Zobrazeno 1 - 10
of 229
pro vyhledávání: '"J. Kötzler"'
Publikováno v:
Journal of Magnetism and Magnetic Materials. :591-594
By co-evaporation of Ni and an alloy of Mn and In, thin films of the Heusler alloy Ni 2 MnIn are deposited at temperatures around 300 ∘ C. Electron diffraction reveals the L 2 1 -ordered cubic structure (Fm3m). Magnetization data shows an onset of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b8e819883a2e1ae1620901f0e0f70667
https://doi.org/10.1016/j.jmmm.2004.11.272
https://doi.org/10.1016/j.jmmm.2004.11.272
Autor:
L. von Sawilski, Sara Casalbuoni, L. Lilje, Peter Schmüser, E. A. Knabbe, Bernd Steffen, J. Kötzler
Publikováno v:
Nuclear instruments & methods in physics research / A 538(1-3), 45-64 (2005). doi:10.1016/j.nima.2004.09.003
Nuclear instruments & methods in physics research / A 538(1-3), 45 - 64 (2005). doi:10.1016/j.nima.2004.09.003
A systematic study is presented on the superconductivity (sc) parameters of the ultrapure niobium used for the fabrication of the nine
A systematic study is presented on the superconductivity (sc) parameters of the ultrapure niobium used for the fabrication of the nine
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a0f4726ffccce58c46ab803d304dd684
https://doi.org/10.1016/j.nima.2004.09.003
https://doi.org/10.1016/j.nima.2004.09.003
Publikováno v:
Review of Scientific Instruments. 75:1243-1247
We report measurements of the complex resonance frequency, fr=fr+iΔf, of a helical resonator (fr=0.45 GHz) and a cylindrical cavity (fr=21.3 GHz), both loaded with a 50 nm thin YBa2Cu2O7−δ film (Tc=86 K) on a MgO disk, between 50 K and 250 K. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::444e26f2b95a50a1c7126a35f870e90a
https://doi.org/10.1063/1.1710693
https://doi.org/10.1063/1.1710693
Publikováno v:
physica status solidi (b). 236:303-309
The static and dynamic magnetic properties of the nanocrystalline soft magnetic FeNbB alloys consisting of Fe-nanograins embedded in an amorphous matrix were investigated by means of dc and ac susceptibility, magnetization and hysteresis loop measure
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::80f6066496ce4baef81cad29d6a4cd68
https://doi.org/10.1002/pssb.200301669
https://doi.org/10.1002/pssb.200301669
Autor:
Horst Weller, Dmitri V. Talapin, J. Kötzler, Markus Haase, Andreas Kornowski, Andrey L. Rogach, F. Wiekhorst, Elena V. Shevchenko
Publikováno v:
Advanced Materials. 14:287-290
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::65b0a088699607b46fada64531de2e65
https://doi.org/10.1002/1521-4095(20020219)14:4<287::aid-adma287>3.0.co
https://doi.org/10.1002/1521-4095(20020219)14:4<287::aid-adma287>3.0.co
Publikováno v:
Materials Research Bulletin. 35:1805-1812
Superconducting whiskers were grown by the self-flux method from Bi 2 Sr 2 Ca 0.9 La 0.1 Cu 2 O 8+δ + 0.2Bi 2 O 3 melt. The whiskers of composition Bi 1.82 Sr 1.38 Ca 0.2 La 0.38 Cu 1.0 O 6+δ were characterized by scanning electron microscopy, ener
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e9d71491ea132cac8ec561ca99d2c4a
https://doi.org/10.1016/s0025-5408(00)00386-x
https://doi.org/10.1016/s0025-5408(00)00386-x
Publikováno v:
Superconductor Science and Technology. 13:964-967
On nanocrystalline materials, which were grown by an appropriate annealing of quasi-amorphous Bi2Sr2CaCu2O8+δ, the static magnetic susceptibility χ and electrical conductivity σ have been measured between 1.8 and 300 K. Up to grain sizes of dc = 5
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d8477361725d6ced297f3d6b4fc58e52
https://doi.org/10.1088/0953-2048/13/7/309
https://doi.org/10.1088/0953-2048/13/7/309
Publikováno v:
Journal of Crystal Growth. 207:154-159
Bi2Sr2-xLaxCaCu2O8+d superconducting whiskers were successfully grown from Bi-rich meltscontaining various La contents. Effect of La-doping on the whisker growth, structure and superconductivity has been studied. It has been found that the whiskers c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bfe5511291cf1280fe214f381cf0bff2
https://doi.org/10.1016/s0022-0248(99)00469-8
https://doi.org/10.1016/s0022-0248(99)00469-8
Autor:
J. Kötzler, Hao Jin
Publikováno v:
Physica C: Superconductivity. 325:153-158
Single crystals of the layered superconductor Bi2Sr2(Ca1-xLax)Cu2O8+d were successfully grown out by a self-flux method. Upon La-doping, the c-axis contracts but the structure remains stable up to the critical concentration xc, above which the crysta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a48a1a683a19009db96cb7d0abdc1131
https://doi.org/10.1016/s0921-4534(99)00457-8
https://doi.org/10.1016/s0921-4534(99)00457-8
Publikováno v:
Physica A: Statistical Mechanics and its Applications. 266:255-262
By high-resolution SQUID-magnetometry, we study the influence of columnar defects of field-equivalent density B φ =1 T on the flux creep in thin YBa 2 Cu 3 O 7− δ films. At temperatures T ∗ (B,B φ ) , the relaxation rates reveal a sharp crosso
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::01a45091d6afde96bd334ed8347e7bc5
https://doi.org/10.1016/s0378-4371(98)00601-3
https://doi.org/10.1016/s0378-4371(98)00601-3