol. 377, no. 4, 2002, pp. 466-474.
http://dx.doi.org/10.1016/S0921-4534(01)01304-1
---------- VANCOUVER ----------
Moreno, A.J., Valenzuela, S.O., Bekeris, V. AC susceptibility harmonic response in YBCO single crystals with different oxygen contents. Phys C Supercond Appl. 2002;377(4):466-474.
http://dx.doi.org/10.1016/S0921-4534(01)01304-1