Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Jean Muller"'
Publikováno v:
Physica C: Superconductivity and Its Applications, Vol. 248, No 3-4 (1995) pp. 335-342
The specific heat of Tl 2 Ba 2 CuO 6 (“2201”) superconducting ceramics with T c ≈ 90 K is measured in magnetic fields of 0, 0.1, 1, 3, 5, and 14 T. The very small anomaly at the superconducting transition can be described in B = 0 by 2D fluctua
Publikováno v:
Physica C: Superconductivity and Its Applications, Vol. 244, No 3-4 (1995) pp. 225-230
The specific heat C of superconductors is strongly depressed just below the transition temperature by an increase of the magnetic field ΔB . A measurement of the function | ∂ ( C / T )/ ∂B | for different magnetic fields at T ≈ T c , which can
Publikováno v:
Physica C: Superconductivity and Its Applications, Vol. 242, No 1-2 (1995) pp. 143-154
We investigate the reversible magnetization in the mixed state of a batch of Bi 2.12 Sr 1.90 Ca 1.02 Cu 1.96 O 8 + δ (Bi-2212) ceramics with different oxygen concentrations δ and superconducting transition temperatures T c between 50 and 92 K. Addi
Publikováno v:
Physica C: Superconductivity and Its Applications, Vol. 241, No 3-4 (1995) pp. 301-310
The specific heat of porous YBa 2 Cu 3 O ≈7.00 ceramics with two well separated steps at the superconducting transition was measured in magnetic fields up to 14 T. The same measurements were performed for an YBa 2 Cu 3 O ≈6.93 ceramics from a sim
Publikováno v:
Physica B: Condensed Matter, Vol. 204, No 1-4 (1995) pp. 167-175
Recently, the unusual behaviour of the specific heat of the superconductors YBa2Cu3O7, Y2Ba4Cu7O15, and YBa2Cu4O8 at high field and low temperature was attributed to Zeeman splitting of localized states in the vortex cores [D. Sanchez et al., Physica
Publikováno v:
Physica C: Superconductivity and Its Applications, Vol. 216, No 1-2 (1993) pp. 129-139
A homogeneous batch of YBa2Cu3Ox porous ceramics was studied in detail as a function of the annealing temperature Ta. X-ray diffraction patterns and optical micrographs show definitely one single phase. Well-separated double superconducting transitio
Autor:
J. C. Vallier, Roberto Calemczuk, J.Y. Henry, Gilles Triscone, E. Bonjour, Jean Muller, Alain Junod
Publikováno v:
Physica C: Superconductivity and Its Applications, Vol. 211, No 3-4 (1993) pp. 304-318
The specific heat of a single crystal of YBa2Cu3O7 was measured by adiabatic calorimetry between 40 and 150 K. The typical scatter of the data is well below 0.1%. Fields up to 20 T were applied either parallel or perpendicular to the c-axis. The shap
Autor:
T. Graf, Jean-Yves Genoud, Christine Opagiste, Gilles Triscone, Jean Muller, Alain Junod, M. François
Publikováno v:
Journal of Alloys and Compounds, Vol. 196, No 1-2 (1993) pp. 235-239
We have attempted to substitute calcium on the yttrium and barium sites in the “247” superconducting phase, i.e. (Y1 - x Cax)2Ba4 Cu7O15 + δ and Y2(Ba1 - xCax)4Cu7O15 + δ. X-Ray diffraction and microprobe analyses indicate that calcium enters t
Publikováno v:
Physica C: Superconductivity and Its Applications, Vol. 192, No 1-2 (1992) pp. 137-146
A great number of pure and homogeneous Y2Ba4Cu7Oz samples were investigated by AC susceptibility, field cooling magnetization measurements, X-ray diffraction, microprobe analysis and microstructural examinations in a light microscope and a scanning e
Publikováno v:
Journal of Magnetism and Magnetic Materials, Vol. 195, No 1 (1999) pp. 65-75
Using a SQUID magnetometer, the magnetic field-induced magnetization has been measured on a ferroelastically `poled’ orthorhombic ferroelectric/ferroelastic single domain of Ni3B7O13Br. Measurements were performed along the three principal orthorho
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1b96a05ea0d718530f2e7cf38cedbd16
https://archive-ouverte.unige.ch/unige:31111
https://archive-ouverte.unige.ch/unige:31111