Small angle neutron scattering study of magnetic clustering in (Pr0.55Ca0.45)(Mn1-yCry)O-3 manganites (Articolo in rivista)

Type
Label
  • Small angle neutron scattering study of magnetic clustering in (Pr0.55Ca0.45)(Mn1-yCry)O-3 manganites (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.jallcom.2012.07.090 (literal)
Alternative label
  • C. Castellano a, A. Martinelli b, M. Ferretti b, c, M.R. Cimberle d, C. Mondelli e (2012)
    Small angle neutron scattering study of magnetic clustering in (Pr0.55Ca0.45)(Mn1-yCry)O-3 manganites
    in Journal of alloys and compounds
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • C. Castellano a, A. Martinelli b, M. Ferretti b, c, M.R. Cimberle d, C. Mondelli e (literal)
Pagina inizio
  • 67 (literal)
Pagina fine
  • 5 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 542 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 63 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • a Università degli Studi di Milano, Dipartimento di Chimica, Via Golgi 19, 20133 Milano, Italy b CNR-SPIN, C.so Perrone 24, 16152 Genova, Italy c Università degli Studi di Genova, Dipartimento di Chimica e Chimica Industriale, Via Dodecaneso 31, 16146 Genova, Italy d CNR-IMEM, Via Dodecaneso 33, 16146 Genova, Italy e CNR-IOM-OGG and TOF at Institut Laue-Langevin, 6 rue Jules Horowitz, 38042 Genoble Cedex 9, France (literal)
Titolo
  • Small angle neutron scattering study of magnetic clustering in (Pr0.55Ca0.45)(Mn1-yCry)O-3 manganites (literal)
Abstract
  • In the present paper we report a small angle neutron scattering (SANS) study of magnetic clusters formation in (Pr0.55Ca0.45)(Mn1-yCry)O3 (y = 0.00, 0.03, 0.06) manganites which was performed by analyzing, above and below the magnetic phase transitions, the momentum transfer q dependence of the SANS intensity on temperature and on the applied magnetic field 0 < H < 5 T. Thermal scans between 5 and 300 K in zero field, 1 and 5 T as well as isothermal field-scans at three different temperatures were collected in the suitable q range on each sample. These measurements allowed us to determine the spatial dimensions, density and distribution of the non-overlapping ferromagnetic clusters before, during and after their formation, both in the insulating high temperature and in the percolating low temperature phases. Our results indicate that the magnetic clusters formation is favoured by Mn/Cr partial substitution, thus emphasizing the importance of magnetic polarons in the natural tendency of manganites to phase separation and the possibility to tune by chemical substitution the relative weight of one phase component with respect to the other one. (literal)
Prodotto di
Autore CNR
Insieme di parole chiave

Incoming links:


Autore CNR di
Prodotto
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi
Insieme di parole chiave di
data.CNR.it