Zobrazeno 1 - 10
of 75
pro vyhledávání: '"F. Del Giallo"'
Autor:
L. Cianchi, P. Moretti, Andrea Caneschi, Gabriele Spina, M. Lantieri, F. Del Giallo, M. Mancini
Publikováno v:
Journal of Magnetism and Magnetic Materials. 320:898-905
The magnetic anisotropy and the spin fluctuations of the paramagnetic molecule [ Fe ( OMe ) ( dpm ) 2 ] 2 are analyzed by means of Mossbauer spectroscopy in the temperature range [7.6–33] K. Spectra in the presence of a 5 T magnetic field directed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9773a21771f190a9f5e0becd886cd632
https://doi.org/10.1016/j.jmmm.2007.09.015
https://doi.org/10.1016/j.jmmm.2007.09.015
Publikováno v:
Journal of Superconductivity. 17:409-415
We present a comparative Mossbauer study of the 151Eu motions in the nonsuperconducting and superconducting cuprates EuSr2Cu3O7−δ (ESCO) and EuBa2Cu3O7−δ (EBCO), respectively, with the aim of investigating atomic-motion anharmonicities in these
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0cc61fa8f8a47651cfc7d6cd1e136fde
https://doi.org/10.1023/b:josc.0000034267.14896.31
https://doi.org/10.1023/b:josc.0000034267.14896.31
Publikováno v:
192 (2002): 415–419.
info:cnr-pdr/source/autori:Spina G. 1, Cianchi L. 2, Del Giallo F. 2/titolo:Corrections for Non--homogeneity of the Sample in Mossbauer f-factor Measurements/doi:/rivista:/anno:2002/pagina_da:415/pagina_a:419/intervallo_pagine:415–419/volume:192
info:cnr-pdr/source/autori:Spina G. 1, Cianchi L. 2, Del Giallo F. 2/titolo:Corrections for Non--homogeneity of the Sample in Mossbauer f-factor Measurements/doi:/rivista:/anno:2002/pagina_da:415/pagina_a:419/intervallo_pagine:415–419/volume:192
We describe a procedure for correcting the systematic errors in the Mossbauer f-factor measurement due to non-homogeneous effective thickness of the sample. To be more precise, we show that, if the mass of the sample is determined by means of X- or
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a45443b1538eb8673d76918144112aa6
https://doi.org/10.1016/s0168-583x(02)00487-1
https://doi.org/10.1016/s0168-583x(02)00487-1
Autor:
Gabriele Spina, F. Allegretti, L. Cianchi, F. Del Giallo, E. Abraham, F. Piazza, Paolo Ghigna
Publikováno v:
Journal of Superconductivity: Incorporating Novel Magnetism. 14:675-681
We report the results of 151Eu Mossbauer and Eu K-edge EXAFS measurements on samples of EuBa2Cu3O7 − δ. In particular, the ratios between the Eu Debye–Waller factors along the c and ab-plane directions, were obtained from the Mossbauer spectra i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::abd89320c08ba59d1e20db6e8ecec51b
https://doi.org/10.1023/a:1013239608487
https://doi.org/10.1023/a:1013239608487
Publikováno v:
Hyperfine Interactions. 136:105-123
The lattice dynamics of high-Tc EuBCO superconductor was studied by means of Mossbauer spectroscopy of the 151Eu ion in samples with oriented grains. Three samples were prepared: one oriented by means of 8 T magnetic field, another by means pressure;
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3982715a8dfb4c97e3be3efeddb01dd3
https://doi.org/10.1023/a:1015556430015
https://doi.org/10.1023/a:1015556430015
Publikováno v:
Solid State Communications. 150:903-905
In recent years the synthesis of antiferromagnetic rings traced a path to the observation of interesting quantum coherence phenomena in heterometallic Single Molecule Magnets. Because of the presence of different magnetic centers, it is crucial to un
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::31a283e3b9270fa226729fd7c19b9bf5
https://doi.org/10.1016/j.ssc.2010.03.011
https://doi.org/10.1016/j.ssc.2010.03.011
Autor:
Dante Gatteschi, Andrea Caneschi, L. Cianchi, F. Del Giallo, F. Pieralli, Gabriele Spina, P. Moretti
Publikováno v:
Journal of Physics: Condensed Matter. 11:3395-3403
The spin dynamics of a cluster of four iron (III) ions characterized by a spin ground state of 5 and Ising anisotropy has been investigated by means of Mossbauer spectroscopy from 10 to 80 K. For , spectra display a partially relaxed magnetic structu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5f303f276febed96ffaed485ef92972a
https://doi.org/10.1088/0953-8984/11/16/019
https://doi.org/10.1088/0953-8984/11/16/019
Publikováno v:
The European physical journal. B, Condensed matter physics
86 (2013): 333. doi:10.1140/epjb/e2013-40409-4
info:cnr-pdr/source/autori:M. Lantieri (1); G. Spina (2); L. Cianchi (1); F. Del Giallo (1)/titolo:Eu-151 Mossbauer study of multiferroic Eu0.75Y0.25MnO3/doi:10.1140%2Fepjb%2Fe2013-40409-4/rivista:The European physical journal. B, Condensed matter physics (Print)/anno:2013/pagina_da:333/pagina_a:/intervallo_pagine:333/volume:86
86 (2013): 333. doi:10.1140/epjb/e2013-40409-4
info:cnr-pdr/source/autori:M. Lantieri (1); G. Spina (2); L. Cianchi (1); F. Del Giallo (1)/titolo:Eu-151 Mossbauer study of multiferroic Eu0.75Y0.25MnO3/doi:10.1140%2Fepjb%2Fe2013-40409-4/rivista:The European physical journal. B, Condensed matter physics (Print)/anno:2013/pagina_da:333/pagina_a:/intervallo_pagine:333/volume:86
We are herewith reporting the 151Eu Mössbauer spectra collected on a polycrystalline powder sample of Eu0.75Y0.25MnO3 from 15 K to room temperature. All the spectra consist of a single line, whose shape and related sample thickness are dependent on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=cnr_________::53a2752860b19d7355da1241e130d778
http://link.springer.com/article/10.1140/epjb/e2013-40409-4
http://link.springer.com/article/10.1140/epjb/e2013-40409-4
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 101:280-286
An extended discussion is presented of the absolute absorption area method (AAAM) for measuring the Debye-Waller factor f of Mossbauer isotopes, the line widths of which are much greater than that of 57Fe. The problems arising from the determination
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0281ab55d25b821e35f7cb454f25b89f
https://doi.org/10.1016/0168-583x(95)00500-5
https://doi.org/10.1016/0168-583x(95)00500-5
Publikováno v:
Il Nuovo Cimento D. 16:1809-1814
Starting from the recent experiments that have revealed large-amplitude anharmonic vibrations in the cuprates, the possibility of formation of bipolarons has been investigated. A bipolaron model has been proposed, which tightly relies on the structur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6e95bf23f5583bfa30f4fc92dfa11224
https://doi.org/10.1007/bf02462178
https://doi.org/10.1007/bf02462178