Structural and magnetotransport properties of Co-doped La_0.5Sr_0.5TiO_3 epitaxial thin films (CROSBI ID 506581)
Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija
Podaci o odgovornosti
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
engleski
Structural and magnetotransport properties of Co-doped La_0.5Sr_0.5TiO_3 epitaxial thin films
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.
magnetic oxides; spintronics
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Podaci o prilogu
31-x.
2005.
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objavljeno
Podaci o matičnoj publikaciji
2nd Workshop on Prospects in Magnetic Oxides,
Fontevraud-l'Abbaye:
Podaci o skupu
2nd Workshop on Prospects in Magnetic Oxides,
poster
20.04.2005-22.04.2005
Fontevraud-l'Abbaye, Francuska