Zobrazeno 1 - 10
of 90
pro vyhledávání: '"L. R. Testardi"'
Publikováno v:
Journal of Applied Physics. 83:3111-3117
We have measured the Seebeck coefficient and electric conductivity in the air-stable conducting polymers polyaniline and polypyrrole at different doping levels. We find, at 300 K, the general correlation that the logarithm of the electrical conductiv
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5d78f03329565cae9838b35fd75852c0
https://doi.org/10.1063/1.367119
https://doi.org/10.1063/1.367119
Publikováno v:
Journal of Superconductivity. 8:207-210
Complex dielectric response measurements have been made on a C60/C70 mixture pellet. The frequency and temperature ranges cover from 20 Hz to 1 MHz and from 30 to 300 K. Results show that the real part of the dielectric constant is 5 with a weak ther
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::01a94839a6caf298e6ac8103fe166f33
https://doi.org/10.1007/bf00732372
https://doi.org/10.1007/bf00732372
Autor:
H. Mathias, Ronald J. Clark, L. R. Testardi, Gang Cao, Gung Chern, J. W. O’Reilly, J. E. Crow, Stephen A. Skirius, G. P. Mazzara
Publikováno v:
Physical Review B. 47:8119-8123
A study of the dielectric response as a function of frequency (${10}^{2--}$${10}^{6}$ Hz) and temperature (4.2--300 K) in ceramic and c-axis-oriented single-crystal samples of ${\mathrm{PrBa}}_{2}$${\mathrm{Cu}}_{3}$${\mathrm{O}}_{\mathit{x}}$ reveal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::da0fca20c91a4a1f7f6c155493f24567
https://doi.org/10.1103/physrevb.47.8119
https://doi.org/10.1103/physrevb.47.8119
Publikováno v:
Solid State Communications. 84:197-200
Using films of YBa2Cu3Ox synthesized in a novel manner, we find an unusual current-voltage behavior characterized by a low temperature transition from ohmic response to a simple power law I=I0Vγ covering 3 orders of magnitude in V. γ is found to de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3674de6349ab7db5585384694362e21d
https://doi.org/10.1016/0038-1098(92)90324-3
https://doi.org/10.1016/0038-1098(92)90324-3
Publikováno v:
Physical Review B. 45:10639-10646
Dielectric constants from 10 2 to 10 6 are found in room-temperature, ceramic, nonmetallic YBa 2 Cu 3 O 6+δ (δ∼0-0.4). The frequency, temperature, and electric-field dependencies of the dielectric response, as well as the quasistatic current-volt
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::17ac7931babf70260fc26e5353ea618a
https://doi.org/10.1103/physrevb.45.10639
https://doi.org/10.1103/physrevb.45.10639
Publikováno v:
Physical Review B. 45:3644-3651
We have utilized molecular-beam-epitaxy techniques in an electron-cyclotron-resonance oxygen plasma to synthesize thin films of NiO, ${\mathrm{Fe}}_{3}$${\mathrm{O}}_{4}$ (magnetite), and modulated structures of these compounds with repeat structures
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2b202540ee3fb629f87498b7483cb26f
https://doi.org/10.1103/physrevb.45.3644
https://doi.org/10.1103/physrevb.45.3644
Publikováno v:
Physical Review B. 45:1838-1850
Oriented single-crystalline thin films of NiO and ${\mathrm{Fe}}_{3}$${\mathrm{O}}_{4}$, and ${\mathrm{Fe}}_{3}$${\mathrm{O}}_{4}$/NiO superlattices have been grown on cleaved and polished substrates of MgO(001), using oxygen-plasma-assisted molecula
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::66c87cdb126638ce24a89884966ac4cb
https://doi.org/10.1103/physrevb.45.1838
https://doi.org/10.1103/physrevb.45.1838
Autor:
Y. S. Hascicek, L. R. Testardi
Publikováno v:
Physical Review B. 43:2853-2856
Restoration of the resistive state of bulk YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}} between 4.2 K and {ital T}{sub {ital c}} was investigated by transport measurements using {ital J}{gt}{ital J}{sub {ital c}}. Unlike the low-{ital T}{sub {ital c}}
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::44ccc38568e19b8c7a6791c94ae7f86d
https://doi.org/10.1103/physrevb.43.2853
https://doi.org/10.1103/physrevb.43.2853
Autor:
Y. S. Hascicek, R. J. Kennedy, Th. Leventouri, H. K. Niculescu, L. R. Testardi, P. J. Gielisse
Publikováno v:
Journal of Applied Physics. 69:863-866
Transport critical current density Jc versus temperature measurements on bulk YBa2Cu3O7−x and YBa2Cu3O7−x‐Ag samples were carried out. An anomalous bifurcation in Jc‐T curves was observed at temperatures between 55 and 88 K. The bifurcation w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0bb8202b70a2075d2c2b394b0f2bd930
https://doi.org/10.1063/1.347324
https://doi.org/10.1063/1.347324
Transport critical current densities of partially aligned bulk samples of YBa2Cu3O7−xsuperconductors
Publikováno v:
Journal of Applied Physics. 68:4178-4182
Temperature and magnetic field dependence of critical current densities (Jc) of partially oriented bulk YBa2Cu3O7−x samples are presented. A series of partially oriented samples has been fabricated by repeating the steps of the solid‐state reacti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::913a2a3c97287d88c050503459b348f4
https://doi.org/10.1063/1.346232
https://doi.org/10.1063/1.346232