Naslov
Structural and magnetotransport properties of Co-doped La_0.5Sr_0.5TiO_3 epitaxial thin films

Autori
Ranchal, Rocio ; Basletić, Mario ; Herranz, Gervasi ; Bouzehouane, Karim ; Bibes, Manuel ; Guyard, S. ; Hamzić, Amir ; Pascanut, C. ; Berthet, P. ; Dragoe, N. ; Jacquet, E. ; Barthelemy, Agnes ; Contour, Jean-Pierre ; Fert, Albert

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

Izvornik
2nd Workshop on Prospects in Magnetic Oxides, / - Fontevraud-l'Abbaye, 2005

Skup
2nd Workshop on Prospects in Magnetic Oxides,

Mjesto i datum
Fontevraud-l'Abbaye, Francuska, 20.04.2005. - 22.04.2005

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
magnetic oxides; spintronics

Sažetak
The search for highly-spin polarized sources to be implemented in spintronic devices is an active field of research. One approach is to dope with magnetic elements a non-magnetic host showing the required transport properties. Here we report on the structural and magnetotransport properties of Co-doped (up to 3%) La_0.5Sr_0.5TiO_3 (LSTO(Co)) thin films grown by pulsed laser deposition. All samples appear to be ferromagnetic with T_c well above room temperature. X-ray diffraction and Auger spectroscopy do not show any traces of Co-clustering, suggesting that the ferromagnetism is intrinsic to the LSTO(Co) compound. We have performed an exhaustive study of the dependence of the magnetotransport properties on the oxygen pressure at deposition (P_O2) and on the Co-content. We have found that the samples are metallic, albeit the resistivity is remarkably dependent on the growth pressure.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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