Details

Autor(en) / Beteiligte

• QIAO, P. T
• ZHAO, Z. H
• ZHAO, Y. G
• ZHANG, X. P
• ZHANG, W. Y
• OGALE, S. B
• SHINDE, S. R
• VENKATESAN, T
• LOFLAND, S. E
• LANCI, C

Titel

Structural, electrical transport and magnetic properties of the Co-doped La0.5Sr0.5TiO3 at high temperatures

Ist Teil von

• Thin solid films, 2004-12, Vol.468 (1-2), p.8-11

Ort / Verlag

Lausanne: Elsevier Science

Erscheinungsjahr

2004

Quelle

Access via ScienceDirect (Elsevier)

Beschreibungen/Notizen

• The temperature dependence of the structural, electrical transport and magnetic properties of La0.5Sr0.5Ti0.93Co0.07O3+delta thin films above room temperature have been studied. It is found that the structure of La0.5Sr0.5Ti0.93Co0.07O3+delta samples changes at high temperatures. Correspondingly, the resistivity of the samples increases dramatically and the ferromagnetism of the samples disappears. We demonstrated that this transition is related to the oxygen absorption induced structural distortion, which results in the localization of carriers. This work indicates that carrier-mediated coupling between magnetic ions is essential for ferromagnetism in this system.