http://www.cnr.it/ontology/cnr/individuo/prodotto/ID201721
Magnetic and dielectric properties of Ba12Fe28Ti15O84 layered ferrite ceramics (Articolo in rivista)
- Type
- Label
- Magnetic and dielectric properties of Ba12Fe28Ti15O84 layered ferrite ceramics (Articolo in rivista) (literal)
- Anno
- 2011-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1088/0022-3727/44/43/435002 (literal)
- Alternative label
Curecheriu L.P.; Buscaglia M.T.; Ianculescu A.C.; Frunza R.C.; Ciuchi I.V.; Neagu A.; Apachitei G.; Bassano A.; Canu G.; Postolache P.; Mitoseriu L.; Buscaglia V. (2011)
Magnetic and dielectric properties of Ba12Fe28Ti15O84 layered ferrite ceramics
in Journal of physics. D, Applied physics (Online); IOP Publishing Ltd., Bristol BS1 6BE (Regno Unito)
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Curecheriu L.P.; Buscaglia M.T.; Ianculescu A.C.; Frunza R.C.; Ciuchi I.V.; Neagu A.; Apachitei G.; Bassano A.; Canu G.; Postolache P.; Mitoseriu L.; Buscaglia V. (literal)
- Pagina inizio
- Pagina fine
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
- http://puma.isti.cnr.it/dfdownload.php?ident=/cnr.ieni.ge/2011-A0-010&langver=it&scelta=Metadata (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
- Note
- ISI Web of Science (WOS) (literal)
- Scopu (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- 1,4-7,10,11 : Department of Physics, Al. I. Cuza University, Bv. Carol I no. 11, Iasi 700506, Romania /
2,8,9,12 : Institute of Energetics and Interphases, National Research Council, Via De Marini 6, I-16149 Genoa, Italy /
3 : Department of Science and Engineering of Oxide Materials, Polytechnics University of Bucharest, 1-7 Gh. Polizu, 011061 Bucharest, Romania (literal)
- Titolo
- Magnetic and dielectric properties of Ba12Fe28Ti15O84 layered ferrite ceramics (literal)
- Abstract
- In this study we report for the first time the magnetic and dielectric properties of the
quaternary layered ferrite Ba12Fe28Ti15O84. Dense ferrite ceramics were prepared by
conventional sintering using powders obtained by solid-state reaction and by coprecipitation.
Only the latter powder resulted in nearly single phase ceramics, whereas larger amounts of
secondary phases were observed in the material obtained by the solid-state route. According to
the HRTEM investigation, the ferrite lattice is originated by the intergrowth of perovskite-like
and spinel-like slabs and can be considered as a natural magnetic superlattice. A ferrimagnetic
order with saturation magnetization of ?12.5Am2 kg-1 and coercivity of ~1590Am-1
(~20 Oe) is proposed at room temperature. The thermomagnetic data indicate a Curie
temperature of ~420K for the quaternary ferrite. An additional magnetic transition was
detected at ~700K and ascribed to a secondary magnetic phase, probably the solid solution of
TiO2 in BaFe12O19. An intrinsic relative dielectric constant of the order of 23-50 at room
temperature was measured at 109 Hz. At lower frequency the dielectric behaviour is dominated
by extrinsic effects related to the heterogeneous electrical nature of the ceramics corresponding
to semiconducting grains separated by more insulating grain boundary regions. The dielectric
losses are rather high, often >1, indicating an overall semiconducting character of the material. (literal)
- Editore
- Prodotto di
- Autore CNR
- Insieme di parole chiave
Incoming links:
- Autore CNR di
- Prodotto
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi
- Editore di
- Insieme di parole chiave di