Calorimetric study of YBa2Cu3O6.92 in very high magnetic field: 27 Tesla

E. Janod; C. Marcenat; C. Baraduc; A. Junod; R. Calemczuk; G. Deutscher; J. Y. Henry

doi:10.1016/0921-4534(94)92103-2

Calorimetric study of YBa₂Cu₃O_6.92 in very high magnetic field: 27 Tesla

E. Janod^*, C. Marcenat, C. Baraduc, A. Junod, R. Calemczuk, G. Deutscher, J. Y. Henry

^*Corresponding author for this work

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

The specific heat of a large YBa₂Cu₃O_6.92 single crystal (m≈150 mg) was measured between 0 and 27 Tesla. In contrast with previous results obtained at lower fields, the specific heat above T_c is field-dependent up to 100 K. The high magnetic fields combined with a narrow transition width (ΔT_c^10-90%=0.15 K in ac susceptibility) allow an accurate analysis of the different contributions in the vicinity of T_c(H=0). 2D-3D gaussian and 3D-xy critical fluctuations models are compared. A positive curvature of H_c2(T) line is observed up to 10 Tesla. The compatibility of the calorimetric and magnetic measurements [1] through Maxwell's relation is also verified.

Original language	English
Pages (from-to)	1763-1764
Number of pages	2
Journal	Physica C: Superconductivity and its Applications
Volume	235-240
Issue number	PART 3
DOIs	https://doi.org/10.1016/0921-4534(94)92103-2
State	Published - Dec 1994

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title = "Calorimetric study of YBa2Cu3O6.92 in very high magnetic field: 27 Tesla",

abstract = "The specific heat of a large YBa2Cu3O6.92 single crystal (m≈150 mg) was measured between 0 and 27 Tesla. In contrast with previous results obtained at lower fields, the specific heat above Tc is field-dependent up to 100 K. The high magnetic fields combined with a narrow transition width (ΔTc10-90\%=0.15 K in ac susceptibility) allow an accurate analysis of the different contributions in the vicinity of Tc(H=0). 2D-3D gaussian and 3D-xy critical fluctuations models are compared. A positive curvature of Hc2(T) line is observed up to 10 Tesla. The compatibility of the calorimetric and magnetic measurements [1] through Maxwell's relation is also verified.",

author = "E. Janod and C. Marcenat and C. Baraduc and A. Junod and R. Calemczuk and G. Deutscher and Henry, \{J. Y.\}",

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T1 - Calorimetric study of YBa2Cu3O6.92 in very high magnetic field

T2 - 27 Tesla

AU - Janod, E.

AU - Marcenat, C.

AU - Baraduc, C.

AU - Junod, A.

AU - Calemczuk, R.

AU - Deutscher, G.

AU - Henry, J. Y.

PY - 1994/12

Y1 - 1994/12

N2 - The specific heat of a large YBa2Cu3O6.92 single crystal (m≈150 mg) was measured between 0 and 27 Tesla. In contrast with previous results obtained at lower fields, the specific heat above Tc is field-dependent up to 100 K. The high magnetic fields combined with a narrow transition width (ΔTc10-90%=0.15 K in ac susceptibility) allow an accurate analysis of the different contributions in the vicinity of Tc(H=0). 2D-3D gaussian and 3D-xy critical fluctuations models are compared. A positive curvature of Hc2(T) line is observed up to 10 Tesla. The compatibility of the calorimetric and magnetic measurements [1] through Maxwell's relation is also verified.

AB - The specific heat of a large YBa2Cu3O6.92 single crystal (m≈150 mg) was measured between 0 and 27 Tesla. In contrast with previous results obtained at lower fields, the specific heat above Tc is field-dependent up to 100 K. The high magnetic fields combined with a narrow transition width (ΔTc10-90%=0.15 K in ac susceptibility) allow an accurate analysis of the different contributions in the vicinity of Tc(H=0). 2D-3D gaussian and 3D-xy critical fluctuations models are compared. A positive curvature of Hc2(T) line is observed up to 10 Tesla. The compatibility of the calorimetric and magnetic measurements [1] through Maxwell's relation is also verified.

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IS - PART 3

ER -

Calorimetric study of YBa₂Cu₃O_6.92 in very high magnetic field: 27 Tesla

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