Zobrazeno 1 - 6
of 6
pro vyhledávání: '"Carlos Fainstein"'
Publikováno v:
Ferroelectrics. 128:249-254
We report measurements on x-rays diffraction and Raman, infrared and Mossbauer absorption spectra of Bi2Sr2Ca1(Cu1−x, Fex)2O8+δ, 0·05≤x≤0·25. X-ray analysis shows that the increment of Fe in the CuO2 layers results in the growing of the n=1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ff58b56022a8e10b32dced7d044204ea
https://doi.org/10.1080/00150199208015100
https://doi.org/10.1080/00150199208015100
Publikováno v:
Hyperfine Interactions. 70:1155-1158
XRD analysis and Mossbauer Spectroscopy studies were performed on samples of the ceramic oxide of nominal composition Bi2Sr2CaCu2O8 doped with iron substituting copper up to 25%. XRD results point out that increased doping favors the growth of the n=
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f9045414e54325b09bbfee7c9c2493c2
https://doi.org/10.1007/bf02397534
https://doi.org/10.1007/bf02397534
Publikováno v:
Hyperfine Interactions. 66:167-176
Mossbauer spectroscopy spectra of the ceramic Bi2Sr2Ca(Cu1-x Fe x )2O8+y forx=0, 0.005, 0.02 and 0.05 shows two doublets, that can be assigned to two different environments for the substituting ion. One of the sites is identified as a single Fe ion r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::03eb9d787eeeaafbcffc75cb53b91921
https://doi.org/10.1007/bf02395865
https://doi.org/10.1007/bf02395865
Publikováno v:
Physica C: Superconductivity. 168:493-498
Samples of Bi 2 Sr 2 Ca 1 Cu 2 O 8+ y doped with concentrations up to 5% iron were prepared and characterized by XRD, microprobe analysis, and electrical conductivity measurements. Mossbauer spectra on those samples show two doublets, one of which is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3f1026dabc808956b029642e85a849cc
https://doi.org/10.1016/0921-4534(90)90068-p
https://doi.org/10.1016/0921-4534(90)90068-p
Publikováno v:
Physica C: Superconductivity. :1065-1066
We report transmission spectra of crystallites, taken from single crystal specimens of two plane Bi 2 Sr 2 Ca 1 (Cu 1−x ,Zn x ) 2 O 8+δ , 0.0≤x≤0.05, diluted in CsI or polyethylene matrices In addition to weaker features assigned to unscreened
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e2db025115fc4754f4a444ec05a51dcb
https://doi.org/10.1016/0921-4534(94)91757-4
https://doi.org/10.1016/0921-4534(94)91757-4
Autor:
L. B. Steren, G. Nieva, S.M. Dutrus, Carlos Fainstein, J. L. Smith, Sheldon Schultz, Zachary Fisk, Roberto D. Zysler, M.T. Causa, D. C. Vier, Rodolfo Sánchez, M. Tovar, S. B. Oseroff
Publikováno v:
Physica C: Superconductivity. :188-189
We have measured the specific heat of Gd x Eu 1−x Ba 2 Cu 3 O 7−δ (0 ≤ × ≤ 1). The data show a λ-type anomaly at high concentrations and a broad Schottky type anomaly at intermediate and low concentrations. We compare this behavior with th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::308cde0cd753317f5d3bc553f192bd23
https://doi.org/10.1016/0921-4534(88)90545-x
https://doi.org/10.1016/0921-4534(88)90545-x