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Pregled bibliografske jedinice broj: 312230

Onfluence of oxygen stoichiometry on transport, optical and magnetic properties of the room-temperature ferrimagnetic oxide semiconductor Fe_1.5Ti_0.5O_3-δ


Ndilimabaka, Herve; Dumont, Yves; Popova, E.; Basletić, Mario; Desfonds, P.; Bibes, Manuel; Godlewski, M.; Bouzehouane, Karim; Jomard, F.; Keller, N
Onfluence of oxygen stoichiometry on transport, optical and magnetic properties of the room-temperature ferrimagnetic oxide semiconductor Fe_1.5Ti_0.5O_3-δ // 52nd Annual Conference on Magnetism and Magnetic Materials (MMM2007)Tampa (SAD)
Tampa, SAD, 2007. (predavanje, međunarodna recenzija, sažetak, znanstveni)


CROSBI ID: 312230 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Onfluence of oxygen stoichiometry on transport, optical and magnetic properties of the room-temperature ferrimagnetic oxide semiconductor Fe_1.5Ti_0.5O_3-δ

Autori
Ndilimabaka, Herve ; Dumont, Yves ; Popova, E. ; Basletić, Mario ; Desfonds, P. ; Bibes, Manuel ; Godlewski, M. ; Bouzehouane, Karim ; Jomard, F. ; Keller, N

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
52nd Annual Conference on Magnetism and Magnetic Materials (MMM2007)Tampa (SAD) / - , 2007

Skup
52nd Annual Conference on Magnetism and Magnetic Materials (MMM2007) Tampa (SAD)

Mjesto i datum
Tampa, SAD, 05-09.11.2007

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
spintronic; epitaxial thin films; PLD; magnetic properties

Sažetak
Iron-titanium oxide Fe_1.5Ti_0.5O_3-d obtained by substituting iron by titanium in the hematite structure alpha-Fe_2O_3 is proposed as a "spintronic" material beyond room-temperature: experimental results on bulk and thin films show Fe_2-xTi_xO_3-d to be both magnetic and semiconducting depending on Ti content. Although pure ilmenite FeTiO_3 and pure hematite alpha-Fe_2O_3 are antiferromagnets and insulators, ab-initio calculations predict a half-metallic behaviour for x=0.5. We present here the results obtained for Fe_1.5Ti_0.5O_3-d on epitaxial thin films, grown by pulsed laser deposition technique on c-sapphire at various oxygen pressures (P_O2). The magnetic properties were investigated by SQUID, the electrical properties using classical resistance and Hall effect, and optical absorption using UV-Vis-NIR spectrophotometer. For all oxygen pressures, epitaxial films are single phase. P_O2 appears to be critical parameter for both magnetic and semiconducting properties. High n-type conductivity is obtained at low P_O2 whereas high saturation magnetization M_S and remanence M_R stands for high P_O2 (see fig). Optical absorption data allow associating conduction with the formation of an impurity band.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekti:
119-1191458-1023 - Sustavi s prostornim i dimenzijskim ograničenjima: korelacije i spinski efekti (Hamzić, Amir, MZOS ) ( POIROT)

Ustanove:
Prirodoslovno-matematički fakultet, Zagreb

Profili:

Avatar Url Mario Basletić (autor)


Citiraj ovu publikaciju

Ndilimabaka, Herve; Dumont, Yves; Popova, E.; Basletić, Mario; Desfonds, P.; Bibes, Manuel; Godlewski, M.; Bouzehouane, Karim; Jomard, F.; Keller, N
Onfluence of oxygen stoichiometry on transport, optical and magnetic properties of the room-temperature ferrimagnetic oxide semiconductor Fe_1.5Ti_0.5O_3-δ // 52nd Annual Conference on Magnetism and Magnetic Materials (MMM2007)Tampa (SAD)
Tampa, SAD, 2007. (predavanje, međunarodna recenzija, sažetak, znanstveni)
Ndilimabaka, H., Dumont, Y., Popova, E., Basletić, M., Desfonds, P., Bibes, M., Godlewski, M., Bouzehouane, K., Jomard, F. & Keller, N. (2007) Onfluence of oxygen stoichiometry on transport, optical and magnetic properties of the room-temperature ferrimagnetic oxide semiconductor Fe_1.5Ti_0.5O_3-δ. U: 52nd Annual Conference on Magnetism and Magnetic Materials (MMM2007)Tampa (SAD).
@article{article, year = {2007}, keywords = {spintronic, epitaxial thin films, PLD, magnetic properties}, title = {Onfluence of oxygen stoichiometry on transport, optical and magnetic properties of the room-temperature ferrimagnetic oxide semiconductor Fe\_1.5Ti\_0.5O\_3- and \#948;}, keyword = {spintronic, epitaxial thin films, PLD, magnetic properties}, publisherplace = {Tampa, SAD} }
@article{article, year = {2007}, keywords = {spintronic, epitaxial thin films, PLD, magnetic properties}, title = {Onfluence of oxygen stoichiometry on transport, optical and magnetic properties of the room-temperature ferrimagnetic oxide semiconductor Fe\_1.5Ti\_0.5O\_3- and \#948;}, keyword = {spintronic, epitaxial thin films, PLD, magnetic properties}, publisherplace = {Tampa, SAD} }




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